MCP server

Subtensor MCP Official

com.subtensor/reference

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Subtensor blockchain reference — events, calls, storage, constants, errors for all 28 active pallets

Working at last checkVerified publisher: subtensor.comAbout 3,327 tokens per request once connected7 tools

https://subtensor.com/mcp

At a glance

Type: MCP server
Publisher: subtensor.com (verified by the MCP Registry)
Status: Working at last check
Tools: 7
Token cost: About 3,327 tokens per request
Sets up in: Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok
Last checked: 25 Oct 2026, 20:29 UTC

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http reference https://subtensor.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.reference]
url = "https://subtensor.com/mcp"

Gemini CLI

{"mcpServers":{"reference":{"httpUrl":"https://subtensor.com/mcp"}}}

Cursor

{"mcpServers":{"reference":{"url":"https://subtensor.com/mcp"}}}

VS Code

{"servers":{"reference":{"type":"http","url":"https://subtensor.com/mcp"}}}

Antigravity

agy mcp add reference https://subtensor.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"reference","server_url":"https://subtensor.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"reference","server_url":"https://subtensor.com/mcp"}

subtensor_decode ~342 tokens
Decode SCALE-encoded hex into labelled fields with RAO→TAO and hex→SS58 conversions applied. Omit pallet and name to identify an event or call from its two-byte (pallet index, item index) prefix — the usual case when you have bytes and want to know what they are.
subtensor_explain ~514 tokens
Understand Bittensor concepts, workflows, mechanisms, runtime APIs, runtime errors, extrinsic format, or get code examples.
subtensor_explore ~384 tokens
Explore relationships, version history, removed items, changelogs, and migration guides between runtime versions.
subtensor_list ~622 tokens
Browse items by category: pallets, events, calls, storage, constants, errors, types, runtime APIs, RPC methods, protocol accounts, EVM precompiles, mechanisms, workflows, hyperparameters, cli_flags, build_features, chain_specs, or env_vars.
subtensor_lookup ~851 tokens
Get detailed info about a specific pallet, event, call, storage item, constant, error, SCALE type, RPC method, protocol account, or EVM precompile. Accepts URN identifiers with optional #field.path drilling.
subtensor_preferences ~342 tokens
Get or set session preferences for language, node URL, and node type. Language affects field name casing (TypeScript=camelCase, others=snake_case) and code examples.
subtensor_search ~272 tokens
Search across all Subtensor pallets, events, calls, storage, constants, and errors by keyword.

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