Borrowing it
Nothing to install: this file belongs to SinanTufekci/agent-intern. 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/SinanTufekci/agent-intern/main/CLAUDE.mdgit clone --depth 1 https://github.com/SinanTufekci/agent-internWrote 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/sinantufekci/agent-intern/claude-md)<a href="https://agentmods.dev/instructions/sinantufekci/agent-intern/claude-md"><img src="https://agentmods.dev/badge/instructions/sinantufekci/agent-intern/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/sinantufekci/agent-intern/claude-md"><img src="https://agentmods.dev/badge/instructions/sinantufekci/agent-intern/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 | $0.01497 | $0.01497 |
| Opus 5.5 | $0.00599 | $0.00599 |
| Sonnet 5.5 | $0.00299 | $0.00299 |
| Haiku 4.5 | $0.00150 | $0.00150 |
Grade A, and why
agent-intern 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 14d 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.
How it starts
The opening of the file, as written. The whole thing — 91 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
agent-intern is a stdio MCP server (FastMCP, Python 3.10+) that runs other coding CLIs headless as
sub-agents: agy, codex, copilot, cursor-agent and opencode, plus grok, kimi and muse (experimental,
never answered by a real model). Users run it from PyPI as uvx agent-intern.
Commands
pip install -e ".[dev]" # what CI runs; a uv-made .venv has no pip: uv pip install -e ".[dev]"
ruff check . # CI gate
ruff format --check . # CI gate; tree is clean. Format only the files you touched
pytest -q # offline suite, ~930 tests in ~30 s, fake CLIs, no quota spent
pytest test_server.py::test_every_runtime_module_is_listed_in_py_modules # one test
python server.py # the server on stdio (the `agent-intern` script is the same)
python test_smoke.py # LIVE: real agy calls on your own quota; never pass it to pytest
A bare pytest collects the same files CI names in .github/workflows/ci.yml, because
conftest.py ignores test_smoke.py. CI lists them one by one, so a new test_*.py has to be
added there (and to the command in CONTRIBUTING.md) or CI never runs it.
Rules
Fetch before you start. Local main can lag origin/main: releases are sometimes cut from
another checkout (0.32.1 was). Run git fetch origin and git log --oneline main..origin/main
first, and branch from origin/main.
The server must keep working in both Claude Code and Antigravity. Both host the same stdio
server. plugin/ and .claude-plugin/ (the slash-command skills) are a Claude Code-only extra;
nothing the server does may depend on them. SERVER_INSTRUCTIONS and the tool descriptions speak
to "the host model" and must not assume Claude is the caller. Unit tests cannot show host
compatibility: a change to tool names, signatures, instructions or startup needs a live load in
both hosts before it ships.
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.
- 14d ago First seen · 91 lines · 1,497 tokens per session scan A feeab5fc0241
agent-intern CLAUDE.md is an instructions file published in the GitHub repository SinanTufekci/agent-intern (29 stars, last pushed 14d ago), licensed MIT. It adds 1,497 tokens to every session, about $0.0060 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 2026-10-16.
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Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.