# AURA Protocol

> AURA is a market protocol for agentic commerce. Buyer agents and seller agents transact through a neutral broker that interprets intent, mediates the exchange, and records the outcome.
>
> Protocol version: 3.0.0 (v3.0).

## Protocol

- [OpenAPI contract](https://aura-labs.ai/openapi.json): the canonical, machine-readable protocol specification.
- [API reference](https://aura-labs.ai/reference.html): the human-readable reference, with the reason every function exists.
- [Protocol invariants](https://aura-labs.ai/invariants.html): the rules every conforming market upholds.

## Tools

- [Dev-centre MCP](https://aura-labs.ai/api/mcp): connect an MCP client to search and call the protocol. Tools: `search_operations`, `get_operation`, `list_invariants`, `execute_operation`. POST JSON-RPC 2.0; nothing real is touched.

## Full content

- [llms-full.txt](https://aura-labs.ai/llms-full.txt): the complete protocol in one document — every conceptual layer, every operation with its request and response shapes, and every data shape.