Rotate partner credentials without indefinite dual-key access
Customers need rotation overlap, but old keys remain valid forever.
- Focused work estimate
- 3h 30m + prerequisites
- Priority in the scenario
- High
- Engineering practice
- Credential lifecycle
Estimated field mix
- Security80%
- API design20%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
A fictional operations platform lets customers connect automation clients. Broad API keys and inconsistent tenant checks make delegated access difficult to review.
Setup prerequisites
- Create a local authorization service and synthetic partner clients for two organizations; generate disposable test credentials only.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Issue a distinct new credential generation.
- Set an explicit overlap expiry for the old generation.
- Show generation status without exposing credential values.
Implementation constraints
- Reveal a generated test credential only through the intended creation response.
Verification to include
- Use both generations during overlap.
- Reject the old generation after expiry.
Deliverables
- Credential rotation workflow.
Rollout and recovery
Keep overlap bounded and auditable; never restore retired credentials silently.
Value of the work
For the engineer: Practice delegated authorization, resource scoping, and secure public API ergonomics.
For the team: Provide usable partner access that remains least-privilege and revocable.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.