JSON-RPC 2.0: What It Is and When to Use It
JSON-RPC 2.0 explained: request/response structure, batching, error codes, and when to choose it over REST for internal service communication.
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Tags: json, api, developer-tools
JSON-RPC 2.0: What It Is and When to Use It REST is not a protocol. It is an architectural style that maps operations to HTTP verbs and resource URLs. This works well for CRUD APIs where the operations align neatly with GET/POST/PUT/DELETE. It works poorly when you need to call procedures — actions that do not map to a resource and may have complex inputs. JSON-RPC 2.0 is a stateless remote procedure call protocol that uses JSON as its encoding format. It is simpler than REST in some ways (single endpoint, no URL design, no verb semantics) and more explicit in others (every call names the method it wants to invoke). It is the protocol underlying the Model Context Protocol (MCP), the Language Server Protocol (LSP), and a variety of internal service communication patterns. The Request…
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