Live Demo · Engineering Agent
Watch the Engineering Agent review a multi-file PR, post structured comments, and catch the one missing test before a senior reviewer wakes up.
The Scenario
A staff engineer opens a PR at 11:14 PM touching twelve files across the billing service. In the old world this PR would sit in queue until the next morning, then take two hours of focused review time. The Engineering Agent picks it up in seven seconds.
The Workflow
Agent pulls the PR description, the linked Linear ticket, the diff, and the affected files' recent history.
Reads the PR diff, the three files most often touched alongside these, the team's own style guide, and the historical regression log for the billing service.
PR is in good shape overall. One missing test, two style nits, one suggestion to consolidate error handling. Nothing blocking — but the missing test should land before merge.
Agent posts a structured review with one 'required' comment (missing test) and three 'optional' suggestions. Each comment includes a code snippet and a citation back to the relevant convention.
Lightweight note in #billing-eng so the wider team sees this PR is in motion. No tagging, no interruption.
[2026-05-26 23:14:38] eng-agent PR_REVIEWED pr=4419 service=billing files=12 diff=842/311 comments=4 required=1 optional=3 policy=ENG-REVIEW-2026.1 context_files_loaded=18 duration=7s
By the time the staff engineer's reviewer is online the next morning, the PR is already addressed: missing test added, comments resolved. Time-to-merge: under 12 hours instead of 3 days.
Outcome at scale
16 hours → 3 hours
Across a full sprint this loop runs across every PR. Senior engineers stay in flow on the hard problems while the queue clears itself overnight.
