agents-md-edit

agents-md-edit is a skill for Claude Code, Codex from harshanandak/forge. It costs 73 tokens per session (805 once invoked), scanned A, original, MIT.

A guide for editing AGENTS.md, a file that gives coding agents and maintainers instructions. It explains which parts are sent to Forge users and which parts are kept for the repository maintainers.

In plain words
What is it for?
Use it before changing workflow rules, stage tables, glossary entries, or maintainer notes in AGENTS.md. It does not apply to CLAUDE.md or generated instruction copies.
Why use it?
It prevents instructions from being shown to the wrong audience or being lost when the file is regenerated. It also helps avoid putting repository-specific details into user-facing guidance.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions CLAUDE.md; mentions AGENTS.md.

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/harshanandak/forge/agents-md-edit
Any agent
npx skills add harshanandak/forge --skill agents-md-edit
Clone the repo
git clone --depth 1 https://github.com/harshanandak/forge

Made for: Claude Code, Codex.

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.

agentmods badge for agents-md-edit

README.md
[![agentmods](https://agentmods.dev/badge/skills/harshanandak/forge/agents-md-edit.svg)](https://agentmods.dev/skills/harshanandak/forge/agents-md-edit)
Your own site
<a href="https://agentmods.dev/skills/harshanandak/forge/agents-md-edit"><img src="https://agentmods.dev/badge/skills/harshanandak/forge/agents-md-edit.svg" alt="Measured on agentmods" height="20"></a>
Per session 73 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 805 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00073 $0.00805
Opus 5 $0.00036 $0.00402
Sonnet 5 $0.00015 $0.00161
Haiku 4.5 $0.00007 $0.00081

Measured 5d ago against content hash 3ed17ab84819, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

agents-md-edit 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 5d 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.

.forge/contributor-skills/agents-md-edit/SKILL.md · 65 lines

How it starts

The opening of the file, as written. The whole thing — 65 lines — stays where its author put it; the contents beside it link to each section on GitHub.

agents-md-edit

AGENTS.md has two audiences in one file. Put your sentence in the wrong half and it either ships to every Forge user or disappears at the next regenerate.

The two blocks

  • <!-- FORGE:START --><!-- FORGE:END -->the product contract. It is rendered by Forge and it ships to users. It must read as if written for someone who has never seen this repository: no scripts/, no lefthook.yml, no .agents/skills, no machine paths, no maintainer trivia. Never hand-edit it to record something you learned while building Forge.
  • <!-- USER:START --><!-- USER:END -->ours. The maintainer contract: what we never compromise on, the glossary, the hit-every-surface checklist, the ways to hurt yourself, the dev runbook.

The renderer preserves the USER block across regeneration. smartMergeAgentsMd extracts it by regex and re-emits it, so its content survives forge setup regardless of where you put it — but it is re-emitted above the FORGE block, so do not depend on its position. [verified 2026-08-13 — lib/smart-merge.js]

Before you write a line

  1. Which audience? If the sentence names a repo-local path, a script, a hook file, or a test, it belongs in the USER block or in .forge/contributor-skills/. Product-facing text names commands, not files.
  2. What is the evidence? Every rule carries a provenance tag — [Forge #N ×n] for a mined correction, [verified DATE] for something read out of running code, [imported] for a borrowed default with no local incident. Untagged rules get deleted at the next re-mine. [§5.9-8]
  3. Does it beat the default? Delete any sentence a competent agent would have followed anyway. Prompt the behaviour you want; naming the banned behaviour drags it into context.
  4. Is it short? If a rule needs paragraphs to defend, it is the wrong rule.

Committing it

AGENTS.md is protected state. Read protected-commit before you stage it — as of 2026-08-13 the gate has no writer that can authorize an AGENTS.md commit, including a USER-block-only edit. Never reach for --no-verify.

Read the full file on GitHub · 65 lines

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.

  1. 5d ago First seen · 65 lines · 73 tokens per session scan A 3ed17ab84819

Subscribe to this mod's changes

agents-md-edit is a skill published in the GitHub repository harshanandak/forge (4 stars, last pushed 5d ago), licensed MIT. It adds 73 tokens to every session and 805 once invoked, about $0.0004 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 2026-08-31.

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