Substrate MCP

What it does

Substrate MCP is a powerful bridge for AI agents to interact directly with the Polkadot ecosystem. It allows agents to explore blockchain metadata, decode extrinsics, submit developer transactions, and analyze Polkadot SDK updates to understand their impact on existing codebases.

Tools

• fetch_and_analyze_release: Analyzes Polkadot SDK releases and generates summaries of crate changes.
• find_runtime_pallets: Scans project directories to discover configured runtime pallets.
• list_polkadot_releases: Retrieves available Polkadot SDK releases.
• subxt_execute: Decodes and explores Substrate blockchain data via subxt.
• filter_metadata: Searches chain metadata for pallets, storage, and events.
• query_extrinsics: Retrieves decoded transaction data from blocks.
• query_events: Queries specific blockchain events.
• query_storage: Reads chain state including balances and governance.
• list_pallet_storage: Discovers storage entries available within a pallet.
• submit_dev_extrinsic: Submits extrinsics using developer accounts (e.g., Alice, Bob).

Installation

{
  "mcpServers": {
    "substrate-mcp": {
      "command": "substrate-mcp"
    }
  }
}

Supported hosts

• Claude Desktop