Blockscout MCP server
online · 100% uptimeProvide AI agents and automation tools with contextual access to blockchain data including balance…
45 stars
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Blockscout tools
Tool list not cached yet. `describe` through the gateway fetches it live.
Public scan report
scanner v0.1.10 · 2026-10-01 · same rubric, same numbers if you re-run it
- –Code scanremote-only server, no package to scann/a
- Live reliabilityremote reachable in 92ms (auth required)20/20
- –Tool poisoningtools not inspected (endpoint requires auth); not countedn/a
- Auth qualityOAuth resource metadata advertised on 40115/15
- Maintenancelast push 24 days ago15/15
- Maintainer identityendpoint served from the registry-verified namespace domain8/10
How Blockscout compares
Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.
- Safety score
- 97/100
- higher than 98% of 48,255 servers
- Uptime
- 100%
- of our recent checks; the typical remote server answers 100%
- Response time
- 324 ms
- faster than 45% of 30,031 servers
- GitHub stars
- 45
- more than 93% of 28,688 servers
Install Blockscout in Claude Code, Cursor or VS Code
claude mcp add --transport http blockscout-mcp-server https://server.smithery.ai/@blockscout/mcp-server/mcp
What the publisher says
From the Blockscout repository's README, as published. We do not edit it. Read it on GitHub
Blockscout MCP Server
The Model Context Protocol (MCP) is an open protocol designed to allow AI agents, IDEs, and automation tools to consume, query, and analyze structured data through context-aware APIs.
This server wraps Blockscout APIs and exposes blockchain data—balances, tokens, NFTs, contract metadata—via MCP so that AI agents and tools (like Claude, Cursor, or IDEs) can access and analyze it contextually.
Key Features:
- Contextual blockchain data access for AI tools
- Multi-chain support via Blockscout PRO API configuration with Chainscout metadata enrichment
- Versioned REST API: Provides a standard, web-friendly interface to all MCP tools. See API.md for full documentation.
- Custom instructions for MCP host to use the server
- Intelligent context optimization to conserve LLM tokens while preserving data accessibility
- Smart response slicing with configurable page sizes to prevent context overflow
- Opaque cursor pagination using Base64URL-encoded strings instead of complex parameters
- Automatic truncation of large data fields with clear indicators and access guidance
- Standardized ToolResponse model with structured JSON responses and follow-up instructions
- Enhanced observability with MCP progress notifications and periodic updates for long-running operations
Enhanced Analysis with Agent Skills
For more powerful and efficient blockchain analysis, install the Blockscout Analysis skill from the agent-skills repository. This skill provides AI agents with structured guidance for execution strategies, response handling, security best practices, and workflow orchestration.
Learn more: See the agent-skills README for full capabilities and installation instructions.
Configuring MCP Clients
Blockscout PRO API Key
Configuring the Blockscout MCP server with an AI agent requires a Blockscout PRO API key. Most of the data tools route their requests through the authenticated Blockscout PRO API gateway, so without a valid key those tools fail fast before making any upstream request.
To obtain a key, register on the Blockscout Developer Portal (the free tier does not require a credit card) and generate an API key; keys are prefixed proapi_. Then supply it when configuring your client, as shown in the sections below.
Claude Setup (Web, Desktop, Cowork) - Recommended
The easiest way to use the Blockscout MCP server with Claude is the official hosted server: a native, managed installation experience with automatic updates and nothing to run yourself. Add it as a Custom Connector with your own PRO API key. Claude sends the key on every request in an x-api-key header, which the server accepts as an alias for its Blockscout-MCP-Pro-Api-Key header.
- Open Claude and go to Customize > Connectors. On Team and Enterprise plans an organization Owner does this under Organization settings > Connectors.
- Click Add custom connector. Set the name to Blockscout and the URL to https://mcp.blockscout.com/mcp, then continue.
- Leave Authentication as None (Claude detects it). A warning that the connector has no credentials is expected: the key is supplied in the next step.
- Open Request headers, select x-api-key from the list, and paste your PRO API key as the value. Pick exactly this name; the server does not read the other similar-looking names in the list.
- Click Add.
Shortened. The full README is on GitHub.
Nothing above is checked by us. What we check is on the safety report.
Blockscout: common questions
- Is Blockscout MCP server safe?
- Yes, by our scan: it is graded A (97/100). Read the Blockscout safety report
- How do I install Blockscout?
- It runs remotely at server.smithery.ai. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
- Does Blockscout need an API key?
- No key to paste: it signs you in with OAuth when your client connects.
- Is Blockscout maintained?
- The last commit was 57 days ago (2026-09-08). The latest release is v1.13.1.
- Is Blockscout up?
- 100% of our last 28 checks got an answer. We check remote servers about four times a day.
- How does Blockscout compare with other MCP servers?
- safety score 97/100 (higher than 98% of 48,255 servers); uptime 100% (of our recent checks; the typical remote server answers 100%); response time 324 ms (faster than 45% of 30,031 servers). Full comparison.