ferrox-health

ferrox-health is a skill for Claude Code from FerroxLabs/ferrox-factory. It costs 20 tokens per session (271 once invoked), scanned A, a copy of gsd-health, MIT.

A project-health checker that diagnoses problems in the .planning directory and offers repairs. It can also report how much of the current session's context window is being used.

In plain words
What is it for?
Use it to inspect planning state, receive repair options, or check whether the current context is healthy, nearing a warning level, or critical.
Why use it?
It helps identify broken planning setup or a session that is becoming too full for reliable reasoning.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: reads .claude/ paths; names the AskUserQuestion tool.

Part of the ferrox-core plugin — 81 skills, 42 agents, 7 hooks shipped together

Good fit Use it to inspect planning state, receive repair options, or check whether the current context is healthy, nearing a warning level, or critical.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/ferroxlabs/ferrox-factory/ferrox-health
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.

Any agent
npx skills add FerroxLabs/ferrox-factory --skill ferrox-health
Clone the repo
git clone --depth 1 https://github.com/FerroxLabs/ferrox-factory

Made for: Claude Code.

Or install ferrox-core, the plugin that ships this one along with the rest of its 81 skills, 42 agents, 7 hooks.

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 ferrox-health

README.md
[![agentmods](https://agentmods.dev/badge/skills/ferroxlabs/ferrox-factory/ferrox-health/github.svg)](https://agentmods.dev/skills/ferroxlabs/ferrox-factory/ferrox-health)
Your own site
<a href="https://agentmods.dev/skills/ferroxlabs/ferrox-factory/ferrox-health"><img src="https://agentmods.dev/badge/skills/ferroxlabs/ferrox-factory/ferrox-health/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 ferrox-health

Your own site · 80×15
<a href="https://agentmods.dev/skills/ferroxlabs/ferrox-factory/ferrox-health"><img src="https://agentmods.dev/badge/skills/ferroxlabs/ferrox-factory/ferrox-health.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 271 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 86% copy Near-identical to another mod 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 $0.00020 $0.00271
Opus 5 $0.00010 $0.00135
Sonnet 5 $0.00004 $0.00054
Haiku 4.5 $0.00002 $0.00027

Measured 8d ago against content hash e8e3fbace052, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

ferrox-health 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 8d 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.

Origin

This is a copy

86% identical to gsd-health — 11 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/ferrox-health/SKILL.md · 32 lines

What it actually says

--context runs an orthogonal check: the running session's context utilization. The workflow asks for the model's tokensUsed + contextWindow, calls ferrox-tools query validate.context, and renders one of three states:

Utilization State Action
< 60% healthy no action — context is comfortable
60% – 70% warning recommend /ferrox-thread to start fresh
≥ 70% critical reasoning quality may degrade past the fracture point

<execution_context> @~/.claude/ferrox-core/workflows/health.md </execution_context>

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. 8d ago First seen · 32 lines · 20 tokens per session scan A e8e3fbace052

Subscribe to this mod's changes

ferrox-health is a skill published in the GitHub repository FerroxLabs/ferrox-factory (23 stars, last pushed 1mo ago), licensed MIT. It adds 20 tokens to every session and 271 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 86% identical to gsd-health, differing in 11 lines, and is treated as a copy.

Related

Other skills, from other repositories

systemic-issue-triage

Trigger: new issue, bug report, triage, backlog, issue flood, community report, root cause, dead-end, blocked user. Attack issues by root class, never one-by-one; fixes must shrink the system, not grow it.

Gentleman-Programming/gentle-ai · 57 tokens

triage-issue

Intelligently triage bug reports and error messages by searching for duplicates in Jira and offering to create new issues or add comments to existing ones. When an agent needs to: (1) Triage a bug report or error message, (2) Check if an issue is a duplicate, (3) Find similar past issues, (4) Create a new bug ticket…

atlassian/atlassian-mcp-server · 116 tokens

bug-triage

Read all open bugs in production/qa/bugs/, re-evaluate priority vs. severity, assign to sprints, surface systemic trends, and produce a triage report. Run at sprint start or when the bug count grows enough to need re-prioritization.

Donchitos/Claude-Code-Game-Studios · 59 tokens

investigation

Create an investigation ticket + live-doc for sustained root-cause work (retros, bug archaeology, regression hunts).

me2resh/apexyard · 26 tokens

browse-flows

Browse Power Automate environments and flows interactively. Use when the user wants to browse, list, or explore their flows and environments.

microsoft/power-platform-skills · 31 tokens

operating-cadence

Designs the rhythm an organization runs on — which reviews happen weekly, monthly and quarterly, what each one decides, who owns the numbers presented, and how a signal at the front line reaches the people who can act on it. Use this to set up a management operating system, fix a meeting calendar that produces no…

cbrock84/headcount · 95 tokens