Production approvals - Sponson

The default environment is always preview. A run writes to production only when you ask for it, and only with an approver:

sponson plan  --env production                       # read-only; reports requiresApproval: true
sponson apply --env production                       # refused with ENV_NOT_APPROVED, nothing written
sponson apply --env production --approved-by alice   # runs, and records approvedBy in the receipt

The approver must come from a person or an approval workflow, never from an agent. The same rule applies to a preview run that contains a line writing to production, which is why production lines are filtered with environments: [production].

In CI

Put the production job behind a GitHub environment with required reviewers and pass the reviewer’s name as approved-by. The complete workflow, including the step that reads the approver back, is in CI with GitHub Actions.

Read next

The rule and the environment filter: Environments in the plan format.
A plan with preview and production lines: Examples.
What agents must never do: Agents and MCP.
Why production is never inferred: ADR 0012.