Borrowing it
Nothing to install: this file belongs to gaia-react/gaia. 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/gaia-react/gaia/main/.claude/commands/gaia-fitness.mdgit clone --depth 1 https://github.com/gaia-react/gaiaWrote 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/commands/gaia-react/gaia/gaia-fitness)<a href="https://agentmods.dev/commands/gaia-react/gaia/gaia-fitness"><img src="https://agentmods.dev/badge/commands/gaia-react/gaia/gaia-fitness/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/commands/gaia-react/gaia/gaia-fitness"><img src="https://agentmods.dev/badge/commands/gaia-react/gaia/gaia-fitness.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 | $0.00107 | $0.00421 |
| Opus 5.5 | $0.00043 | $0.00168 |
| Sonnet 5.5 | $0.00021 | $0.00084 |
| Haiku 4.5 | $0.00011 | $0.00042 |
Grade A, and why
gaia-fitness 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 10d 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.
What it actually says
Run the GAIA fitness workflow.
Pre-flight: Worktree check
This command grades this clone's Claude integration and heals it through a pull request of its own. It starts from the main checkout (the clone's primary working directory, on any branch) and isolates the heal right before its first write, through .claude/skills/gaia/references/isolation.md, so it never writes onto the branch the checkout holds. A linked worktree holds someone else's work, so it refuses to run from one. Run this first, before anything else; a non-zero exit is the refusal: relay it and stop.
. .gaia/scripts/main-only-lib.sh
gaia_refuse_if_worktree "/gaia-fitness" || exit 1
Anchor for the next pre-flight step: a check that must pass before this command starts goes here, after the worktree check and before the workflow dispatch line.
. .gaia/scripts/main-only-lib.sh
gaia_pull_gate "/gaia-fitness"
On a non-zero exit, read .claude/skills/update-gaia/references/pull-gate.md and follow it with /gaia-fitness, this run's original arguments and the exit code, before anything below creates a branch, worktree, claim or SPEC id.
Read .claude/skills/gaia/references/fitness.md from the project root and follow it exactly.
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.
- 10d ago Changed · -4 lines c4d07ec3eaee
- 11d ago Changed · +9 lines 0b8143f1f2b2
- 15d ago Changed · +74 tokens per session 4087037351f1
- 21d ago Changed · +1 lines · +1 tokens per session d0b940ff062f
- 2mo ago First seen · 22 lines · 32 tokens per session scan A 11e3c8ab5d12
gaia-fitness is a command published in the GitHub repository gaia-react/gaia (26 stars, last pushed 4d ago), licensed MIT. It adds 107 tokens to every session and 421 once invoked, about $0.0004 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.
Other commands, from other repositories
push-changes
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create-PR
Command "create-PR" from bartstc/vite-ts-react-template, covering create a pr against this branch: $arguments, follow these steps and remember.
plan-feature
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prototype-loop
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react-build
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web-design
Design and build a complete website or webapp from a project brief — end-to-end workflow from design to working React/Vite code.