API Architect vs Apistaq

API Architect is a web product for describing software architecture, business rules, APIs, and AI governance in a shared executable DSL. Its versioned language models systems, containers, and flows, while centralizing DTOs, compliance rules, and operational constraints. From those definitions, it generates APIs aligned with business needs, governance, and standards. Enterprise DSL is presented as a declarative language covering architecture, business, APIs, rules, AI, governance, and compliance. AI systems can load the DSL as an internal model so generated APIs follow business rules and governance boundaries. An example sets a market-specific maximum length for a resource field and defines a GET route returning that resource. Listed use cases include banking and insurance, retail and e-commerce, industry and energy, and SaaS publishers. Free costs nothing for one active project and community support; Starter is €29 a month; Pro is €79 a month.

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.