← SpecCaster

SpecCaster blog

Essays on API contract testing, spec drift, and CI.

• How to catch breaking API changes automatically in CI
  2026-09-11 · Two gates (drift + contract run) and the working example.
• Why your OpenAPI spec drifts — and how to make CI catch it
  2026-09-11 · The three drift patterns and the generated-suite fix.
• SpecCaster vs Schemathesis vs oasdiff — OpenAPI testing tools compared
  2026-09-11 · Three tools, three different jobs. How to choose.