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Agent skill

Fix Issue

by PrefectHQ in PrefectHQ/fastmcp

Carry a selected FastMCP bug from reproduction through a scoped fix, compatibility review, validation, and a monitored pull request.

Apache-2.0Auto-check passedDevelopment

Install Fix Issue

skills CLI
$ npx skills add PrefectHQ/fastmcp --skill fix-issue -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install PrefectHQ/fastmcp fix-issue --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/PrefectHQ/fastmcp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/fix-issue .claude/skills/fix-issue && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
fix-issue
GitHub stars
28k
Token cost
~842 tokens
SKILL.md length
422 words
Files
1
Skills in repo
9
Repo updated
First seen
Licence
Apache-2.0

At a glance

Carry a selected FastMCP bug from reproduction through a scoped fix, compatibility review, validation, and a monitored pull request.

  • Tasks that involve Pull requests
  • SKILL.md covers Establish the contract, Red, green, review and Publish and follow through
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
  • Tasks that involve MCP servers

What it does

Fix Issue is an agent skill from PrefectHQ/fastmcp. Carry a selected FastMCP bug from reproduction through a scoped fix, compatibility review, validation, and a monitored pull request.

Its SKILL.md is about 840 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development, covering Pull requests and MCP servers. It works with Model Context Protocol and Python. The repository describes itself as: 🚀 The fast, Pythonic way to build MCP servers and clients. The licence is Apache-2.0.

When your agent uses it

  • Tasks that involve Pull requests
  • Tasks that involve MCP servers

Example prompts

  • “/fix-issue”

What it can do on your machine

Read from SKILL.md and the folder at commit 5baeacf. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Fix Issue loads about 842 tokens when it runs. Until then it costs about 36 tokens; SKILL.md has 422 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~36
When it runs · the whole SKILL.md, loaded when a task matches
~842

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from PrefectHQ/fastmcp at commit 5baeacf, republished under its Apache-2.0 licence (© PrefectHQ). 422 words, ~842 tokens.

Download SKILL.mdSave it as .claude/skills/fix-issue/SKILL.md (or your agent's skills folder).
name
fix-issue
description
Carry a selected FastMCP bug from reproduction through a scoped fix, compatibility review, validation, and a monitored pull request.

Fix a selected issue

Read AGENTS.md and the contribution policy in the development guide. Read the issue's full discussion, relevant history, and associated PRs in all states. Evaluate existing contributions before writing a competing fix; use review-issue when assignment is the next decision. Preserve contributor authorship when carrying existing work forward.

Establish the contract

Trace the public request to the failing operation. Confirm supported behavior is broken, not merely surprising. State the scope and compatibility boundary before implementation: which inputs must change, which adjacent behavior must remain, and any migration needed. If the intended contract is unresolved, bring that precise question to the maintainer.

Red, green, review

Use python-tests. Reproduce the failure on unchanged code, confirm it fails for the right reason, then make the smallest causal fix. Test explicit overrides and neighboring supported paths that share the changed branch. Avoid expanding the fix to unrelated standards gaps.

Self-review the full change with review-pr, including docs and dependency bounds. Separate necessary compatibility changes from accidental regressions and say whether a breaking change remains. Do not infer compatibility from passing tests.

Run the repository's required dependency sync, full tests, and static checks before committing. Honor branch and attribution conventions. If a required check fails, investigate and report evidence rather than hiding the failure.

Show full SKILL.md (210 more words)Show less

Publish and follow through

Within existing authorization, update the existing PR or open a focused one, using draft status when appropriate. Follow repository PR-body conventions and the user's pr-body skill when available. Describe the actual user-visible change and any migration, not the development diary.

For a maintainer implementation of a community issue, apply Contributor credit before committing and publishing. Read the issue author's GitHub profile to establish their account identity; prefer the GitHub-provided noreply address, and ask if identity is unclear. Add their Co-authored-by: Name <email> trailer to the implementation commit and at the end of the PR description, alongside existing contributor attribution. Reporting the problem is enough; do not require code or root-cause analysis. Honor opt-outs and do not credit bot accounts as human issue contributors.

Maintainers are generally exempt from supplemental credit checks. For maintainer reports and routine backports, preserve existing community attribution and proceed; do not add a maintainer merely because they opened the original PR or ask for guidance on that basis. A backport does not need a fresh credit audit.

Start review-pr monitoring after publication. CI completion and review completion are distinct. Resolve real findings and report material compatibility decisions; a green check does not settle them. Do not merge or mark ready without authorization.

© PrefectHQ, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/fix-issue of PrefectHQ/fastmcp.

Open the folder on GitHubat commit 5baeacf

Compare with similar skills

Fix Issue next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Fix Issue compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Fix Issue this skillPrefectHQ/fastmcp28k—~842Automated safety check: PassApache-2.0
Open PRArcadeAI/arcade-mcp1k—~2.9kAutomated safety check: PassMIT
Code Reviewoaslananka/kicad-mcp-pro119—~3.9kAutomated safety check: PassMIT
Repo Repairoaslananka/kicad-mcp-pro119—~581Automated safety check: PassMIT
ObservalObserval/Observal4.1k—~2.2kAutomated safety check: PassApache-2.0
MCP Debuggerdebugmcp/mcp-debugger171—~3.8kAutomated safety check: PassMIT

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Works with

Categories

Questions about Fix Issue

What does Fix Issue do?

Carry a selected FastMCP bug from reproduction through a scoped fix, compatibility review, validation, and a monitored pull request. Fix Issue is an agent skill from PrefectHQ/fastmcp. Carry a selected FastMCP bug from reproduction through a scoped fix, compatibility review, validation, and a monitored pull request.

When should I use Fix Issue?

Fix Issue fits situations like: tasks that involve Pull requests; tasks that involve MCP servers.

How do I install Fix Issue in Claude Code?

Run `npx skills add PrefectHQ/fastmcp --skill fix-issue -a claude-code`. Or copy the skill folder (.agents/skills/fix-issue in PrefectHQ/fastmcp) into .claude/skills/fix-issue in your project. Claude Code loads it when a task matches its description.

How do I install Fix Issue in Codex?

Run `npx skills add PrefectHQ/fastmcp --skill fix-issue -a codex`. Or copy the skill folder (.agents/skills/fix-issue in PrefectHQ/fastmcp) into .agents/skills/fix-issue in your project. Codex loads it when a task matches its description.

Can I use Fix Issue in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add PrefectHQ/fastmcp --skill fix-issue -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/fix-issue, .gemini/skills/fix-issue, .github/skills/fix-issue and .opencode/skills/fix-issue in your project.

What does Fix Issue need to run?

SKILL.md names no scripts, command-line tools or credentials: Fix Issue is instructions for the agent only.

Does Fix Issue access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Fix Issue safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Fix Issue use?

Fix Issue is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Fix Issue use?

About 842 tokens (SKILL.md is roughly 3.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Fix Issue?

Skills that share tags, products or a category with Fix Issue: Open PR (ArcadeAI/arcade-mcp, 1k stars), Code Review (oaslananka/kicad-mcp-pro, 119 stars), Repo Repair (oaslananka/kicad-mcp-pro, 119 stars) and Observal (Observal/Observal, 4.1k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Fix Issue?

PrefectHQ (a GitHub organization) maintains it in PrefectHQ/fastmcp, which has 27,989 GitHub stars. The repository holds 9 skills in this directory. The repository was last updated on October 6, 2026.

Source: PrefectHQ/fastmcp on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.