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Documentation Index

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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

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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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Optional component

The NEAR Intents 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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Endpoints

TypeEndpoint
JSON-RPC (Frontend)https://solver-relay-v2.chaindefuser.com/rpc
WebSocket (Solvers)wss://solver-relay-v2.chaindefuser.com/ws

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Next steps

API Reference

Full API documentation for the Message Bus

Usage Examples

TypeScript examples for implementing a solver