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leekleek/agent-skills/skills/fix-ci-failures/SKILL.md

fix-ci-failures

Skill5 starsChanged 11 days agoMITView on GitHub

Read a branch's latest failed CI runs, triage each failure from its existing logs, and fix the real ones.

  • Commits and pushes

7 other projects use a version of this.

Adopted by

Most recently taken up by

Used with

Projects with it also use add-policy, tool-rename-deprecation and 2 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
  • OpenCortexIDESkill

    add-policy

    Use when adding, modifying, or reviewing VS Code configuration policies. Covers the full policy lifecycle from registration to export to platform-specific artifacts. Run on ANY change that adds a `policy:` field to a configuration property.

    Also in 4 projects that use this

  • gitpod-ioSkill

    tool-rename-deprecation

    Ensure renamed built-in tool references preserve backward compatibility. Use when renaming a toolReferenceName, tool set referenceName, or any tool identifier. Run on ANY change to tool registration code. Covers legacyToolReferenceFullNames for tools and legacyFullNames for tool sets.

    Also in 4 projects that use this

  • gitpod-ioSkill

    hygiene

    Use when making code changes to ensure they pass VS Code's hygiene checks. Covers the pre-commit hook, unicode restrictions, string quoting rules, copyright headers, indentation, formatting, ESLint, and stylelint. Run the hygiene check before declaring work complete.

    Also in 4 projects that use this

  • +1 more from gitpod-io

The file

We split this skill into the rules it gives an agent

8 rules. 0 are common, 5 are distinctive, and 3 are very specific to this project.

  • 0

    Common

    Most of the 7 edited versions we read keep these.

  • 5

    Distinctive

    This author's own choices. Worth a look.

  • 3

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Project context: Follow the repo's AGENTS.md / CLAUDE.md rules for tests, lint, cache clears, and a dirty tree.

    line 17
  2. Distinctive:

    Run git fetch origin, then one script, which reads existing runs and logs and never triggers CI:

    line 22
  3. Very specific:

    Read git log --oneline <headSha>..origin/B first: commits since the failed run may already fix it.

    line 37
  4. Distinctive:

    When the command cannot run locally (a missing service or secret), classify from the log and the code alone, and say that it is …

    line 52
  5. Distinctive:

    No LEGIT left: go to step 5.

    line 59
  6. Very specific:

    When step 3 worked in the main checkout on a local B, it is now in step with origin/B.

    line 86
  7. Very specific:

    If step 3 created a worktree and its commits are on origin/B (or in the open pull request), remove it without asking, from the main …

    line 95
  8. Distinctive:

    Start each job line with a mark: ✅ fixed or stale, ⚠️ flaky, infra, or unreproduced.

    line 105

“Common” is measured: kept by at least 6 in 10 of the 7 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Fix CI Failures

Take the branch named in the input, or main when none is given. Find its most recent CI failures, triage each one from the logs that already exist, and fix what is real. The logs are the whole evidence: CI is a record you read, never a thing you trigger. Your own proof that a fix works is the failing command run green locally. Text after the branch name is overriding guidance.

Project context. Follow the repo's AGENTS.md / CLAUDE.md rules for tests, lint, cache clears, and a dirty tree.

1. Find the latest failures

Run git fetch origin, then one script, which reads existing runs and logs and never triggers CI:

bash <this-skill-dir>/scripts/failed-jobs.sh B --out <scratch>/ci-logs

For each workflow it takes only the newest completed run on the branch that was not cancelled, looking back at most 10 runs: an older failure whose workflow has passed since is already fixed, and a run still in progress or cancelled is not evidence. It prints one JSON entry per failing workflow (workflow, run_id, url, head_sha, conclusion) with each failed job's name, url, first_errors (the runner's ##[error] annotations, then test-runner and compiler failure lines; never the trailing exit code 1), and log, the full failed-job log on disk. Read the log around an error when the first lines do not settle it. A workflow whose last 10 completed runs were all cancelled comes back as all_cancelled with no jobs: report it with no verdict, since it has no log to triage.

[] means the branch's latest completed runs are green: report that, and stop.

Completion criterion: every failed job is listed with its workflow, run URL, headSha, and the first real error from its log (not the trailing exit code 1).

2. Classify every failure

Read git log --oneline <headSha>..origin/B first: commits since the failed run may already fix it. Then write one line per failed job:

Failure N: [LEGIT | STALE | FLAKY | INFRA] — <one-line evidence>
  • LEGIT: the error points at code on the branch, and it reproduces at origin/B when you run the same command locally.
  • STALE: a later commit fixed it. Cite the sha, or show the command passing locally.
  • FLAKY: it passes locally at the same sha, and the log shows timing, ordering, or a network call.
  • INFRA: runner, cache, registry, secret, or quota errors, and anything that needs a CI setting or a human decision. Name what it needs.

When the command cannot run locally (a missing service or secret), classify from the log and the code alone, and say that it is unreproduced.

Completion criterion: every failed job has a line.

3. Fix the legit ones

No LEGIT left: go to step 5.

Work on the branch without disturbing a dirty tree or another worktree's checkout. When the tree is dirty or the branch is checked out elsewhere, use git worktree add .claude/worktrees/ci-<branch> origin/B (at that path, never a sibling directory), then make it runnable with laravel-herd-worktrees' Bootstrap a bare worktree section before running anything in it. Leave it in place until step 5. Per LEGIT failure: make the minimal change, run the failing command locally until it is green, then commit with explicit staging (Conventional Commits, naming the job).

Completion criterion: every LEGIT failure has a commit that turned its command green locally.

4. Land the fixes

A commit on the worktree fixes nothing until it is on B. Show the commits, say where they will go, and land them without asking:

  • Default: push to B with git push origin HEAD:B (no --force). If it is refused because origin/B moved, git fetch origin, rebase onto origin/B, re-run each fixed command, and push again.
  • Direct pushes forbidden (branch protection, or the repo's rules): push a fix/ci-<branch> branch and open a pull request into B with a body in the pr skill's template.
  • A user instruction in the input or the conversation ("open a PR", "don't push") overrides both.

The push starts new CI runs. Leave them running and do not come back for their result. When step 3 worked in the main checkout on a local B, it is now in step with origin/B; when it worked in a worktree, leave the user's local B as it is and say it is behind.

Completion criterion: every fix commit is on origin/B, in an open pull request, or kept local by the user's instruction.

5. Clean up and report

If step 3 created a worktree and its commits are on origin/B (or in the open pull request), remove it without asking, from the main checkout, by laravel-herd-worktrees' Remove a served worktree (it never forces). If it refuses, or the commits are kept local, keep it and ask one yes/no question: "Can I delete the worktree I created?" Remove it only on yes, never with --force; otherwise name it in the report as kept.

One line per failed job: fixed in <sha>, stale (<sha>), flaky, infra (what it needs), or unreproduced. Then say where the commits landed, and each worktree removed or kept. Start each job line with a mark: ✅ fixed or stale, ⚠️ flaky, infra, or unreproduced.

Guardrails

CI evidence comes only from runs that already exist. Do not run gh run rerun, gh workflow run, or gh run watch, do not push an empty or retry commit, and do not wait on a run.

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