API Architect vs Grapity

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.

Grapity is an open-source API governance platform for teams coordinating API contracts and their consumers. Its Registry compares each pushed specification with the previous version and blocks breaking changes with an explanation. It enforces semantic version increments and tracks deprecation lifecycles, including consumers and sunset dates. The Hub offers a searchable API list, endpoint exploration, side-by-side version comparisons, and a version timeline. Grapity governs OpenAPI and AsyncAPI formats, with CI/CD integration and role-based access control. For Kong, Grapity Gateway generates configuration from registered specifications, and the CLI provisions it through decK; Kong can also send access logs to the Registry using its http-log plugin for queries and traffic statistics. The project says it is licensed under Apache 2.0 and has no features locked behind paywalls. Self-hosted use costs nothing, billed forever, with unlimited APIs and team members. Cloud costs $29.95 a month and includes five APIs and five users.