When a 200 Response Still Breaks the Contract
A green status is not the same as a conforming response.
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API engineering, from the spec out
Product updates, engineering notes, and guides for designing, debugging, testing, mocking, and serving MCP tools from one OpenAPI spec.
Browse the guidesWhat Is API Scenario Testing?
Scenario testing verifies a connected flow, not a single isolated response.
Read articleWhat Is AI Code Review?
AI code review turns a diff into prioritized, evidence-backed findings without replacing your judgment.
Read articleWhat Is Agent2Agent (A2A)?
A2A lets agents communicate through a standard task-based protocol.
Read articleWhat AI Code Review Cannot Catch
A review has real blind spots; here is what to verify by other means.
Read articleDDL for MySQL, SQL Server, or Oracle from One Spec
One source spec feeds three database dialects.
Read articleUnmounted Routers and Unreachable Routes
A defined route is not callable until its router is mounted.
Read articleChaining Requests with Extracted Variables
Extracted variables are the glue that keeps a multi-step flow realistic.
Read articleTurning a Scanned Spec into Scenario Tests
The scanned spec is the starting point for connected scenario verification.
Read articleThe Four-Layer Reconciliation Explained
The layers move from the live database to the proposed change.
Read articleThe Evidence Behind an AI Review Verdict
The verdict is computed from evidence, not from the model's opinion.
Read articleTesting Async and SSE Flows as a Scenario
Long-running and streaming work still needs ordered, connected verification.
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