1scan – Unified Blockchain Explorer API Gateway & MCP Server

1scan solves a common pain point for developers building AI‑powered tools that need to query blockchain data: the fragmentation of explorer APIs. Each major network—Ethereum, BSC, Polygon, Arbitrum, Optimism, and dozens of others—offers its own API with slightly different endpoints, rate limits, and authentication schemes. Managing these individually requires duplicate code, constant updates when APIs change, and a lot of boilerplate for key handling. 1scan abstracts all that complexity behind a single, well‑documented gateway and exposes it as an MCP server, allowing AI assistants such as Claude to retrieve blockchain information with a consistent set of tools and prompts.

The server delivers two complementary components. The API gateway consolidates the endpoints of over 40 explorers into one unified interface, handling authentication (API keys per network), routing, and response normalization. The MCP server then turns this gateway into a first‑class tool for AI assistants: the assistant can invoke “getTransaction”, “getBlockInfo”, or “searchAddress” without worrying about which network’s quirks to manage. By packaging the logic as an MCP server, 1scan integrates seamlessly into any workflow that already supports the Model Context Protocol—be it a conversational IDE, an automated research bot, or a compliance monitoring system.

Key capabilities include:

• Network agnostic querying – Specify a chain ID or network name, and the server automatically selects the correct explorer endpoint.
• Rate‑limit shielding – The gateway aggregates requests and distributes them across multiple API keys if configured, protecting against throttling.
• Structured responses – All data is returned in a uniform JSON schema, simplifying downstream processing by the AI model.
• Extensible toolset – New explorer APIs can be added with minimal configuration, and custom prompts or sampling strategies can be attached to the MCP server.

Typical use cases span from decentralized finance (DeFi) analytics—where an AI assistant can pull real‑time liquidity metrics across chains—to smart contract audit assistants that fetch transaction histories and code verification status. Compliance teams can employ the server to monitor cross‑chain activity, while educational tools can let students query block data through conversational interfaces. Because the MCP integration handles authentication and schema translation automatically, developers can focus on higher‑level logic rather than plumbing.

In summary, 1scan turns the fragmented world of blockchain explorers into a single, AI‑friendly API surface. Its MCP server abstraction empowers developers to build intelligent assistants that can ask for, retrieve, and reason about blockchain data across dozens of networks with minimal effort.