What are the requirements to run Substrate MCP Server?
Rust, access to a Substrate node WebSocket endpoint, a valid signing keypair as hex, and a runtime metadata file (`artifacts/metadata.scale`).
@ThomasMarches
基本情報
A Model Context Protocol (MCP) server for Substrate blockchains, written in Rust and interfacing the subxt crate.
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ツールは README から自動的に抽出されます。メンテナーは ## Tools という見出しの下に記載することで、このタブに反映できます。
An MCP server for Substrate blockchains, written in Rust. It exposes dynamic blockchain operations—querying balances, blocks, pallets, storage, events, and more—via the Model Context Protocol. Designed for developers integrating Substrate data into LLM‑driven tools, dashboards, or monitoring systems.
Clone the repository, place a runtime metadata file at artifacts/metadata.scale, create a .env file with RPC_URL and SIGNING_KEYPAIR_HEX variables, then build with cargo build --release and run with cargo run --release. The server communicates via stdio. Integrate with Cursor by adding the binary path to .cursor/mcp.json.
Rust, access to a Substrate node WebSocket endpoint, a valid signing keypair as hex, and a runtime metadata file (`artifacts/metadata.scale`).
Use `subkey generate --scheme Sr25519 --output-type Json`. Use the `secretSeed` field (strip the `0x` prefix if present) for the `SIGNING_KEYPAIR_HEX` environment variable.
Run `subxt metadata -f bytes > artifacts/metadata.scale` from your project root. The file must be named `metadata.scale` and placed in the `artifacts/` directory before building.
After building, add an entry to your project’s `.cursor/mcp.json` with the `command` set to the absolute path of the built binary (e.g., `target/release/substrate-mcp-rs`). Restart Cursor to detect the server.
It provides 14 tools including `query_balance`, `list_pallets`, `send_dynamic_signed_transaction`, `get_latest_events`, `find_extrinsics`, `custom_rpc`, and more.

Model Context Protocol Servers
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