Generate errors that preserve safe machine-readable details
Client users currently parse human error messages to detect conflicts.
- Focused work estimate
- 2h 30m + prerequisites
- Priority in the scenario
- Medium
- Engineering practice
- Error design · SDK design
Estimated field mix
- API design50%
- Developer tooling30%
- Security20%
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 partner platform publishes TypeScript clients. Generator upgrades create noisy diffs, occasional runtime mismatches, and uncertainty about which schema was packaged.
Setup prerequisites
- Create a small public API schema and two local mock server versions; use a temporary local package registry or archive files.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
Acceptance criteria
- Expose status, problem type, and safe request ID.
- Handle non-JSON failures without crashing the parser.
- Exclude authorization headers from error objects.
Implementation constraints
- Bound retained response-body bytes.
Verification to include
- Parse a conflict and a text gateway error.
- Verify oversized and secret-bearing responses stay bounded and sanitized.
Deliverables
- Typed error mapping.
Rollout and recovery
Keep message text compatible where practical; document structured fields.
Value of the work
For the engineer: Practice reproducible generation, compatibility reviews, and package provenance.
For the team: Reduce partner integration surprises with reviewable clients and recoverable releases.
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.