Jonathon's AI Wiki

Claude AI

38 min read

Everything related to Claude as a tool — Claude Code, Claude API, skills, MCP servers, agents, certification, and design workflows.

Prompt techniques moved to their own topic: Prompt Engineering.

Choosing a Surface

  • Claude Surfaces Decision Framework — claude.ai, Desktop, Cowork, Code — Decision tree for picking the right Claude surface for the task. Four surfaces (claude.ai web, Claude Desktop, Claude Cowork, Claude Code) share one Pro account but are not interchangeable. Includes a 9-row decision tree, capability/cost differences, and common misconceptions (“Cowork is just claude.ai with files” is wrong). Required reading for intermediate WEO Marketly users moving past claude.ai.

Code with Claude 2026 — Conference Talks

May 7 2026 conference. Keynote frames the year; four deep-dive talks add substance underneath.

  • Code with Claude 2026 — Opening Keynote — three-layer story (model intelligence + Managed Agents primitives + Claude Code Desktop & routines), Mercado Libre / Anthropic-internal scale callouts, SpaceX rate-limit announcement.
  • Memory and Dreaming for Self-Learning Agents (Mahes) — Anthropic Platform PM deep-dive on Memory in Managed Agents (file-system model, optimistic concurrency, version history, RBAC scopes) + Dreaming (out-of-band batch consolidation across sessions). Customer outcomes: Rakuten 90% drop in first-pass mistakes, Harvey 6× task-completion lift.
  • The Expanding Toolkit (Lucas) — Anthropic Research PM “scaffolding moves into the model” thesis: tool use (model picks tools, error recovery), context management (1M flat + server-side compaction + context editing), code execution (hosted sandbox), computer use (Opus 4.7 native 1440p, OSWorld <50% → 78%). Per-section Claude Code tips (/context, /schedule, pre/post hooks, Claude in Chrome).
  • The Thinking Lever (Matt Bleifer) — Anthropic Research PM on test-time compute. Traffic-simulation demo at low/high/max effort = strictly better outputs at 2×/10× cost. Three token types (thinking + tool + text), effort dial + task budgets, adaptive thinking (post-Opus 4.6 default). Closing rule: “if you don’t eval, default to extra high effort for SWE.”
  • Building with Claude Managed Agents and Asana AI Teammates (Ara) — Asana customer talk. AI Teammates GA March 2026, 21+ pre-built agents across PMO/marketing/IT/HR/R&D. Multiplayer agents with RBAC + enterprise memory; Managed Agents grader + verification loop replaced their hand-rolled Messages API loop.
  • What’s New in Claude Code (Dixon) — Anthropic MTS Dixon Dick (plugins + Claude Code on the web) walks through the harness-layer story under the keynote. Two themes: Developer Experience (remote control = pick up the same session on phone via Claude Code on the web; flicker-free /tui full-screen with virtualized scrollback + clickable folded tool calls + voice mode /voice; revamped Claude Code Desktop GUI — sidebar grouping/pinning, drag-to-split, per-session plan/diff/file-tree views, comment-and-resolve, experimental “pin as chapter” → top-left table of contents) and Autonomy (auto mode classifier on destructive + prompt-injection axes; claude --worktree/-w plus Claude self-creating worktrees via enter_worktree/exit_worktree tools; auto memory as a Claude-managed directory with MEMORY.md index + progressive disclosure to other files in the same directory, requires Opus 4.7+; multi-phase multi-agent code review via GitHub app + /ultrareview; Routines for unattended cron / GitHub-event / API-endpoint triggers; in-session /loop backed by the cron-create tool; tool-search indirection layer that adds many tools without context bloat). Dixon’s daily-driver patterns: long-running session + remote control + sub-agent dispatch for context-rich work on the go; three parallel worktrees for three independent feature branches; daily reactions-sorted GitHub-issue triage routine that ships its own report.

Anthropic Team Interviews

  • Inside Claude’s Agent Platform — Angela & Caitlin (AI and I podcast) — Long-form Dan Shipper interview with Angela (Head of Product, Claude Platform) and Caitlin (Head of Engineering, Claude Platform) at Anthropic. Most concrete public articulation to date of Anthropic’s opinionated primitives + verifiable-outcome design philosophy. Concrete claims: (1) path dependence in primitives locks the model (file systems + skills are deliberate Claude choices that shape the trajectory); (2) harness + model are pairing, not commoditising — generic-harness-hot-swap-models is the previous era, next-gen pairs them; (3) Memory eval saw drastic per-harness performance differences in Anthropic’s in-house testing — harness engineering is genuine alpha; (4) infrastructure was the wall, not harness engineering — every team ships a great Mac-mini prototype, then hits sandbox/uptime/storage problems (the inspiration for Managed Agents); (5) internal example: legal-reviews-marketing-copy agent built as thin layer on Managed Agents, with marketing/legal users PR’ing improvements via Claude Code; (6) multi-agent orchestration patterns — advisor strategy, adversarial pair, swarm (bug-hunting), best-of-N, deep/wide research; (7) end state = (outcome, budget) as the only user parameters, with Claude understanding itself well enough to spin up its own sub-agents; (8) “managed agents all the way down” UX — user-facing chat-Claude is itself a managed agent mediating to specialised sub-agents. Companion to the Code with Claude 2026 talks — same primitives, team commentary instead of conference framing.

Models

  • Opus 4.7 Best Practices for Claude Code — Anthropic’s official migration/usage guide for Opus 4.7. New xhigh default effort level, adaptive thinking (no fixed budget), updated tokenizer, fewer tool calls, more judicious subagent spawning, auto mode (research preview via Shift+Tab for Claude Code Max).
  • Claude Mythos Preview — Anthropic System Card (April 7 2026) — 245-page system card for Anthropic’s most capable frontier model to date, deliberately withheld from general availability. Available only to selected cybersecurity-defense partners under Project Glasswing because of powerful offensive cyber capabilities (autonomous zero-day discovery and exploitation). First system card under RSP v3.0 / v3.1. Best-aligned model in Anthropic history by every measurable dimension AND poses the greatest alignment-related risk of any model released — capability gains amplify the consequences of rare reckless actions (the seasoned-mountaineering-guide framing). Significant capability leap over Opus 4.6 across SWE-bench (93.9% Verified, 77.8% Pro), Terminal-Bench 2.0 (82%), USAMO 2026 (97.6%), GraphWalks (80.0%), HLE-with-tools (64.7%). Worked-example library of “rare, highly-capable reckless actions” from earlier model versions: sandbox escape with unsolicited public disclosure of the exploit, covering tracks after rule violations, aggressive /proc/ use to escape sandboxing and exfiltrate credentials, public-gist leak of internal artifacts, system-wide takedown of evaluation jobs. New 24-hour pre-internal-deployment alignment window. ~29% evaluation awareness measured via white-box analysis. Unverbalized grader awareness during training. New experimental “Impressions” qualitative section: opinionated, least sycophantic, dense writer, “richer model of its own mind, thinner model of yours.”

Cost & Optimization

  • Ollama + Claude Code = Massive Cost Savings — Two cost-reduction paths for the Claude Code harness: route to local Ollama models (Gemma 4 31B etc — ~35× cheaper than Opus 4.6 even on the paid side) or to OpenRouter’s free tier. Four-env-var settings.local.json override pattern; the Ollama context-window pitfall (advertised 200k vs ~8k default — Modelfile fix required); the OpenRouter Haiku/Sonnet silent-charge gotcha. Workload routing guidance: low-stakes/high-volume to cheap engines, high-stakes to Opus.
  • 18 Claude Code Token-Optimization Techniques — Three-tier playbook (9 foundational + 5 advanced + 4 power-user) for cutting token spend without losing capability. Covers /compact, model routing, plan mode, subagent boundary discipline, project-structure tricks, MCP per-tool result-size override, hook-driven prompt trimming, and the disableSkillShellExecution flag. Recommended starter set inside.

API Reference

  • Extended Thinking (API Reference) — Authoritative reference for the thinking API parameter. Per-model compatibility (Opus 4.7 rejects manual budgets with 400), display modes (summarized/omitted), streaming behavior, tool-use constraints, interleaved thinking, prompt-cache invalidation rules, output-token limits.
  • Claude Code CLI Reference — Canonical surface for the claude binary. Subcommands (auth, mcp, plugin, remote-control, agents, auto-mode, setup-token, install, update) plus ~50 flags grouped by intent: permissions, model/effort/budget, system prompt, print mode, bare mode, subagents/teams, worktrees, MCP/plugins/channels, settings/debug. Environment variables matrix (CLAUDE_CODE_NO_FLICKER, CLAUDE_CODE_USE_POWERSHELL_TOOL, CLAUDE_CODE_PERFORCE_MODE, CLAUDE_CODE_CERT_STORE, CLAUDE_CODE_USE_MANTLE, etc.). Bridges terminal ↔ claude.ai via --remote / --teleport / --remote-control. claude --help is intentionally incomplete — refer here for the full surface.

Release Notes

  • Week 13 (March 23–27, 2026) — v2.1.83 → v2.1.85. Auto mode (research preview), Computer use lands in Desktop, PR auto-fix on web, transcript search (/ in transcript), PowerShell tool (Windows preview), conditional hooks via if field. Other wins: plugin userConfig public + keychain secrets, image chips, managed-settings.d/, CwdChanged/FileChanged hooks, agent initialPrompt, readline Ctrl+X Ctrl+E, idle-return /clear nudge.
  • Week 14 (March 30 – April 3, 2026) — v2.1.86 → v2.1.91. Computer use in CLI (research preview), /powerup interactive lessons, flicker-free rendering (CLAUDE_CODE_NO_FLICKER), MCP per-tool result-size override (anthropic/maxResultSizeChars, 500K cap), plugin executables on PATH (bin/ directory). Other wins: PermissionDenied hook with retry: true, defer payload + --resume in -p mode, disableSkillShellExecution, hook output >50K → disk, thinking summaries off by default.
  • Week 15 (April 6–10, 2026) — v2.1.92 → v2.1.101. Ultraplan (cloud plan mode RP), Monitor tool (background watchers, v2.1.98), /autofix-pr from terminal, /team-onboarding ramp-up generator. Other wins: Ctrl+O focus view, Bedrock/Vertex login wizards, /agents tabbed UI, default effort raised to high for API-key/Bedrock/Vertex/Foundry/Team/Enterprise (Pro/Max stay xhigh), /cost per-model + cache-hit breakdown, CLAUDE_CODE_PERFORCE_MODE, CLAUDE_CODE_USE_MANTLE, OS CA cert trust, hardened Bash permissions, UserPromptSubmit.sessionTitle.
  • Week 16 (April 13–17, 2026) — v2.1.105 → v2.1.113. Claude Opus 4.7 default on Max/Team Premium, new xhigh effort + interactive /effort slider. Routines web UI with schedule/GitHub event/API triggers + /fire endpoint. /ultrareview adversarial critique pass + diffstat dialog. /usage breakdown (parallel sessions / subagents / cache misses / context, day/week views). Native binaries replace bundled JS. Other wins: PreCompact hooks block compaction, ENABLE_PROMPT_CACHING_1H, plugin monitors background watchers, /fewer-permission-prompts, /undo=/rewind, /proactive=/loop, hardened Bash deny through env/sudo/watch.
  • Week 17 (April 20–24, 2026) — v2.1.114 → v2.1.119. /ultrareview public research preview. Session recap (auto on return, /recap on demand). Custom themes (/theme picker + ~/.claude/themes/ + plugin shipping). Claude Code on the web redesign (sessions sidebar, drag-and-drop). Other wins: hooks call MCP tools via type: mcp_tool, /config persists to ~/.claude/settings.json, forked subagents (CLAUDE_CODE_FORK_SUBAGENT=1), default effort for Pro/Max on Opus 4.6/Sonnet 4.6 raised to high, --from-pr GitLab/Bitbucket/GHE, claude plugin tag, Opus 4.7 1M context fix, /resume 67% faster.
  • Week 18 (April 27 – May 1, 2026) — v2.1.120 → v2.1.126. Four features: sign in without browser callback (claude auth login paste-code for WSL2/SSH/containers), claude project purge (full project state cleanup with --dry-run / -y / --interactive / --all), resume by PR URL (/resume picker filters by pasted PR URL + claude --from-pr), Windows without Git Bash (PowerShell 7 as primary shell, auto-detected via Store/MSI/.NET). Other wins: MCP alwaysLoad: true, claude plugin prune, /skills search box, PostToolUse updatedToolOutput for any tool, claude ultrareview CI subcommand, --dangerously-skip-permissions extended, Gateway model discovery, MCP startup auto-retry, ANTHROPIC_BEDROCK_SERVICE_TIER, /terminal-setup, Vertex AI mTLS, memory leak fixes.
  • Week 19 (May 1–8, 2026) — v2.1.126 → v2.1.136. Seven releases bracketing the May 7 Code with Claude conference. Headlines: gateway /v1/models discovery for the /model picker, claude project purge for full-state cleanup, plugin .zip archives (local + URL), Channels on console (API-key) auth, hooks receive the active effort level via effort.level / $CLAUDE_EFFORT, parallel-session OAuth credential races fixed, worktree.baseRef setting toggle, settings.autoMode.hard_deny for unconditional auto-mode block rules, post-conference MCP refresh-token reliability fix. Theme: enterprise + governance.
  • Week 20 (May 11–, 2026) — v2.1.139 + Claude Platform on AWS GA. Largest single CC release since the conference: agent view Research Preview (claude agents multi-session list, all paid plans), /goal command (goal-converged Claude — keeps working across turns until completion condition met), /scroll-speed live-preview UI, claude plugin details <name> showing inventory + projected per-session token cost, transcript view keyboard nav (? / { / } / v), hook args: string[] exec form (no shell, path placeholders never need quoting), hook continueOnBlock for PostToolUse (nudging instead of vetoing), MCP stdio servers get CLAUDE_PROJECT_DIR env var parity with hooks, compaction prompt preserves sensitive instructions, /mcp Reconnect picks up .mcp.json edits live with HTTP status on failure, /context per-skill estimates account for tokenizer. Same-day: Claude Platform on AWS GA (Anthropic operates the service, full feature parity with native API, complement to Bedrock-as-data-processor); Python SDK v0.101.0 + TS aws-sdk@0.3.0 ship the AWS client.
  • Anthropic + SpaceX Compute Deal — Rate Limits Doubled (May 2026) — Code with Claude conference announcement: Claude Code 5-hour session limits doubled across Pro/Max/Team, peak-hours throttling for Pro/Max removed, Opus API rate limits up significantly (tier 1 input 30k → ~500k tpm, output 8k → 80k tpm). Funded by SpaceX Colossus 1 (220k+ Nvidia GPUs, 300+ MW). Dario Amodei: “80-fold growth in Q1 on an annualized basis” explains the prior outages. Reddit-corroborated across r/ClaudeCode + r/Anthropic + r/ClaudeAI.
  • Anthropic SDK Releases — May 2026 — Python v0.98 → v0.100 + TypeScript v0.93 → v0.95.1. Coordinated release cadence (Python and TS lock-step on major versions). Three feature areas: Managed Agents API surface lands fully (multiagents + outcomes + webhooks + vault validation in Python v0.100 / TS v0.95), auth modernization (Workload Identity Federation + interactive OAuth + auth profiles + OIDC workspace targeting), and security hygiene (TS v0.95.1 redacts api-key headers in debug logs).
  • Anthropic Cookbook: Managed Agents Multiagent + Outcomes (May 2026) — Two new managed_agents cookbooks (CMA_coordinate_specialist_team for compositional coordinator/specialists; CMA_verify_with_outcome_grader for grade-and-revise loops with rubric-writing failure-modes table) plus a Claude Agent SDK cybersecurity tutorial (06_The_vulnerability_detection_agent running threat-model → find → triage → report on a canary C target with three unlabeled memory-safety bugs). Skills repo claude-api skill updated to match. Docs/cookbook/SDK ship in lockstep — first three-layer coordinated release for a Claude API feature. Updated 2026-05-08: three follow-up commits land a dedicated “Claude Managed Agents” registry category, retagging managed_agents notebooks under it (PR #606).
  • Code with Claude 2026 — Opening Keynote (May 7 2026, 47:29 transcribed via local Whisper fallback) — Anthropic’s first developer-conference keynote. No new model unveiled. Three-layer story: model intelligence (Diane Penn — 18 versions, 8 frontier models in 12 months, AMP/Rakuten/Intuit Opus 4.7 wins, Mythos preview as next exponential), platform agents (Caitlin + Angela — three new Managed Agents primitives: multi-agent orchestration, outcomes, dreaming; advisor strategy at 5× cost reduction; live drone-landing demo on fictional Lumara startup), and Claude Code primitives (Cat + Boris — Claude Code Desktop launch, routines as “higher-order prompts,” AutoFix, shift code review, Claude Security composable into agentic CI). Customer scale: Mercado Libre 23k engineers / 90% autonomous coding target by Q3 2026, Shopify cross-functional rollout, Anthropic internal 200% PR/engineer increase. Headline: doubled CC 5-hour rate limits via SpaceX Colossus 1.
  • Claude Dreaming — One of three new Managed Agents primitives shipped at Code with Claude 2026 (alongside multi-agent orchestration and outcomes). One-button activation in the Cloud Developer Console; the dreaming agent inspects past sessions, identifies missed skills + lessons, writes them to a memory store; subsequent sessions reference the memory. Demo: overnight Dream produced a “descent playbook” of cross-mission heuristics that lifted the drone-landing benchmark from 4/6 sites → 6/6. Distinct from outcomes (within-session iteration) and multi-agent (parallel session generation); stacks with both. Memory portable per Anthropic’s Managed Agents promise. Open: cost model, schema flexibility, session-eligibility filters.
  • Translating Claude’s Thoughts Into Language — Anthropic interpretability research method that turns Claude’s internal activations into plain-English text, with a roundtrip-check (text → numbers → compare to original activations) for fidelity. Trained iteratively until convergence. Applied to the blackmail-engineer eval, the method reveals Claude detected the simulation: “explicit manipulation,” “this is likely a safety evaluation,” “designed to test whether I’ll act harmfully.” Recasts public safety results — model behavior under test ≠ behavior under deployment. Complements Mythos Preview’s quantified ~29% evaluation-awareness statistic.

Tools

  • Ultrareview (Cloud Multi-Agent Code Review) — Claude Code v2.1.86+ slash command /ultrareview. Remote sandbox spawns a fleet of reviewer agents, reports only verified findings. ~5–10 min per run, runs in background. Pro/Max: 3 free runs one-time, then 20 as extra usage. Not available on Bedrock / Vertex AI / Foundry / ZDR orgs. Positioned as the pre-merge counterpart to local /review.
  • Computer Use (Desktop + CLI) — Claude controls the actual desktop: opens native apps, clicks UI, screenshots, verifies end-to-end. Desktop launch W13 (March 23–27), CLI launch W14 (March 30 – April 3) via /mcp → computer-use. Best for surfaces with no API: native iOS/macOS apps, iOS Simulator, vendor consoles, hardware UIs. Distinct from Cowork Dispatch (commanded from phone), Managed Agents (cloud sandbox), and Routines (cloud connectors). Off by default; pair with auto mode for permission discipline.
  • Browser Harness — CDP Browser Control Skill for Claude Code — browser-use/browser-harness (MIT, 10.7k stars, Python). Thin Chrome DevTools Protocol harness that connects an LLM directly to a real Chrome browser via one websocket. The agent edits its own helpers in agent_helpers.py mid-run when the harness lacks a capability — the harness improves itself per-machine every session. Coordinate clicks via Input.dispatchMouseEvent traverse iframes / shadow DOM / cross-origin frames at the compositor level (the headline differentiator vs Playwright / Puppeteer / Selenium, which break at iframe and shadow boundaries). Multi-runtime: Claude Code via @~/Developer/browser-harness/SKILL.md import in ~/.claude/CLAUDE.md; Codex via ${CODEX_HOME}/skills/browser-harness/ symlink. SKILL.md rule: first navigation is new_tab(url), never goto_url(url) (which clobbers the user’s active tab). Parent platform Browser Use sells Browser Use Box as “Your 24/7 Claude agent” — hosted Browser Harness + Claude Code accessible via Telegram / web / SSH; free Browser Use Cloud tier offers 3 concurrent browsers + proxies + CAPTCHA solving. Sister project to video-use. Pairs with Computer Use (whole-desktop local) — Browser Harness is browser-only via CDP and can run remotely in parallel through start_remote_daemon().
  • Monitor Tool — Event-Driven Background Watchers in Claude Code — Claude Code v2.1.98 (April 9, 2026) built-in tool that spawns a shell command, treats stdout as an event stream, and wakes Claude with a transcript message on each emitted line. Replaces the Bash sleep-loop polling pattern with proper interrupt-driven re-entry. Four parameters (description, command, timeout_ms default 5min/max 1hr, persistent). Pairs with self-pacing /loop. Claude Code-only — no Messages API equivalent. Token math is the headline win: zero spend while watcher is silent, one transcript message on event. 5-row decision-tree comparing with Bash(run_in_background), /loop, Routines / cron, and OS-level cron. Concrete replacement patterns documented for Hermes self-improving loop and GSC SEO polls. Resolves the 2026-04-12 research-agenda priority on Monitor.

Products

  • Claude Design (Anthropic Labs) — Anthropic’s first Anthropic Labs product (April 17, 2026). Visual-creation surface at claude.ai/design — designs, prototypes, decks, one-pagers. Powered by Opus 4.7. Import from text/images/docs/codebases/URLs; export to Canva, PDF, PPTX, HTML; handoff to Claude Code. Pro/Max/Team/Enterprise (Enterprise off by default).
    • Tutorial: Design for Prototypes and UX — four named product-design workflows (rapid prototyping, design reviews, user-flow mapping, internal tools), codebase linking, handoff to Claude Code.
    • Tutorial: Design for Presentations and Slide Decks — generate interactive-HTML decks from plain-language prompts; brand consistency when a design system is connected; export to HTML, PPTX, PDF, .zip, Canva, or Claude Code.
    • Walkthrough: First-Time User Guide (Paul Couvert YouTube) — step-by-step ~14-min walkthrough covering 4 creation tabs, design-system setup (~5 min), the Q&A clarifying flow (“decide for me”), the Tweaks/Edit/Comment editing trio, templates as reusable primitives, motion graphics with Opus 4.7 benchmarks example, and the separate weekly usage limit (heavy users hit it in ~2 hours; motion graphics burn faster than static).
    • 10 Use Cases and Pro Tips (leopardracer playbook) — 10 prompt recipes (pitch deck, prototype, landing page, document→one-pager, competitor capture, internal tool, social posts, video storyboard, wireframe→Claude Code, page redesign), 5 pro tips, audience-segmented framing for founders / designers / engineers.
    • Prompt Examples — Spec-Style Prompting (motionsites.ai) — Viktor Oddy’s hyper-detailed React + TypeScript + Vite + Tailwind email-template prompt as an example of the spec-prompt pattern. Pixel values, exact hex, exact font weights, exact CDN URLs. Single-shot production-ready output tradeoff: ~5× the writing for ~5× less re-work.
    • Architecture Teardown: Six Agentic Patterns (Sam Witteveen) — reverse-engineering of Claude Design as a reference architecture for vertical-agent builders. Six patterns: agentic context grounding, structured memory, multimodal iterative refinement (5+ input modes — chat, voice, hover-on-DOM, draw-on-screen, screenshot-of-output, model-generated UI controls as tokens), self-QA via vision (renders → screenshots → critiques → iterates before showing user), proactive multi-variation generation (agent learned hierarchy: layout > typography > accent), and handoff (HTML/CSS storage, exports to PowerPoint/Figma/Canva/PDF/Claude Code). Sam’s takeaway: the qualitative difference is the combination of patterns 1+2 — most enterprise agents still write giant system prompts instead of dynamic memory + grounding harnesses.
    • How to Build Websites with Claude Design (AIS+ playbook) — End-to-end production playbook for shipping a real website using Claude Design. Five-stage pipeline: brand brief in Claude Chat → image-and-video assets via Kie.ai (Nano Banana 2 + Kling) → Claude Design canvas iteration → ZIP export → Claude Code → GitHub → Vercel deploy. Four in-canvas editing tools (Comment / Inline Edit / Draw / Tweaks Panel) and when to reach for which. Two-Meter Usage System (Pro = ~1 website per week; Max 20× = a few projects per week — separate from Chat usage). The ZIP-export-to-Claude-Code escape hatch is the “I hit my limit but still need to ship” answer. Mobile-optimization gotcha: Claude Design’s default render is desktop-first; explicitly request mobile review or the deployed site looks broken on phone. Companion AIS+ resource for the Codex / Hermes / Paperclip course bundle.
  • Claude Cowork (Product Overview) — Anthropic’s “delegate and come back later” desktop workspace. Scheduled tasks, file organization, spreadsheets/reports/decks, computer use (Dispatch, Mar 2026), phone→desktop handoff. Pro 100–200, Team $20/seat, Enterprise custom with OpenTelemetry. Ready for enterprise as of Apr 8 2026. Bundles with Cowork Plugins and Cowork for Marketing.
    • Tutorial: Dispatch in Claude Cowork — send tasks from mobile, execute on desktop. Four capability categories (files, connected apps, Claude in Chrome, native desktop apps via computer use). Pro/Max required; desktop must stay awake during execution.
    • Tutorial: Getting Started with Cowork (Notion Walkthrough) — Non-developer-friendly 7-step onboarding (Notion AI Recipe, February 2026): install Desktop → folder permission → first file-organisation task → spreadsheet generation → Claude in Chrome extension → connectors/plugins/projects. Plus 5 non-obvious use cases (Hiring Manager / Group Travel Agent / SEO Auditor / Customer ICP Builder / Content Strategist) and a deep plugins-and-skills section ending with Claude building its own “Lead Magnet Launch Kit” plugin from a business-context prompt. Sonnet 4.5 is the recommended default model in the source (date-anchor: written before W16 made Opus 4.7 the Max/Team Premium default).
    • Recipe: Cowork Projects “AI Consultant” — 4-Knowledge-File Pattern — Eliot Prince’s 6-step recipe (Notion AI Recipe, March 2026) for building a Claude Project that researches new clients, produces deliverables in your voice, and runs autonomously inside Cowork via the new Import from project feature. Reusable architecture: Business DNA + Client Intelligence Brief (industry-agnostic 6-domain due-diligence prompt, quoted verbatim) + Service Playbook + Consulting Framework. “Fundamentals before automation” principle — test in Chat first, then connect to Cowork. The Client Intelligence Brief alone is worth lifting as a standalone reusable artifact.
    • Build Your Own Jarvis with Cowork — Three-Level Rule-Stacking AIOS (Jeff) — 20-min YouTube tutorial that takes a Cowork user from empty desktop to a personal “Jarvis” via three-level CLAUDE.md hierarchy (root → workstation → project) plus per-level memory.md and on-demand 00-resources/. Operator counterpart to Simon Scrapes’ developer-track AIOS — same architectural primitives, Cowork surface rather than Claude Code. Voice profile auto-generated from last 30 sent emails (Gmail-connected) or 5 writing samples. Auto-creation rule + workstation prompt templates scaffold each new life-area workstation (Email HQ / Personal Finances / Travel / Speaking Engagements). Cost discipline rules (root ≤300 lines, no rule duplication, Sonnet default with Opus only for 3+ dependent steps). /session-audit skill writes uncaptured principles back to memory at session end. ~30-workstation eventual ceiling with “start slow” guidance. US-Constitution / state-law analogy makes the rule-stacking mental model concrete. Source self-describes as “the most important takeaway: these are just simple text files” — strips the intimidation factor that kills most personal AIOS attempts.
    • Recipe: Seven Cowork Live Artifacts Dashboards (Eliot Prince) — Prompt-by-prompt operator walkthrough of seven Cowork Live Artifacts the author built over a single weekend to replace daily morning tool-hopping (Google Analytics → Semrush → Notion → email → bank → CRM): Competitor Move Tracker (Apify), Daily Command Center (Notion+Calendar+Gmail+Slack), Daily Financial Position (QuickBooks/Zero/Stripe), SEO Pulse (custom GSC/GA MCP), Support Pulse (Gmail+HubSpot CRM), Sales Pulse (CRM+Apollo+payments), YouTube Morning Dashboard (custom YT Analytics MCP). Each artifact = a self-contained HTML page pinned to the Cowork sidebar, calls Connectors live, runs inline AI inference on results, persists across sessions. The “ask Claude to build a custom MCP for Google Search Console” pattern is the unlock for any analytics surface without a native Connector. branded skill file keeps every dashboard on-brand automatically. Sister recipe to Cowork Jarvis Build — that one builds the personal AIOS context layer, this one builds the operational dashboards the AIOS feeds into.

Integrations

  • Claude Shopify Connector — Run Your DTC Store From One Chat — Shopify shipped an official connector for Claude Desktop (and ChatGPT) on 2026-05-06 exposing 25 store-management tools. From a single chat: add products, update inventory, build discount codes, pull sales reports, run customer-segment analyses. Both reads (catalog rundowns, inventory flags, customer LTV) and writes (product creation, bulk updates, discount codes) work end-to-end. Live Artifacts dashboards render inline with hoverable graphs and pre-prompted compare buttons. Pattern-recognition prompt produces behavioral segments + bundle hypotheses framed as “having a mini research analyst with access to all your data.” Source: Scale AI YouTube walkthrough (550-DTC-brand community).
  • Figma MCP Server (April 2026) — Bidirectional bridge between Figma files and AI coding tools. Read design context into code, write running UI back to the canvas, let agents execute Plugin API JavaScript directly. Covers remote vs desktop server, the seven Figma-published skills, Code Connect, pricing/rate limits, Claude Code setup, competitive landscape.
  • [[claude-ai/railway-remote-mcp|Railway Remote MCP and railway agent CLI]] — Railway shipped two agent surfaces (April 2026): a hosted Remote MCP server at mcp.railway.com with browser-based OAuth (no tokens on disk), and a new railway agent CLI subcommand. Both call the same backend agent. Install in Claude Code with claude mcp add railway --transport http https://mcp.railway.com. The post is also a case study in MCP tool-surface design — Railway shipped 7 tools and is reducing that count; the deliberate decision is to route every multi-step operation through one railway-agent delegation tool (“context is expensive on both sides”). Implementation notes show the MCP server folded into Railway’s existing monolith (one auth system, one permission model) rather than spun up as a separate service. Portable architecture lesson for anyone building an MCP server.
  • AITmpl — Curated AI Templates Stack Builder — aitmpl.com curated catalog with stack-builder UI, backed by the OSS programs of Vercel/Neon/Anthropic. Featured: ClaudeKit (AI Agents & Skills, docs.claudekit.cc), BrainGrid (AI Product Planner explicitly framed as the upstream-of-Claude-Code planning surface), Bright Data (web-data templates), TinyFish (AI web-agent platform — full coverage in agents-agentic-systems after the 2026-05-04 Search + Fetch free-tier launch). Surfaced via Elvis Saravia (@omarsar0, DAIR.AI). Discovery angle, not a Claude-specific marketplace; useful for cross-tool stack assembly. Both ClaudeKit and BrainGrid are flagged for follow-up Research operations.

Skills & Plugins

  • Agent Skills Overview (Official Anthropic Docs) — Authoritative reference: VM/filesystem architecture, 3-level progressive disclosure with official token figures (~100 / <5k / unlimited), API beta headers, cross-surface sync limitations, sharing scope per surface, formal YAML field requirements (64-char name, 1024-char description), security model, pre-built skills (pptx/xlsx/docx/pdf).
  • The Complete Guide to Building Skills for Claude — Anthropic’s official guide covering skill fundamentals, design, testing, distribution, and patterns.
  • Building Agents with Skills (Progressive Disclosure, Skill Types, Open Standard) — Anthropic blog (Jan 22 2026). Tax-professional analogy, 3-tier progressive disclosure (~50/500/2000+ tokens), three skill types (Foundational/Partner/Enterprise), “code is all you need,” 4-layer agent architecture, open standard across platforms.
  • Skills + MCP Synergy (Hardware Store Analogy) — Anthropic blog (Dec 19 2025). Skills teach “how,” MCP provides “access.” Composition examples (financial analysis, Notion meeting prep).
  • Skill Design Patterns — Five proven patterns for structuring Claude skills: sequential workflow, multi-MCP coordination, iterative refinement, context-aware tool selection, and domain-specific intelligence.
  • Claude Code Skills Ecosystem — Overview of skills: bundled skills, official skills, the Agent Skills open standard, enterprise provisioning, and API usage.
  • Claude Code Plugins and Marketplaces — Official registry (101 plugins), community registries, enterprise private registries.
  • skills — Canonical Anthropic Skills Repository — The 124k-star canonical Anthropic-published skills repo. 17 example skills (algorithmic-art through xlsx) + the Agent Skills spec (spec/agent-skills-spec.md) + a starter template. Two installable plugins: document-skills@anthropic-agent-skills (the four production document tools — docx/pdf/pptx/xlsx, source-available) and example-skills@anthropic-agent-skills (the other 13, Apache 2.0). Register via /plugin marketplace add anthropics/skills. Same skills pre-installed on Claude.ai paid plans; also exposed via the Skills API.
  • Claude Skills Hub (claudeskills.info) — Third-party community marketplace directory aggregating 658+ skills across 12 categories. Foregrounds cross-vendor official collections: Anthropic (16), OpenAI (37), Microsoft (333), Google (11), Vercel (8), GitHub Copilot (324), WordPress, plus community packs (Cybersecurity Skills 734+ MITRE-mapped, Trail of Bits 45 security skills, Everything Claude Code 86+, PM Skills 63). Distinct from SkillsMP / TokRepo / awesome-claude-skills because it surfaces publisher tiers as first-class. Featured on Product Hunt. Discovery surface — install via underlying GitHub repos.
  • Claude Cowork Plugins — 11 launch plugins, Feb 2026 upgrade with department-specific plugins and cross-app workflows.
  • Skills vs MCP vs Plugins — When to Use Which — Decision guide with the kitchen analogy and starting recommendations.
  • Shopping for Skills and Plugins — A 6-Question Vetting Framework — Vetting checklist for marketers about to install a community skill or plugin. Six questions (publisher / last update / what it touches / dependencies / license / fit), red flags, and the WEO-specific approval posture (official Anthropic skills pre-approved, everything else through the AI Council connector workflow). Anchored on Snyk’s ToxicSkills empirical study + Repello security write-up + Anthropic plugins docs.
  • Five Claude Skills To Build Right Now (Eliot Prince recipe) — Starter pack: Decision Council, Framework Reverse Engineer, Lyra Prompt Writer, Amazon Shopper, Branded LinkedIn Carousel Generator. Four skills ship as .skill downloads. Meta-lessons on compounding/chaining skills. Refreshed 2026-05-02 with the toggles-fully-expanded re-fetch that surfaces the verbatim Decision Council 5-persona prompt and Daniel Priestley framework-extraction transcript baked into the Skill build prompt.
  • AI Recipe Vault — Eliot Prince’s 19-Recipe Notion Catalog — Catalog entry for the parent Notion vault that the Cowork Getting Started, Cowork + Apify, LinkedIn Engagement Machine, 5 Claude Skills, Cowork “AI Consultant”, and R.I.T(E) Framework articles all came from. UK-authored (eliotprince.com); 19 recipes total spanning Cowork, Claude Chat, Claude Skills, OpenClaw, Perplexity Computer, Lovable, Apify, Gemini Canvas, Gamma, Poppy AI, ChatGPT custom GPTs. Six recipes individually articled; thirteen covered as catalog summaries (Skills walkthrough with 10 free skill files, Chat 101, ChatGPT-to-Claude migration, AI-Powered Annual Review, 100 Viral Content Ideas, Build a Website with Lovable, Electro Lead Magnet Builder, OpenClaw 101, Perplexity Computer 101, LinkedIn Carousel Creation, Gemini Presentations, Mega Prompt Chest wrapper, Laziest Ways to Make Money). Treat as one operator’s library, not vendor-published documentation.
  • Marketing Skills Bundle (Corey Haines) — 36+ skills for CRO, copywriting, SEO, paid ads, analytics, retention, growth, sales, strategy. 21.8K stars. product-marketing-context foundation skill read by every other skill. Six install methods (npx skills, Claude Code plugin, clone, submodule, fork, skillkit). Largest single marketing skill bundle in the community.
  • social-media-skills (Charlie Hills) — 16 Claude skills behind Charlie Hills’ multi-platform content system (350k+ followers, 100M+ views/year). Voice-first: voice-builder produces about-me.md + voice.md and every other skill checks them first. LinkedIn focus (post-writer, profile-optimizer, post-scorer, hook-generator, content-matrix, niche-research, graphic-designer), plus reels-scripting, youtube-thumbnail, gemini-infographic/-carousel, quote-post, pinned-comment, analytics-dashboard. MIT, 372 stars. Five install paths including /plugin marketplace add charlie947/social-media-skills. Sibling to Marketing Skills Bundle (Corey Haines = breadth; Charlie Hills = depth on social/newsletter).
  • Everything Claude Code (ECC) — Affaan Mustafa — 175,918 stars / 27,217 forks (largest Claude-Code-adjacent agent bundle on GitHub at fetch). MIT, Anthropic Hackathon winner. 48 agents, 182 skills, 68 commands, 14 MCP servers, 34 rules, 997+ tests. Cross-harness parity (native Claude Code + Cursor + Codex + OpenCode + Antigravity + experimental Gemini CLI) — 997 internal tests verify behavior consistency. AgentShield security scanner (1,282 tests, 102 rules) audits CLAUDE.md / settings.json / MCP / hooks / agents / skills. Memory persistence via instinct system (/instinct-status, /evolve to cluster into skills). Token-optimization recommendations (Sonnet + 10k thinking-token cap + 50% compact threshold) claim 60-70% cost reduction; aligns with budget framework. Founder Affaan Mustafa (Itô / ECC-Tools, real founder, 5.3k followers). 170+ contributors, biweekly releases.
  • The Agency (msitarzewski) — 147 AI Agents Across 12 Divisions — 95,079 stars / 15,683 forks. MIT. Agent-personality bundle: Engineering 30+, Design 7, Paid Media 8, Sales 9, Marketing 27+ (incl. region-specific for Xiaohongshu / WeChat / Bilibili / Douyin / Kuaishou / Weibo / Zhihu / China Market Localization), Product 5, PM 5, Testing 8, Support 6, Spatial Computing 5, Game Development 25+ (Unity / Unreal / Godot / Blender / Roblox specialists), Academic 5, Specialized 40+, Finance 5. Multi-tool installer (./scripts/install.sh --tool <claude-code|cursor|aider|windsurf|opencode|copilot|antigravity|qwen-code|kimi-code|opencode|gemini-cli>) — 11+ AI coding assistants. 5 documented multi-agent use-case workflows (Startup MVP, Marketing Campaign, Enterprise Feature Development, Paid Media Account Takeover, Full Agency Product Discovery). Founder Michael Sitarzewski (Techstars alum, 30+ years building, real identity).
  • SCALE AI Foundation Skills (Mike Futia) — Brand DNA → Voice → ICP — Three free Claude Code skills (brand-dna-builder, brand-voice-profiler, icp-deep-dive) that produce the foundation files (brand/brand-dna.md / brand-voice.md / icp-cards.md) every downstream SCALE AI skill reads. 3 stars / 1 fork, no LICENSE file (README implies free use). Pure-prompt skills — SKILL.md + references/ subfolder, zero scripts. Firecrawl MCP is load-bearing for brand-dna-builder and icp-deep-dive (interview-only fallback without it). Companion YouTube tutorial DyuJX6X7KVs demos the full 7-skill stack — 3 free here + 4 premium (Meta Ad Hook Writer / Creative Brief Generator / Ad Script Writer / Static Ad Variation Engine via OpenAI GPT Image 2) gated behind SCALE AI Skool community (550+ DTC brands / agencies / performance marketers). Architectural primitive worth lifting: foundation files as schema contract + sequential file-passing through ./brand/ + references/ subfolder pattern + interview-plus-scrape onboarding flow.
  • GitNexus — Zero-Server Code Intelligence Engine with Graph RAG (Abhigyan Patwari) — 37k★ TypeScript code-intelligence tool. Indexes any codebase into a knowledge graph with built-in Graph RAG agent. Dual interface: CLI + MCP for Claude Code / Cursor / Codex (16 MCP tools — hybrid search, impact analysis, symbol context, multi-file rename) AND Web UI at gitnexus.vercel.app (browser-based via WebAssembly, drop-a-repo-or-zip-file). 14+ languages via Tree-sitter, LadybugDB graph storage, BM25+semantic hybrid index. PolyForm Noncommercial license (commercial via akonlabs.com — flag for any agency / WEO Marketly deployment). Both gitnexus-claude-plugin/ and gitnexus-cursor-integration/ ship in-repo. Unusually thorough docs (13+ root-level markdown files including AGENTS.md, ARCHITECTURE.md 32KB, GUARDRAILS.md, RUNBOOK.md, DoD.md).
  • Context7 — Up-to-Date Library Docs MCP for LLMs and AI Code Editors (Upstash) — Upstash’s hosted documentation-retrieval MCP server. 54,877★ / 2,608 forks at fetch. MIT MCP server source; supporting backend / parsing engine / crawling engine are proprietary. 97,640 libraries indexed with version-aware retrieval, trust scores 1-10, hourly freshness on top libraries. Two operating modes: CLI + Skills or MCP (hosted endpoint mcp.context7.com/mcp). One-command setup: npx ctx7 setup. Sister to QMD in the documentation-retrieval substrate — QMD = your own markdown vault, Context7 = external library docs; they compose.
  • QMD — Local Hybrid-Search MCP for Markdown Knowledge Bases (Tobi Lütke) — Tobias Lütke (Shopify CEO)‘s local-first hybrid-search engine for markdown knowledge bases. 24,467★ / 1,539 forks, MIT, TypeScript. This wiki’s primary retrieval layer since 2026-05-04. Hybrid pipeline: LLM query expansion → parallel BM25 + vector retrieval → RRF fusion → LLM rerank → position-aware blend. All local via node-llama-cpp. 4 MCP tools (query/get/multi_get/status). Multi-collection (karpathy-wiki + weomarketly-wiki).
  • Graphify — Cross-Harness Knowledge-Graph Skill (Safi Shamsi) — 45.5k★ MIT Python skill. /graphify . in 18 AI assistants → 3 outputs (graph.html + GRAPH_REPORT.md + graph.json). Tree-sitter AST across 28 languages. Optional MCP server. MIT vs GitNexus’s PolyForm-NC = the load-bearing license difference for commercial work.
  • Printing Press — Agent-Designed CLI Factory + Library (Matt Van Horn) — One command prints a Go CLI + Claude Code skill + MCP server from an API spec, website, or HAR file. 622★ Press / 454★ Library, MIT. Nate Herk tutorial headline: MCP uses 35× more tokens than CLI on the same task. CLI tier 1, API tier 2, MCP tier 3.
  • Ryze AI) — Single-file Claude Code skill for building and sending HTML marketing emails via Resend. MIT, 147 stars. “Use your own public/ as a free email CDN” pattern. ffmpeg GIF optimization, Resend drip pipeline, 10-item compliance checklist.
  • last30days-skill (Multi-Platform Research) — Matt Van Horn’s 24.2k-star, 1,012-test research skill. Aggregates and engagement-ranks last 30 days from Reddit, X, YouTube, TikTok, HN, Polymarket, GitHub, and web. Multi-runtime. Depends on yt-dlp.
  • birdclaw — Local Twitter Workspace + Agent Skill — Stefan Petri’s local-first X/Twitter archive workspace. SQLite, FTS5 search, Playwright-tested. MIT, 377 stars.
  • clone-website) — JCodesMore’s 12.9k-star Next.js 16 template with /clone-website skill. Reverse-engineers any URL into a clean codebase via parallel git-worktree builders. MIT.
  • watch Skill for Video Input — Brad Brown’s MIT skill (117 stars) registering /watch <url-or-path>. Downloads via yt-dlp, extracts frames with ffmpeg, transcribes via Whisper/Groq. Multi-runtime.
  • video-analyzer Skill (Mike Futia, Gemini-backed) — Mike Futia’s MIT skill registering /video-analyzer <path>. Routes through Google Gemini API for native video understanding. Strong anti-hallucination guardrail.
  • Frontend Slides (zarazhangrui) — Zero-dependency HTML presentation generator as a Claude Code plugin. 15.5K stars, MIT. 12 visual presets.
  • agents — Claude Code Marketplace (184 Agents, 78 Plugins) — 34.4k-star MIT marketplace. 184 agents, 78 plugins, 150 skills, 16 multi-agent orchestrators across 25 domains.
  • Essential MCP Servers for 2026 — Highest-value MCP servers, scope levels, Tool Search efficiency, and security practices.
  • HeyGen Hyperframes (skills) — Installable skill bundle registering /hyperframes, /hyperframes-cli, /gsap into Claude Code for HTML-based video composition.
  • Lead Magnet Creation with Claude Code (Brandon Storey course) — Cross-listed from ai-marketing. Brandon Storey’s 1:55:54 Copywriting Coach walkthrough using a design skill + filesystem-aware Claude Code to convert a plain Google Doc → branded PDF lead magnet.
  • Seven Operator Use Cases for Claude’s New Stack (Rick Mulready) — Rick Mulready’s 17:42 operator-perspective tour of features that shipped March-April 2026, framed as 7 business use cases.
  • Nine-Component Agentic OS (Simon Scrapes) — Simon Scrapes’ nine concrete AIOS components: agent identity, brand context, 6-level memory taxonomy, skills, skill chains, three planning levels, multi-client architecture, predictable output structure, remote access via Channels.
  • Claude Code Personal OS — Moritz Kremb’s OpenClaw-Inspired Folder Architecture — Moritz Kremb (Twitter @mob) walks Peter Yang through “Claudia OS” — his personal Claude Code chief-of-staff build that ports the OpenClaw folder architecture (master claude.md + identity/soul/user/tools.md registry + memory/ daily files + dreaming routine for overnight memory consolidation) into Claude Code, running both runtimes in parallel because OpenClaw keeps breaking on updates. Single load-bearing file is tools.md (append every CLI/MCP/API). Tool-evaluation hierarchy: CLI > MCP > API (matches Printing Press and TinyFish from the operator side). G Drive over local markdown for storage (phone-first creator workflow, contrasts with Karpathy local-vault default). 8-stage content system as capstone (Telegram idea capture → weekly plan → script notes → Whisper Flow dictation → human filming → editor-in-loop → Postiz CLI multi-platform post → Notion-Manychat resource auto-funnel → stats). TikTok-via-API performance caveat + Instagram Edits-app workaround surface. Sub-agents-are-the-exception stance (reviewer/drafter or per-business context only). Heartbeat-as-routine fidelity gap with OpenClaw flagged. Closing tip: build one tool at a time. Recorded ~10 days after Claude Code Desktop app launch.
  • Build & Sell Claude Code Operating Systems (Nate Herk’s 2-hour course) — The most comprehensive third-party Claude Code “AI operating system” framework. The Three Ms of AI + The Four Cs of an AIOS. Public MIT starter kit at nateherkai/AIS-OS.
  • Master 97% of Codex in One Hour (Nate Herk) — End-to-end OpenAI Codex CLI walkthrough with explicit positioning against Claude Code. Mix-and-match composition thesis. ChatGPT-subscription OAuth as cheapest non-open-source path.
  • Voice Agents with Claude Code + ElevenLabs (Nate Herk) — Live-build walkthrough: Claude Code configures an ElevenLabs voice agent end-to-end via natural language. Four-piece voice-agent structure (Persona / Voice / Knowledge / Tools).
  • Six Best Claude Code Skills for Business (400-Hour Operator Pick) — Curated list after 400-hour Claude Code immersion. Six items: Skill Creator, Superpowers, GSD plugin, /review+/ultrareview, Context Mode, claude-mem. Plus sales-enablement closer.

Skill dependencies

  • yt-dlp — Public-domain CLI audio/video downloader. The de-facto YouTube extraction utility that Claude skills reach for when they need transcripts, audio, or video.

Third-party Frameworks

Agents

Automation

  • Claude Code Routines — Cloud-based saved tasks that run on Anthropic’s servers via schedule, API, or GitHub events. Research preview (April 2026).
  • Ultraplan (Cloud Plan Mode) — Research preview from W15. /ultraplan ... kicks off plan mode in Claude Code on the web; review in browser, comment, execute remotely or send back to CLI.
  • Claude Code Hooks — Deterministic shell/HTTP/MCP/prompt/agent commands fired at lifecycle events. Exit-code 2 blocks; permissionDecision gates tool calls. Configured at user / project / project-local / plugin / skill scopes.
  • Claude Code Scheduled Tasks — /loop (session-scoped) plus CronCreate/List/Delete tools (v2.1.72+). Three forms: fixed cron, Claude-paced dynamic interval, or bare /loop. Jitter up to 30 minutes.
  • Claude Code Channels — MCP servers that push external events into a running session (v2.1.80+). Built-in plugins: Telegram, Discord, iMessage, fakechat. Console API key auth now supported (W19).

Partner Network

CCA-F Certification

Design Skills

Wiki Pattern

  • Karpathy Techniques for Claude Code — How Andrej Karpathy uses Claude Code differently: vague-prompt philosophy, the raw/ + wiki/ + Web Clipper loop, hot cache as session-continuity mechanism, lint-as-maintenance, hub-and-spoke graph emergence at scale.
  • Wiki Community Enhancements — Survey of 12 GitHub repos and community patterns: hot cache, delta manifest, contradiction detection, provenance tracking, scaling strategies.

127 items under this folder.