| FMRS | 66 / 100 · C | 80 / 100 · B | 79 / 100 · B |
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| Reliability | 9 / 20 | 14 / 20 | 12 / 20 |
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| Security and permissions | 14 / 20 | 16 / 20 | 16 / 20 |
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| Maintenance | 12 / 20 | 17 / 20 | 18 / 20 |
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| Documentation | 18 / 20 | 15 / 20 | 18 / 20 |
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| Setup experience | 13 / 20 | 18 / 20 | 15 / 20 |
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| 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
| - Developers auditing NPM dependencies within AI workflows
- Teams performing supply chain security assessments
- Users of Claude Desktop, Cursor, or VS Code
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| 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)
| - Projects outside the NPM ecosystem (e.g., pure Python/Go)
- Environments without network access to deps.dev, OSV.dev, and the npm registry
- Scenarios requiring maintenance by an official upstream vendor
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| 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
| - Network access to the NPM registry and external services (deps.dev, OSV.dev, OpenSSF, npms.io, GitHub)
- Read access to workspace lockfiles (pnpm-lock.yaml, package-lock., yarn.lock) for cache invalidation
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| 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
| - Third-party READMEs and changelogs are untrusted external content; they are wrapped in tags with _meta flags but should still be handled cautiously
- Depends on availability and accuracy of external services
- Batch requests are capped at 25 packages to prevent registry enumeration; larger sets require batching
- Third-party open source project, not officially maintained by NPM or Anthropic
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| Supported clients | Claude Desktop, Claude Code, Claude (Web) Connectors Directory, ChatGPT Apps, Codex App, Codex CLI, Cursor | Claude Code, VS Code, Cursor, Cline, Amp | Claude Desktop, VS Code, Cursor, Smithery.ai |
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| Tools | 16 | 2 | 19 |
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