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Kestrel Labs

We build practical software and systems—focused on clarity, reliability, and shipping.

What we do

  • Product engineering & prototyping
  • Data + automation + integrations
  • Developer tooling and internal platforms
  • Applied AI (when it genuinely helps)

How we work

  • Small, high-trust teams
  • Bias toward simple designs and maintainable code
  • Docs, tests, and automation as defaults
  • Ship early, iterate fast, measure impact

Open source

We open-source tools and building blocks when they’re useful outside our walls. If you use something we publish, issues and PRs are welcome. Please include context and repro steps.

Repositories

Pinned repos highlight what we consider most useful/maintained. Older experiments may be archived but can still be good references.

Security

Found a vulnerability? Please do not open a public issue. Email: security@kestrellabshq.com

Contact

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  1. .github .github Public

  2. kl-llm-contract-evals kl-llm-contract-evals Public

    A framework for contract-based LLM evaluation, focused on checking whether model outputs satisfy explicit behavioral expectations. It’s designed to support more disciplined testing of prompts, work…

    Python

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