Blockscout MCP Server
Blockscout's official server for explorer data — balances, tokens, NFTs and contract metadata across many chains.
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Official- Transport
- http
- Runtime
- Python
- Auth
- Required
- Stars
- 43
Block explorer APIs return objects far larger than a context window enjoys, and that is the problem this server spends most of its design on. Responses are sliced with configurable page sizes, oversized fields are truncated with an explicit marker telling the model how to fetch the rest, and pagination uses opaque Base64URL cursors rather than a pile of query parameters the model would have to assemble correctly. Every tool returns the same structured ToolResponse shape with follow-up instructions attached. Multi-chain coverage and Chainscout metadata enrichment come through the Blockscout PRO gateway, so a PRO API key is required — most data tools fail fast without one rather than sending an unauthenticated request upstream.
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