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This example mirrors the safety-and-blocking style policy from geval init: hard BLOCK rules when model or retrieval quality crosses a line.

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Signals

Your pipeline should emit metrics such as:
  • hallucination_rate (on component: generator)
  • context_relevance (on component: retrieval)

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Policy idea

  • Priority 1 — If hallucination rate exceeds a ceiling → BLOCK with a clear reason.
  • Priority 2 — If retrieval relevance falls below a floor → BLOCK.

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Contract

List the policy file(s) in contract.yaml: 
name: release-gate
version: "1.0.0"
policies:
  - path: policies/safety-and-blocking.yaml

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Run

geval validate-contract contract.yaml
geval check --contract contract.yaml --signals signals.json

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Policy rules · geval init