Implement trigger: MR Created / Opened (merge_request_create)

Summary

3.5M MR creation events occurred in Q1 with zero automatic baseline review. This trigger fires when a merge request is created, enabling automated first-pass reviews and context enrichment at the Create stage.

Audit Event Name: merge_request_create

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Agent Examples

Agent 1 — Baseline MR Review Agent

Pulls all diffs from the newly created MR, runs a first-pass Duo Code Review with inline comments, and applies labels based on changed files.

Tools:

• Build Review Merge Request Context
• List Merge Request Diffs
• Post Duo Code Review
• Create Merge Request Note
• Update Merge Request

Agent 2 — MR Context Enrichment Agent

Reads the MR details, searches for related issues, and posts a comment summarising related work, potential conflicts, and a checklist of linked acceptance criteria.

Tools:

• Get Merge Request
• Gitlab Issue Search
• Gitlab Merge Request Search
• Create Merge Request Note