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