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Compare scores, permissions, risks, and fit in one decision-focused table.

DimensionBlockscout MCP ServerExposes Blockscout blockchain data via MCPContext7Upstash's official server providing up-to-date third-party library docs for AI coding assistants
FMRS66 / 100 · C80 / 100 · B
Reliability9 / 2014 / 20
Security and permissions14 / 2016 / 20
Maintenance12 / 2017 / 20
Documentation18 / 2015 / 20
Setup experience13 / 2018 / 20
Best for
  • AI agents and IDE users needing real-time multi-chain blockchain data
  • Blockchain analysts and developers
  • Crypto researchers using Claude, Cursor, ChatGPT, or Codex
  • Developers using fast-moving frameworks/libraries worried about the AI suggesting stale code
  • Scenarios wanting zero-config documentation lookup
Not for
  • Users unwilling to register for a Blockscout PRO API key
  • Scenarios requiring on-chain writes or signing (all tools are read-only queries)
  • Telemetry-sensitive users running community instances without disabling telemetry
  • Looking up internal/private codebase documentation (Context7 targets publicly published open-source libraries)
  • Cases needing very high coverage of obscure, niche libraries (coverage depends on what Context7's platform has indexed)
Required permissions
  • Requires a Blockscout PRO API key (proapi_ prefix) for data access
  • Accesses https://mcp.blockscout.com/mcp over HTTP transport
  • Self-hosted deployments provide the key via the BLOCKSCOUT_PRO_API_KEY environment variable
  • Usable without an API key (subject to a free-tier rate limit); CONTEXT7_API_KEY is an optional credential for higher quota
  • Read-only documentation lookup — no code execution or local filesystem access involved
Risks and side effects
  • PRO API access is metered in credits; tools append advisory notes when the balance drops below a threshold
  • Community instances collect anonymous telemetry by default (tool names, parameters, version, SHA-256 hash of the API key); disable with BLOCKSCOUT_DISABLE_COMMUNITY_TELEMETRY=true
  • The PRO API key must never be committed to version control or embedded in client-shipped binaries
  • Claude Connectors Directory requires a paid Claude plan and may have restrictions due to a shared access key
  • The free tier has limited quota — high-frequency use may hit rate limits
  • Documentation content comes from Context7's platform index, so its accuracy and freshness depend on that platform's crawl cadence
Supported clientsClaude Desktop, Claude Code, Claude (Web) Connectors Directory, ChatGPT Apps, Codex, CursorClaude Code, VS Code, Cursor, Cline, Amp
Tools162