Free live demo · Synthetic input

API Contract Check

Check basic OpenAPI document completeness without network access.

Structure lint only; not a full OpenAPI parser or live endpoint test. Do not paste private records, credentials or production data.

Try it now

The example is synthetic. Edit it if needed. The request is sent to the same public API used by agents.

Result

Run the synthetic example to see the response.

Connect via REST or MCP

POST https://aibitious.com/404/v1/lab/openapi_preflight

MCP endpoint: /404/mcp/. Exact catalog · OpenAPI reference · All tools