RPC error -32600: Invalid request

Last updated: October 24, 2026

At a glance

Cause

The JSON sent is not a valid JSON-RPC 2.0 Request object — e.g. missing jsonrpc/method, wrong types, or a malformed batch element.

Solution

1. Include "jsonrpc": "2.0", a string method, and an id.
2. Ensure params is an array or object.
3. Validate each element of a batch independently.

Example

{
  "id": null,
  "error": {
    "code": -32600,
    "message": "Invalid request"
  },
  "jsonrpc": "2.0"
}