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The Message Bus is a system component that optimizes price discovery between users and market makers. It handles communication and submits settlement transactions to the Verifier contract. Message Bus Architecture
The protocol can operate without the Message Bus:
  • Frontends can use any quoting mechanism to compose and publish signed intents
  • Market makers can index the NEAR blockchain directly to find intents to fill

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How it works

  1. User requests a quote - A frontend sends a quote request to the Message Bus
  2. Market makers receive the request - The Message Bus broadcasts the request to all connected solvers via WebSocket
  3. Market makers respond - Solvers evaluate the trade and respond with signed intents
  4. User accepts a quote - The frontend displays options to the user, who selects and signs their intent
  5. Settlement - The Message Bus bundles the matching intents and submits them to the Verifier contract

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Next steps

API Reference

Read the API documentation for the Message Bus

WebSocket Reference

Subscribe and respond to quote requests in real-time