Request execution, environment resolution, auth signing, assertions, spec imports, and the applyMutation workspace engine for API Circle Studio.

Shared types, ID generation, validators, and encryption helpers for API Circle Studio.

Hono-based mock server engine for API Circle. Parses OpenAPI/Postman/Insomnia into mock endpoints, serves them on Node/Bun/edge runtimes.

API Circle Lens CLI and MCP server: map every endpoint of your API to the code that implements it (the Code graph), and review pull requests for drift against your OpenAPI Spec. Needs a CLI key from an API Circle plan that includes the CLI or MCP.