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YCF26· AI· Devtools

Mirrors

Fix your AI agent's errors at runtime, so they never happen twice

ActiveChecked 16h ago
Batch
F26
Status, per YC
Active
Team size
2
HQ
San Francisco, CA
In F2686 companies, 86% AI

Founders

  • Aryan SinghalFounder/CEO

Same space

About Mirrors

Your agent worked fine yesterday. Today it loops, drops context, or calls a tool with the wrong arguments, and you find out from a user. Teams shipping AI agents change prompts, models, and tools constantly, and the same failures keep coming back in production: context loss, loops, broken tool calls, regressions after a refactor. Mirrors learns from your agent's production traces. It captures what worked and what failed in real sessions, then delivers the fix at runtime. Instead of waiting for someone to notice a regression and patch it by hand, the fix is applied automatically, so the same error never happens twice. Built for teams whose agents do things they can't undo, like issuing refunds, updating customer records, or sending outbound email.

San Francisco, CA, USA

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.

Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.

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