Borrowing it
Nothing to install: this file belongs to kckempf/yallmap. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/kckempf/yallmap/main/CLAUDE.mdgit clone --depth 1 https://github.com/kckempf/yallmapWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/instructions/kckempf/yallmap/claude-md)<a href="https://agentmods.dev/instructions/kckempf/yallmap/claude-md"><img src="https://agentmods.dev/badge/instructions/kckempf/yallmap/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/instructions/kckempf/yallmap/claude-md"><img src="https://agentmods.dev/badge/instructions/kckempf/yallmap/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What 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 5.1 | $0.00340 | $0.00340 |
| Opus 5.5 | $0.00136 | $0.00136 |
| Sonnet 5.5 | $0.00068 | $0.00068 |
| Haiku 4.5 | $0.00034 | $0.00034 |
Grade A, and why
yallmap 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 2mo ago.
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.
What it actually says
LLM Gateway Project Context
What this is
Anthropic-native LLM gateway in TypeScript. Primary client is Claude Code itself via ANTHROPIC_BASE_URL. Emits OTel traces to self-hosted Langfuse.
Architectural decisions already made
- Anthropic API first (not OpenAI), because Claude Code is the primary workload
- Routing policies as TypeScript functions, not YAML/CEL/config
- OTel gen_ai.* semantic conventions for trace emission
- Langfuse as the observability backend (self-hosted)
- CDK constructs for deployment (extends my existing cdk-dms-replication work)
v0.1 scope (this session)
- POST /v1/messages route only
- Transparent pass-through to api.anthropic.com
- Preserve all headers (x-api-key, anthropic-version, anthropic-beta)
- SSE streaming piped through — never buffer
- OTel span emission to Langfuse
Gotchas to design for
- Streaming: pipe upstream response directly, never .on('data') and collect
- Tool-use IDs: preserve every field, don't strip unknown ones
- Auth headers: don't rewrite x-api-key unless upstream expects different scheme
Differentiation hooks (later, not v0.1)
- Hybrid local/cloud routing (M5 Max Ollama + Anthropic)
- Code-based policies via TypeScript predicates
- CDK constructs for AWS deployment
What I'm NOT building
- OpenAI compatibility (defer)
- Routing logic (defer)
- Caching (defer)
- Anything beyond transparent proxy + observability for v0.1
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.
- 2mo ago First seen · 35 lines · 340 tokens per session scan A 4c910693a5c3
yallmap CLAUDE.md is an instructions file published in the GitHub repository kckempf/yallmap (2 stars, last pushed 2d ago), licensed MIT. It adds 340 tokens to every session, about $0.0014 per session on Opus 5.5. 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
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.