Apistaq vs oasdiff

Apistaq is an API governance control plane for platform teams that builds versioning, rate-limit policies, SDKs, and developer portals from OpenAPI specifications. It tracks spec changes, identifies breaking changes, and supports documentation by version, deprecation notices, and sunset dates. Rate-limit policies can use token bucket, sliding window, or fixed window algorithms, with global, tag-level, and endpoint-level inheritance. SDK generation covers TypeScript, Python, and Go, with publishing options for npm, PyPI, and pkg.go.dev; generation is available on Builder and Platform. The generated portal can include an interactive explorer, versioned documentation, SDK links, and spec-derived changelogs. Specs can be supplied through GitHub, GitLab, Bitbucket, a direct URL, or manual YAML or JSON upload. Apistaq says it does not proxy API traffic and is not an API gateway. The Free plan is free, Builder is $149 a month, and Platform is $399 a month. The Free plan includes basic versioning for up to three versions per API and global rate-limit policies.

oasdiff compares OpenAPI specifications, produces changelogs, and identifies breaking changes before release. It supports OpenAPI 3.0, 3.1, and 3.2, and detects 755 distinct breaking and non-breaking API changes. The CLI is available through Homebrew, a shell installer, Docker, and pre-built Linux, macOS, and Windows binaries. Output formats include text, JSON, YAML, HTML, Markdown, and GitHub Actions annotations. Its GitHub Action compares pull-request and base-branch specifications, adding inline annotations for breaking changes. A browser diff tool compares OpenAPI or Swagger specifications without installation or sign-up. Specs and changelogs are encrypted client-side before upload, and servers retain ciphertext they cannot read. The open-source engine, CLI, and GitHub Action use the Apache 2.0 license. A free plan includes CLI diffing, changelogs, GitHub Action annotations, side-by-side review, and encrypted spec storage. Pro costs $100/month and adds approval workflow, audit trail, merge gate, and up to five reviewers across five repositories. Free review links expire after seven days; Enterprise can load specs from GitHub without uploading or storing them.