state_getMetadata – Mythos JSON-RPC Method

Returns the SCALE-encoded runtime metadata for the active Mythos runtime. Clients decode this blob to understand pallets, storage layouts, constants, and extrinsic signatures.

Parameters

This method takes no parameters.

Returns

Field	Type	Description
result	string	Hex-encoded runtime metadata.

Request Example

{
  "jsonrpc": "2.0",
  "method": "state_getMetadata",
  "params": [],
  "id": 1
}

Usage Tips

• Cache metadata and only refresh after a runtime upgrade to avoid unnecessary downloads.
• Use polkadot.js (api.runtimeMetadata) or subxt codegen to process the response.
• Historical metadata is available by supplying a block hash to state_getMetadata via the at parameter (JSON-RPC v2 extension).

Related Methods

• state_getRuntimeVersion
• rpc_methods
• state_call