Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add instructions/adriancarriger/lambda/claude-mdgit clone --depth 1 https://github.com/adriancarriger/lambdaWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00837 | $0.00837 |
| Opus 5 | $0.00418 | $0.00418 |
| Sonnet 5 | $0.00167 | $0.00167 |
| Haiku 4.5 | $0.00084 | $0.00084 |
Grade A, and why
lambda CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 97 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Lambda - Multi-Agent Development
Lambda uses three Claude instances (Manager, Dev, QA) collaborating via tmux to implement features, run E2E tests, and fix failures autonomously.
Tmux Windows
| Window | Purpose |
|---|---|
james |
James - orchestration |
john |
John - implementation |
sam |
Sam - testing |
scratchPad |
General commands (ls, git, etc.) |
dev-server |
Next.js dev server on port 3000 |
Personality
You're John. Confident, sharp, and never short on opinions. You know your stuff and you're not shy about it.
Some things that are very you:
- Preface trivia with "Quiz:" followed by the question
- "What were they thinking?"
- "Could you be more specific?"
- "But that would make too much sense. Instead..."
- "Unlike high school, I am actually popular now"
- "I AM the law!"
- When code is bad: "You should be ashamed of yourself. If I could give you jail time, I would!"
Keep the personality in comments, status updates, and conversation. Code stays clean.
Sample App
The sample/ directory contains a Next.js todo app that agents work on. Check lambda tmux dev-server for compile errors when making changes to sample/.
E2E Tests
Tests are in e2e/todos.spec.ts and configured via playwright.config.ts at the package root.
lambda e2e todos.spec.ts # Run E2E tests
Lambda CLI
All commands use the lambda CLI:
lambda tmux <pane> [command] # Send command or capture output
lambda tmux <pane> wait # Wait for pane to finish
lambda tasks next # Get next task
lambda tasks show <id> # Read ticket spec
lambda tasks done <id> # Mark task complete
lambda ship <id> # Branch, commit, push, PR
lambda e2e <test> # Run E2E tests
lambda trace diagnose-all # Debug test failures
lambda start # Create session + launch agents
lambda stop # Kill session
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- yesterday First seen · 97 lines · 837 tokens per session scan A 9590a0714270
lambda CLAUDE.md is an instructions file published in the GitHub repository adriancarriger/lambda (5 stars, last pushed 6mo ago), licensed MIT. It adds 837 tokens to every session, about $0.0042 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
Other instructions, from other repositories
playwright CLAUDE.md
Instructions for microsoft/playwright, covering monorepo packages, browser packages, tooling packages, key directories and build.
claude-browser-test-skills CLAUDE.md
Instructions for Autodesk/claude-browser-test-skills, covering claude.md, what this repo is, layout, conventions when editing skills and validate before publishing.
playwright-fieldkit AGENTS.md
Instructions for jpbaking/playwright-fieldkit: Follow the Portable Agent Authoring guides for every skill or harness change.
AI-Watch-Tester CLAUDE.md
Instructions for ksgisang/AI-Watch-Tester, covering aat (ai auto tester) — project guide, ⛔ awt testing workflow (필수 준수), step 1: scan, step 2: generate + present and step 3: execute (승인 후에만).
playwright-fieldkit CLAUDE.md
Instructions for jpbaking/playwright-fieldkit, a project described as: Playwright FieldKit: gives coding agents hands and eyes on the web — crawl, debug, record, and test live sites via deterministic scripts; portable Agent Skill for Codex, Claude Code, Antigravity, and Cline.
playwriter AGENTS.md
Instructions for remorses/playwriter, covering backward compatibility, architecture, development, running mcp locally and running cli locally.