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Mirrors

Active · Fix recurring AI agent mistakes with real-time guidance

7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5

A sum of public facts, not a judgement and not investment advice.

Competitors

Companies closest to Mirrors
Company
videogame.aiShared: agent work, productionspeedrun SR002Not statedAI

Adjacent

Also from F26 in AI

All of F26

Founders

  • Aryan SinghalFounder/CEO

About Mirrors

Production AI agents keep making the same mistakes. The usual fix is another line in the system prompt. Over time, the agent carries instructions for dozens of situations, even when it's doing something simple, and every correction becomes another thing to maintain. Mirrors helps developers maintain production agents by turning recurring mistakes into targeted corrections. Mirrors surfaces recurring mistakes across your production runs. You write a correction, choose the situations where it applies, and preview which past conversations it would have reached. Once activated, Mirrors adds it to your agent only in those situations. You can then compare outcomes with and without the correction to see whether it helped. Unlike skills, the agent doesn't decide what to load. The scope you set does. Corrections live in one place, scoped to the right accounts and workflows. Mirrors connects through an SDK and works with any agent framework, and your application keeps control of its model calls and tools. We're building Mirrors for engineering teams running customer-facing agents.

YC batch
F26 · Fall 2026
Status, per YC
Active
Category
AI, Developer tools
Team size
2
Location
San Francisco, CA, USA
Founded
2026
Checked
6h ago

YC tags: AIOps, Developer Tools, SaaS, B2B, AI

Changes seen

TagsNov 9, 2026

Newly tagged SaaS; no longer tagged Infrastructure.

One-linerNov 2, 2026

Rewrote its one-liner; it read "Give AI agents the right context at the right moment"

TagsNov 2, 2026

Newly tagged Infrastructure; no longer tagged SaaS.

One-linerOct 12, 2026

Rewrote its one-liner; it read "Steer AI agents in real time using lessons from production runs"

WebsiteOct 8, 2026

Moved its website from runmirrors.com to mirrors.dev.

Website linkOct 8, 2026

Website link changed from https://www.runmirrors.com to https://www.mirrors.dev.

TagsOct 8, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

One-linerOct 5, 2026

Rewrote its one-liner; it read "Fix your AI agent's errors at runtime, so they never happen twice"

SubindustryOct 5, 2026

Subindustry changed from B2B -> Infrastructure to B2B -> Engineering, Product and Design.

Mirrors in F26: 219 companies, 89% AI

LinkedIn

Mirrors: questions

Which YC batch was Mirrors in?

Mirrors was in Y Combinator's Fall 2026 batch (F26).

Is Mirrors still active?

Y Combinator lists Mirrors as active.

Who founded Mirrors?

Mirrors's founders, as listed on its YC page: Aryan Singhal (Founder/CEO).

Where is Mirrors based?

Mirrors lists San Francisco, CA, USA as its location on YC's directory.