What is apigen CLAUDE.md?

A Claude Code instruction file for an HTTP API generator written for Go projects. It points to AGENTS.md for the project’s shared rules and procedures.

Use it to provide Claude Code with the project context, build commands, tests, and coding conventions stored in AGENTS.md.

It avoids maintaining separate copies of project guidance for Claude Code and other agents.

How gemyago/apigen configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to gemyago/apigen. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/gemyago/apigen/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/gemyago/apigen

Made for: Claude Code.

Wrote 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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/gemyago/apigen/claude-md/github.svg)](https://agentmods.dev/instructions/gemyago/apigen/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/gemyago/apigen/claude-md"><img src="https://agentmods.dev/badge/instructions/gemyago/apigen/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/gemyago/apigen/claude-md"><img src="https://agentmods.dev/badge/instructions/gemyago/apigen/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 51 This file is loaded in full into every session.

When invoked 51 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

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	$0.00051	$0.00051
Opus 5.5	$0.00020	$0.00020
Sonnet 5.5	$0.00010	$0.00010
Haiku 4.5	$0.00005	$0.00005

Measured 1mo ago against content hash f93d7f888aac, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

apigen 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 1mo 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.

CLAUDE.md · 8 lines

What it actually says

Claude Code Instructions

This file redirects to the main AGENTS.md file to maintain a single source of truth.

@AGENTS.md

All project-specific context, build commands, testing procedures, and coding conventions are defined in AGENTS.md above.

Changes

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.

1mo ago First seen · 8 lines · 51 tokens per session scan A f93d7f888aac

Subscribe to this mod's changes

apigen CLAUDE.md is an instructions file published in the GitHub repository gemyago/apigen (6 stars, last pushed 11mo ago), licensed Apache-2.0. It adds 51 tokens to every session, about $0.0002 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 2026-10-02.

Backend and APIs Building agents Code Generation api go http openapi

apigen CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
apigen CLAUDE.mdgemyago/apigen	Instructions file	6	11mo ago	Apache-2.0	A	51	Claude Code
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	yesterday	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

apigen: Instructions file for Claude Code