# Api

One key, one billing surface, one contract. Every api mivia ships
lands here; the same bearer key works across all of them against one
prepaid balance. Requests are processed in memory and discarded; api
traffic is never training data.

## Surfaces

Every api speaks REST and streamable-http MCP from one container
behind one bearer key. Call it from plain HTTP or from any MCP
client (Claude, Cursor, your own agents).

- [Quickstart](/docs/quickstart) - your key and your first call
- [REST api](/docs/rest-api) - every endpoint with real examples
- [MCP](/docs/mcp) - tools for Claude, Cursor, and your agents
- [Authentication](/docs/authentication) - key format and handling
- [Errors](/docs/errors) - every status code and refusal
- [Pricing](/docs/pricing) - rates, free tier, rate limits

## mivia-small-json

api 01. Any text in, strictly valid JSON out: twelve built-in schema
classes plus your own registered schemas, picked zero-shot. Every
input returns a structured record with confidence or a typed
clarification, never a refusal and never invalid JSON.

[model card: benchmarks, guarantees, and the full contract](/models/mivia-small-json)