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JSON-RPC

protocol web

A lightweight remote procedure call protocol encoded in JSON, where a client sends a method name and parameters and the server returns a result.

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Definition

JSON-RPC is a stateless, transport-independent remote procedure call protocol that uses JSON as its data format. A client sends a JSON object with a method name and parameters; the server executes the method and returns a JSON result. MCP (Model Context Protocol) uses JSON-RPC as its transport layer: the agent runtime sends tool call requests as JSON-RPC messages to MCP servers, which execute the tools and return results.

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Source

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