FixThis: Skill for Claude Code

.agents/skills/fixthis-repository-change/SKILL.md

fixthis-repository-change is a skill for Claude Code, Codex from beyondwin/FixThis. It costs 43 tokens per session (303 once invoked), scanned A, original, MIT.

A set of instructions for making and checking changes in the FixThis source repository, including source code, tests, documentation, command-line tools, and Gradle plugins.

In plain words
What is it for?
Use it when implementing, diagnosing, reviewing, or verifying work inside the FixThis codebase.
Why use it?
Repository changes can miss project-specific routing, tests, documentation, or required verification steps.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md; mentions Codex.

This is beyondwin/FixThis's own configuration. It tells Claude Code and Codex how to work on FixThis itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything FixThis configures →

Reuse

Borrowing it

Nothing to install: this file belongs to beyondwin/FixThis. 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/beyondwin/FixThis/main/.agents/skills/fixthis-repository-change/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/beyondwin/FixThis

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 fixthis-repository-change

README.md
[![agentmods](https://agentmods.dev/badge/skills/beyondwin/fixthis/fixthis-repository-change.svg)](https://agentmods.dev/skills/beyondwin/fixthis/fixthis-repository-change)
Your own site
<a href="https://agentmods.dev/skills/beyondwin/fixthis/fixthis-repository-change"><img src="https://agentmods.dev/badge/skills/beyondwin/fixthis/fixthis-repository-change.svg" alt="Measured on agentmods" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 303 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 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 $0.00043 $0.00303
Opus 5 $0.00022 $0.00151
Sonnet 5 $0.00009 $0.00061
Haiku 4.5 $0.00004 $0.00030

Measured 8d ago against content hash f70723d2013c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

fixthis-repository-change 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.

.agents/skills/fixthis-repository-change/SKILL.md · 22 lines

What it actually says

FixThis Repository Change

Use for FixThis source checkout work. Do not use for installing FixThis into an external app.

  1. Read root AGENTS.md and run its Git/worktree preflight.
  2. Choose a matching task id from scripts/agent-route-registry.mjs; for console work run npm run agent:route -- --task console --json. Once paths are known use npm run agent:route -- --changed --base origin/main.
  3. Read only returned maintained docs and first source files, then inspect current implementation.
  4. Preserve unrelated dirty changes and make the smallest compatible change.
  5. Write the failing focused test before behavior changes.
  6. Run returned focused checks from cheapest to broadest.
  7. Rerun npm run agent:route -- --changed --json against the final diff.
  8. Run the returned broad gate and connected proof when required.
  9. Report PASS, FAIL, DEFERRED, or SKIPPED with evidence, reason, and residual risk.
  10. Recheck branch, upstream, dirty state, and worktrees.

Never modify personal or project Codex configuration in this workflow. Commit, merge, push, publish, resolve feedback, or stop a process only when requested.

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 · 22 lines · 43 tokens per session scan A f70723d2013c

Subscribe to this mod's changes

fixthis-repository-change is a skill published in the GitHub repository beyondwin/FixThis (5 stars, last pushed 1mo ago), licensed MIT. It adds 43 tokens to every session and 303 once invoked, about $0.0002 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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