Mirrors
Catch and fix AI agent regressions before they reach production
launched 1d ago
Roasty review of Mirrors
Nobody has swiped on Mirrors yet.
Mirrors launched on 10 September 2026 on Y Combinator, in the week of 7 September 2026. Every swipe on the card above counts.
B2BDeveloper ToolsSaaSDevOpsArtificial Intelligence🃏 B2B deck →
What they say it does
Mirrors provides regression testing for AI agents. Teams shipping agents constantly change prompts, models, and tools, and there's no way to test any of it. Agents call bespoke internal tools and APIs no test framework can reproduce, so most teams ship on vibes. Mirrors rebuilds the tools your agent calls from your own production traces, then replays real sessions against every change before it merges. You see which tool calls changed, which arguments moved, and where state landed differently. And when something fails, we tell you whether your agent regressed or something upstream moved. Built for teams whose agents take irreversible actions. Refunds, record updates, outbound email. Runs in your CI on every PR.
