What is Policy-as-Code (MCP)?
Expressing MCP tool access rules as version-controlled, machine-readable configuration (typically YAML) rather than UI-configured settings, enabling audit trails, peer review, and CI/CD integration.
WHY IT MATTERS
UI-based policy management doesn't scale. When you have 50 agents accessing 200 tools, clicking through permission dialogs isn't viable. Policy-as-code treats access rules like any other configuration — stored in git, reviewed in PRs, deployed through CI/CD.
This brings software engineering rigour to agent governance. Every policy change has an author, a timestamp, a review, and a rollback path.
HOW POLICYLAYER USES THIS
PolicyLayer policies are single JSON documents attached to grants. The dashboard's Raw JSON view exposes the exact document, so you can keep it in version control, review changes, and paste it back — with schema validation on save.