Migrate 180 microservices with dual Cursor agents
Brex built generation and validation Cursor agents that draft PRs, fix CI, and run integration tests so one engineer migrated 180 Micronaut services in a month.
- Agent or tool
- Cursor
- Topic
- DevOps & Infra
- Reported on
- Blog
- Added
- 2026-10-15
Why it matters
Keeping servers and pipelines healthy is constant, detail-heavy work. Agents that can read logs and run routine fixes are a big help, as long as a person keeps an eye on what changes. It is one of 40 sightings filed under DevOps & Infra on Agent Sightings (number 14 by interest), and one of 30 involving Cursor.
How you could try it
Here is a reusable prompt, written by us in our own words, that captures the task. Paste it into Cursor or any similar agent and adjust the details to your situation.
For ticket <id>, apply the Micronaut 4 migration scripts, fix local build errors using the matching skills, open a draft PR, then stop after three failed self-corrections and comment what blocked you.
Tip: Try it first on a staging system or with read-only credentials, and require approval for anything that changes production.
Source
Read the original first-hand account on Blog: https://www.brex.com/journal/agent-automations-for-big-migrations. Our summary is a paraphrase; details are in the source.