fh-meta

fh-meta is a plugin for Claude Code from chrono-meta/forge-harness. Its manifest loads nothing; the 38 skills, 7 agents it bundles cost 4,109 tokens per session together, scanned A, original, MIT.

A Claude Code plugin that adds checks and session-start reminders for the project's own agent harness, shell scripts, branches, and public files.

In plain words
What is it for?
It helps maintain shared agent infrastructure, catch BSD/GNU or zsh/bash shell incompatibilities before commits, clarify branch-claim status, and flag missing package files or confidentiality-scan warnings.
Why use it?
It makes overdue maintenance and portability problems visible, and warns when checks may give a misleading picture of concurrent work or confidentiality.

Plugin for Claude Code

Written for Claude Code: SessionStart hook event. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

Good fit It helps maintain shared agent infrastructure, catch BSD/GNU or zsh/bash shell incompatibilities before commits, clarify branch-claim status, and flag missing package files or confidentiality-scan warnings.

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Install in Claude Code
/plugin marketplace add chrono-meta/forge-harness
/plugin install fh-meta
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.

Clone the repo
git clone --depth 1 https://github.com/chrono-meta/forge-harness

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.

agentmods badge for fh-meta

README.md
[![agentmods](https://agentmods.dev/badge/plugins/chrono-meta/forge-harness/fh-meta/github.svg)](https://agentmods.dev/plugins/chrono-meta/forge-harness/fh-meta)
Your own site
<a href="https://agentmods.dev/plugins/chrono-meta/forge-harness/fh-meta"><img src="https://agentmods.dev/badge/plugins/chrono-meta/forge-harness/fh-meta/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.

agentmods 80×15 button for fh-meta

Your own site · 80×15
<a href="https://agentmods.dev/plugins/chrono-meta/forge-harness/fh-meta"><img src="https://agentmods.dev/badge/plugins/chrono-meta/forge-harness/fh-meta.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 38 skills, 7 agents cost 4,109 tokens a session between them.
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.
Security

Grade A, and why

fh-meta 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 2d 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.

plugins/fh-meta/.claude-plugin/plugin.json · 37 lines

How it starts

The opening of the file, as written. The whole thing — 37 lines — stays where its author put it; the contents beside it link to each section on GitHub.

{
  "name": "fh-meta",
  "version": "3.28.0",
  "engines": {
    "claudeCode": ">=1.0.0"
  },
  "description": "New in 2.0.1: harness-doctor cadence promoted from prose to a SessionStart hook (30-day overdue check no longer silent); portability lint (BSD/GNU, zsh/bash pattern denylist) wired into pre-commit as the shell-layer sibling of the existing lints; branch_claim.sh gains an explicit warning that live-claim count is not a same-tree concurrent-edit count; the public-surface confidentiality scan's fail-open notice (operator pattern override absent) is now a hard-to-miss banner instead of a two-line aside; fh-gate.sh survives a missing package.json instead of dying under set -euo pipefail; identity ① (harness cluster) reclassified 🟢 under a redefined ⓐⓑⓒ bar (reuse is real and callable, FH did not grow to get it, sharpness is preserved via strictest-wins merge) — cross-harness adapters + relay_channel.sh --cap-args node-specific argument channel; §1-a-2's 6-axis verification canon synchronized across the file (a prior draft still said 4 in one place). New in 1.4.74: shipped documents no longer point at files the package omits. 35 such paths were measured on 2026-07-28 — CLAUDE.md instructed consumers to run templates/predelete_check.sh before a destructive op and the file did not ship. 20 more paths added; the 4 that remain absent are enumerated with a written reason each (per-environment registries and operator-private sync). Closing the set once is worth little because it regrows, so scripts/package_coverage_check.sh now fails selfcheck on any new occurrence, known-pair calibrated, and it caught itself on first wiring. New in 1.4.73: the mechanical floor now ships — templates/.git-hooks (pre-commit/pre-push) plus every script they actually invoke, their regression anchors, and the .claude/rules data they read. Until now the package shipped the prose that tells you to run the gates while omitting the gates, and 35 shipped-doc references pointed at files the tar

Read the full file on GitHub · 37 lines

Contents

What it installs

The manifest is a name and a version. 38 skills, 7 agents travel with it, and installing the plugin installs all of them — 4,109 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 2d ago Changed c051954e64f3
  2. 4d ago Changed af7d3669014e
  3. 6d ago Changed 515d34111f2c
  4. 7d ago Changed 824cd6acd4f5
  5. 8d ago Changed 977d3849c732
  6. 11d ago Changed 6790365786f5
  7. 20d ago Changed f9eab0ef3d36
  8. 21d ago Changed bf17e46e9e2d
  9. 22d ago Changed 297047476735
  10. 23d ago First seen · 37 lines scan A aa0b8a08c5f2

Subscribe to this mod's changes

fh-meta is a plugin published in the GitHub repository chrono-meta/forge-harness (30 stars, last pushed today), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.