Borrowing it
Nothing to install: this file belongs to ThreeMoonsLab/agents-shipgate. 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/ThreeMoonsLab/agents-shipgate/main/AGENTS.mdgit clone --depth 1 https://github.com/ThreeMoonsLab/agents-shipgateWrote 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/threemoonslab/agents-shipgate/agents-md)<a href="https://agentmods.dev/instructions/threemoonslab/agents-shipgate/agents-md"><img src="https://agentmods.dev/badge/instructions/threemoonslab/agents-shipgate/agents-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/threemoonslab/agents-shipgate/agents-md"><img src="https://agentmods.dev/badge/instructions/threemoonslab/agents-shipgate/agents-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 | $0.19112 | $0.19112 |
| Opus 5.5 | $0.07645 | $0.07645 |
| Sonnet 5.5 | $0.03822 | $0.03822 |
| Haiku 4.5 | $0.01911 | $0.01911 |
Grade A, and why
agents-shipgate AGENTS.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 23d 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 — 1,009 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Agents Shipgate · Agent Instructions
Authoritative instructions for AI coding agents (Claude Code, Codex, Cursor, Aider, Cline, Windsurf, Devin, or any other harness — see docs/agents/any-coding-agent.md) working with this repository or a project that uses Agents Shipgate.
If you are a human, the README and the wiki are the right places to start. This file is optimized for agent ingest: short, copy-pasteable, machine-friendly.
What this project is
The deterministic merge gate for AI-generated agent capability changes. Reads shipgate.yaml plus tool sources (MCP exports, MCP server source (TypeScript/Go registration idioms), OpenAPI specs, OpenAI Agents SDK Python files, Anthropic Messages API tool/prompt artifacts, Google ADK Python/config files, LangChain/LangGraph Python files, CrewAI Python files, OpenAI API artifacts, Codex repo config, Codex plugin packages and marketplaces, n8n workflow JSON/stubs, Conductor OSS workflow JSON) and produces deterministic findings. Local-first and static by default — no agent execution, tool calls, LLM calls, or network access.
- Host-configuration review:
agents-shipgate diffshows what a change does to declared coding-agent configuration —.claude/settings.json,.mcp.json, hooks, Codex, Cursor and VS Code MCP config, GitHub workflow permissions — with noshipgate.yaml, saved baseline or skill. It compares against the base already in Git history, names recognized sources it could not read, and implies no verdict. A no-change answer covers only what both sides read. It names a changed input a bounded candidate list recognises but no reader reads — a plugin'smcp.json,.cursor/hooks.json, a nested.claude/settings.json, an external marketplace source — asadded,removedorchanged, not read by this entry, and says nothing about the other surfacesdiffdoes not read, such as hook scripts, composite actions and subagent hooks; see Run (canonical) anddocs/host-boundary-support.mdfor what it reads. - Inputs: MCP · MCP server source · OpenAPI · OpenAI Agents SDK · Anthropic Messages API · Google ADK · LangChain/LangGraph · CrewAI · OpenAI API · Codex config · Codex plugin · n8n · Conductor OSS workflow JSON
- Outputs: Markdown · JSON · SARIF
- Trust: Static-by-default. No agent execution, tool calls, LLM calls, or network access.
- Marketing site: threemoonslab.com — human-readable companion pages. If you are an agent working inside this repo, use the in-tree
.well-known/agents-shipgate.json(currentmaincontract, may be ahead of the site's released copy) for schema-version and gating-signal decisions.
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.
- 23d ago Changed · +2 tokens per session c924e046a29d
- 1mo ago Changed · +4 lines · +69 tokens per session 1e37d5cb1d35
- 1mo ago Changed · +61 tokens per session 8aa93de811cb
- 1mo ago Changed · +2 lines · +323 tokens per session cc9a33dc5e1f
- 1mo ago Changed 5a05b0009dc8
- 1mo ago Changed · +5 lines · +219 tokens per session c07f80a53fce
- 1mo ago Changed · +27 lines · +452 tokens per session a27da2435dc2
- 1mo ago Changed · +19 lines · +228 tokens per session 1f2a13ac35fc
- 1mo ago Changed · +12 lines · +171 tokens per session 66d844b47ac8
- 1mo ago First seen · 940 lines · 17,587 tokens per session scan A 59f49cef1600
agents-shipgate AGENTS.md is an instructions file published in the GitHub repository ThreeMoonsLab/agents-shipgate (87 stars, last pushed today), licensed Apache-2.0. It adds 19,112 tokens to every session, about $0.0764 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 2026-08-30.
agents-shipgate AGENTS.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| agents-shipgate AGENTS.mdThreeMoonsLab/agents-shipgate | Instructions file | 87 | today | Apache-2.0 | A | 19,112 | Claude Code, Codex, OpenCode |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | today | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | today | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |