/analyze-ci

name: analyze-ci
description: Analyze failed GitHub Action jobs. Takes one or more GitHub URLs (job, workflow-run, or PR) and summarizes each failure with root cause and log paths.
when_to_use: When CI is red or a check failed, when the user pastes a GitHub Actions job or run URL, or when asked why a PR's checks are failing.
argument-hint: "url(s) of failed GitHub Action jobs, workflow runs, or PRs"

Analyze CI Failures

Fetch logs from failed GitHub Action jobs and produce a focused per-job failure summary.

URLs provided: $ARGUMENTS

If no URLs are listed above, ask for a job, run, or PR URL and stop. `fetch-logs` requires at least one and exits 2 without.

Prerequisites

• **GitHub Token**: Auto-detected via `gh auth token`, or set `GH_TOKEN`.

Steps

1. **Fetch logs.** Run, single-quoting each URL so the shell does not interpret `?` or other special characters in it:

   uv run --package skills skills fetch-logs '<url>' ['<url>' ...]

The command prints one block per failed job containing the workflow/job name, URL, failed step, and paths to the cached raw log, failed-step log, and (optional) package versions file.

2. **Read each failed-step log and summarize it.** For every block, Read the file at its `Failed step log:` path, then identify:

• The root cause.
• Specific error messages (assertion errors, exceptions, stack traces).
• Full pytest test names where applicable (e.g. `tests/test_foo.py::test_bar`).
• A short log snippet showing the error context.

3. **Format each summary** with these fields, then a blank line, then the 1-2 paragraph summary.

• `Failed job: <workflow name> / <job name>`
• `Failed step: <step name>`
• `URL: <job_url>`
• `Raw log: <raw_log_path>`
• `Failed step log: <failed_step_log_path>`
• `Package versions: <package_versions_path>` (if present)

Preserve the `Raw log:`, `Failed step log:`, and `Package versions:` paths verbatim from step 1 so downstream agents can grep deeper.

Invocation examples

# All failed jobs on a PR
/analyze-ci https://github.com/mlflow/mlflow/pull/19601

# All failed jobs in one workflow run
/analyze-ci https://github.com/mlflow/mlflow/actions/runs/22626454465

# Specific job by URL
/analyze-ci https://github.com/mlflow/mlflow/actions/runs/12345/job/67890

# Multiple URLs at once
/analyze-ci https://github.com/mlflow/mlflow/actions/runs/123/job/456 https://github.com/mlflow/mlflow/actions/runs/789/job/012