subql
SubQuery is an Open, Flexible, Fast and Universal data indexing framework for web3. Our mission is to help developers create the decentralised products of the future.
SubQL MCP server enables AI assistants and LLM-powered development environments to create, build, and deploy blockchain data indexing projects across multiple Web3 networks. This MCP integration brings SubQuery's universal data indexing framework—which supports Polkadot, Ethereum, Cosmos, Algorand, NEAR, Stellar, Solana, Starknet, and Concordium—directly into AI-powered workflows. Developers can leverage AI agents to query and extract blockchain data from any supported network, build decentralized applications, and publish indexing projects to the SubQuery Network without managing infrastructure.
Key Features
Use Cases
- 01Building Web3 dApp backends by indexing on-chain data through AI-assisted development workflows
- 02Querying and extracting blockchain data from multiple networks simultaneously for cross-chain analytics
- 03Creating decentralized data indexing projects with AI guidance in Cursor or other LLM-powered IDEs
- 04Publishing blockchain indexers to the SubQuery Network for reliable, distributed data access
- 05Developing multi-chain NFT or DeFi applications that require data from various blockchain ecosystems
- 06Prototyping and deploying custom blockchain data APIs without manual infrastructure setup
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subql — FAQ
What is the SubQL MCP server?+
The SubQL MCP server is a Model Context Protocol integration that brings SubQuery's blockchain data indexing framework into AI assistants and LLM-powered development environments. It enables AI agents to create, build, and deploy indexing projects across multiple Web3 networks including Ethereum, Polkadot, Cosmos, and others.
How do I install the SubQL MCP server in Cursor or Claude Desktop?+
You can use the one-click install badges for Cursor or VS Code, or manually add the configuration to your MCP settings JSON file. The command is 'npx -y @subql/cli mcp' with the appropriate configuration structure for your client.
Which AI clients work with the SubQL MCP server?+
The SubQL MCP server works with Cursor, VS Code (with Cline or similar MCP-compatible extensions), and any other MCP-compatible AI development environment. It is designed for LLMs and AI IDEs that support the Model Context Protocol.
Do I need API keys or blockchain node access to use SubQL MCP?+
For basic project creation and building through the MCP interface, you don't need API keys. However, to run your own indexer locally, you'll need a Postgres database and access to blockchain node data for the networks you want to index. Publishing to the SubQuery Network may require network-specific credentials.
Is the SubQL MCP server free to use?+
Yes, the SubQL MCP server and CLI tools are open source and free to use. The SubQuery Network offers decentralized hosting, and there are also managed hosting partners available for deployment, with pricing varying by provider.
Which blockchain networks does SubQL support?+
SubQL supports Polkadot and Substrate networks, Ethereum and all EVM-compatible chains, Cosmos and CosmWasm networks, Algorand, NEAR, Stellar (including Soroban), Solana (beta), Starknet, and Concordium. You can also index data from multiple networks simultaneously in a single project.
How do I install subql?+
Open the source repository on GitHub and follow its README. subql is a mcp server — MCP Agents Market links you directly to the official repo.
Is subql free?+
subql is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.