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CI Guardrails - No Mutable Refs

No Mutable Refs

✓ Guardrail CI Guardrails Beta Devex Build And Ci
ci.no-mutable-refs

Ensures no third-party CI dependencies reference mutable refs like @main, @master, or @latest. Reads from normalized .ci.dependencies.

mutable branch main master supply-chain
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Compatible Integrations

This guardrail works with the following integrations. Click to see how to use No Mutable Refs with each collector.

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No Mutable Refs + GitHub Actions Collector Provides CI lint results and dependency pinning data via normalized paths
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Enable This Guardrail

Add the parent policy to your lunar-config.yml to enable this guardrail.

📄 lunar-config.yml 
policies:
  - uses: github://earthly/lunar-lib/policies/ci@v1.0.5
    include: [no-mutable-refs]
    # with: ...

How This Guardrail Works

This guardrail is part of the CI Guardrails policy. It evaluates data collected by integrations and produces a pass/fail check with actionable feedback.

When enabled, this check runs automatically on every PR and in AI coding workflows, providing real-time enforcement of your engineering standards.

Learn How Lunar Works →
1
↓ Integrations Gather Data
Collectors extract metadata from code, CI pipelines, tool outputs, and scans
2
{ } Centralized as JSON
All data merged into each component's unified metadata document
3
✓ This Guardrail Checks Current
No Mutable Refs runs and provides pass/fail feedback

Related Guardrails

Other guardrails in the CI Guardrails policy.

Guardrail Devex Build And Ci
Lint Clean

Ensures no lint errors across CI configuration files. Reads from the normalized .ci.lint path — works with any CI...
Guardrail Devex Build And Ci
Dependencies Pinned

Verifies all third-party CI dependencies use SHA or tag pins, not branch refs. Reads from the normalized...
CI Guardrails

CI Guardrails

This guardrail is part of the CI Guardrails policy, which includes 3 guardrails for devex build and ci.

View Policy

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