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The open-source runtime for autonomous work

Build your own Devin. For any domain.

No agent framework. No managed black box. Own the loop.

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01

Give this to Codex or Claude Code.

Run pip install cayu and create a code review agent.

One sentence. The agent figures out the rest.

02

Why Cayu

The loop was never the hard part.

Recovery

Crash without guessing.

Checkpointed effects. Honest recovery.

Cost control

Control every dollar.

Reserve before calls. Reconcile actual spend.

66% lessCache-aware compaction
49% lessCompacted research branches
See the live benchmark

Security by design

Your agent never sees the secret.

With virtual credentials, real keys stay outside the sandbox.

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See virtual credentials

Composable by contract

Bring your stack.

Swap infrastructure without rewriting the agent.

SandboxVaultMemoryProxyModelsMCP
  • Code review
  • Research
  • Negotiation
  • Support
  • Operations
  • Finance
  • Compliance
  • QA & testing
  • Incident triage
  • Recruiting
  • Procurement
  • Reporting
  • Code review
  • Research
  • Negotiation
  • Support
  • Operations
  • Finance
  • Compliance
  • QA & testing
  • Incident triage
  • Recruiting
  • Procurement
  • Reporting

Build agents you can trust with real work.

Own the loop.Own the margin.Explain every outcome.

Build with Cayu