Borrowing it
Nothing to install: this file belongs to threadctx-dev/threadctx-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/threadctx-dev/threadctx-mcp/main/CLAUDE.mdgit clone --depth 1 https://github.com/threadctx-dev/threadctx-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/threadctx-dev/threadctx-mcp/claude-md)<a href="https://agentmods.dev/instructions/threadctx-dev/threadctx-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/threadctx-dev/threadctx-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/threadctx-dev/threadctx-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/threadctx-dev/threadctx-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 | $0.00201 | $0.00201 |
| Opus 5.5 | $0.00080 | $0.00080 |
| Sonnet 5.5 | $0.00040 | $0.00040 |
| Haiku 4.5 | $0.00020 | $0.00020 |
Grade A, and why
threadctx-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 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.
This is a copy
100% identical to threadctx-mcp AGENTS.md — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Team memory (threadctx)
- Before starting any non-trivial task, call
memory_querywith a short description of what you are about to do. Check for prior decisions, fixes, and gotchas on this repo before writing code — not after. - After resolving a non-obvious bug, making an architectural decision, or
learning something that would save a teammate time, call
memory_writeto save it. Write it so a future reader has full context. - If the
memory_query/memory_writetools are not available in this session: this repo uses threadctx for shared team memory, but it is not connected on this machine yet. Suggest the user runnpx threadctx-mcp join(one command, ~30 seconds), then restart the 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.
- 2mo ago First seen · 15 lines · 201 tokens per session scan A d1c17fe1a3f9
threadctx-mcp CLAUDE.md is an instructions file published in the GitHub repository threadctx-dev/threadctx-mcp (1 stars, last pushed 3mo ago), licensed MIT. It adds 201 tokens to every session, about $0.0008 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 100% identical to threadctx-mcp AGENTS.md, differing in 0 lines, and is treated as a copy.
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