Pricing

Free.

Project Spine is an MIT-licensed OSS CLI. Local evidence, Git replay, literal guardrails, reports, CI checks, MCP context, compile, and drift need no account or paid tier.

The v0.10 beta learning workflow is published to npm at an exact version and mirrored by a versioned GitHub Release asset. Optional evaluation adapters may use billable third-party model services; Spine itself requires no subscription.