API & MCP
Carry a writing voice into the tools you already use
REST provides stable machine contracts. MCP adds an official human-readable presentation. Set interfaceLocale: "en" for English presentation only; it never changes the submitted text or engine.
REST API
Use versioned JSON operations and stable error codes. Inspect the OpenAPI document for the complete schema.
MCP server
Connect an agent, list available tools, and request English presentation for measurement results.
Language boundary
Production authorship verdicts remain calibrated for French. Unsupported languages produce an explicit unavailable result, not a score of zero.