RESTCov Computes REST API Test Coverage From an OpenAPI Spec and HTTP Logs With No Source Instrumentation

arXiv 2608.28114·low signalXBlueskyLinkedInCopy link

RESTCov (arXiv 2608.28114, 2026-08-28, cs.SE) is a tool paper for a gap most teams hit with third-party APIs: traditional coverage needs source instrumentation, which is impractical for distributed or externally maintained REST services reachable only as black boxes. It derives structural coverage from an OpenAPI specification plus observed request/response logs, reporting across paths, operations, parameters, media types, status codes and status classes, and emits both machine-readable output and an HTML report for inspecting gaps and diagnosing spec-log mismatches. Repository at github.com/2tolgahan2/RESTCov with a screencast at youtu.be/mNz2P43OyUc.