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CI/CD Failure Alert with Diagnosis

Example prompt: "When a GitHub Actions build fails on our main branch, analyse the error logs, summarise what went wrong, and post the diagnosis to #engineering on Slack."

How to automate CI/CD failure diagnosis with GloriaMundo

The Problem

A failed CI/CD build on your main branch is urgent, but the notification you get from GitHub is just a red cross and a link to hundreds of lines of log output. Someone has to open the run, scroll through the logs, interpret cryptic compiler or test errors, and then relay the findings to the team. For repositories with long build pipelines, this triage step can take 10-20 minutes per failure — time that delays the fix and blocks other developers from merging.

How GloriaMundo Solves It

We build a workflow that triggers whenever a GitHub Actions workflow run fails on the main branch. An integration step fetches the failed run's logs and metadata — the branch, commit SHA, author, and the raw log output from the failing job. An LLM step reads the logs, identifies the root cause (test failure, dependency issue, build configuration error, or timeout), and writes a short, structured diagnosis with the relevant log snippet. Finally, an integration step posts the diagnosis to a designated Slack channel so the team can see at a glance what broke and who last committed. Glass Box preview shows you the diagnosis message before it is posted, so you can verify the summary is accurate.

Example Workflow Steps

  1. Trigger (webhook): Fires when a GitHub Actions workflow run fails on the main branch.
  2. Step 1 (integration): Fetch the failed run's metadata and log output from GitHub — commit SHA, author, job name, and the raw error logs.
  3. Step 2 (LLM): Analyse the logs and produce a structured diagnosis — root cause category, the specific error message, the file and line number if available, and a suggested next step.
  4. Step 3 (integration): Post the formatted diagnosis to #engineering on Slack, including a link back to the failed run.

Integrations Used

  • GitHub — source of the failed workflow run logs, commit metadata, and author information
  • Slack — receives the formatted diagnosis so the team can act on it immediately

Who This Is For

Software engineers and DevOps teams who maintain CI/CD pipelines and want faster triage when builds break, particularly on shared branches where failures block the whole team.

Time & Cost Saved

Manually reading through CI logs and summarising a failure typically takes 10-20 minutes per incident. For a team experiencing 3-5 build failures a week, that is 30-100 minutes of triage work saved weekly. This workflow reduces the triage step to seconds, with a brief review in the Glass Box preview. The workflow uses integration and LLM steps, costing a few credits per run.