Borrowing it
Nothing to install: this file belongs to joachimBrindeau/domain-mcp. 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/joachimBrindeau/domain-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/joachimBrindeau/domain-mcpWrote 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/joachimbrindeau/domain-mcp/claude-md)<a href="https://agentmods.dev/instructions/joachimbrindeau/domain-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/joachimbrindeau/domain-mcp/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/joachimbrindeau/domain-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/joachimbrindeau/domain-mcp/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 | $0.00371 | $0.00371 |
| Opus 5 | $0.00186 | $0.00186 |
| Sonnet 5 | $0.00074 | $0.00074 |
| Haiku 4.5 | $0.00037 | $0.00037 |
Grade A, and why
domain-mcp 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 9d 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
CLAUDE.md
This is a pnpm workspace monorepo. Two packages live under packages/:
packages/domain-mcp/— thedomain-mcpnpm package: a stdio MCP server wrapping the Dynadot registrar API. Seepackages/domain-mcp/CLAUDE.mdfor architecture, commands, and conventions.packages/domain-agent-kit/— the portable Agent Plugins v1 workflow package built ondomain-mcp. Canonical behavior lives inskills/domain-management/; the Claude manifest, MCP declaration, and destructive-operation hook are thin compatibility adapters.
When editing code
- Changes to the MCP server: work inside
packages/domain-mcp/. Usepnpm --filter domain-mcp run <script>orcd packages/domain-mcp && pnpm <script>. - Changes to the plugin: work inside
packages/domain-agent-kit/. Runpnpm --filter domain-agent-kit testandhermes plugins doctor packages/domain-agent-kit --ciafter changes.
Root commands
pnpm install # install all workspace deps
pnpm build # build domain-mcp
pnpm test # test domain-mcp
pnpm typecheck # tsc --noEmit domain-mcp
pnpm check # biome across repo
pnpm check:fix # biome --write across repo
Publishing
Only packages/domain-mcp/ publishes to npm. Tag pushes on main trigger the
publish job in .github/workflows/ci.yml. The plugin publishes via the Claude
Code marketplace (manifest at .claude-plugin/marketplace.json).
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.
- 9d ago First seen · 37 lines · 371 tokens per session scan A c644df8961fd
domain-mcp CLAUDE.md is an instructions file published in the GitHub repository joachimBrindeau/domain-mcp (12 stars, last pushed 3d ago), licensed MIT. It adds 371 tokens to every session, about $0.0019 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 2026-08-30.
Other instructions, from other repositories
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AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
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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.