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

DimensionCrawlieFast, free, open-source website audit MCP server for technical SEO and Generative Engine Optimization (GEO).MartinLoop MCP ServerAn independent control layer that gives AI coding agents budgets, brakes, and receipts
FMRS50 / 100 · D79 / 100 · B
Reliability8 / 2012 / 20
Security and permissions9 / 2018 / 20
Maintenance8 / 2016 / 20
Documentation12 / 2018 / 20
Setup experience13 / 2015 / 20
Best for
  • Developers and marketers needing a free, local-first SEO/GEO audit tool.
  • Teams wanting to integrate website audits into agent workflows.
  • Users needing CI/CD integration and structured JSON output.
  • SEO professionals aiming to optimize for AI search (like ChatGPT, Perplexity).
  • Engineering teams scaling AI coding agents while controlling spend
  • Platform teams that need auditable, rollback-aware agent execution records
  • Organizations using multiple agents (Claude, Codex, Gemini) under one governed flow
Not for
  • Users requiring enterprise support or a hosted cloud service (Crawlie Cloud is closed-source).
  • Users needing additional plugin ecosystems beyond the 57 built-in rules.
  • Beginners who prefer a pure GUI and no CLI or agent interaction (desktop app available but separate download).
  • Developers who just want a simple code-completion helper without run governance
  • Teams unwilling to accept local JSONL run records with HMAC signing
  • Environments without a supported adapter (Claude/Codex/Gemini CLIs, direct provider, or verifier-only)
Required permissions
  • Local network access to crawl target websites.
  • Execution of the binary (installed automatically via npm).
  • For hosted endpoint: API key and network access.
  • Read/write access to the configured repo root (writable scope restrictable via --allow-path/--deny-path)
  • Ability to invoke the chosen agent CLI (Claude/Codex/Gemini, etc.) and its underlying model account
  • Local disk writes for run records, receipts, and share outputs (share/run-receipt., etc.)
  • Execution of user-configured verifier commands (e.g. npm test)
Risks and side effects
  • Crawling websites may violate their robots.txt or terms of service; ensure you have permission to crawl the target site.
  • The MCP server is open-source and may not have undergone extensive security audits; assess your own risk.
  • For hosted services, your data is sent to Crawlie's servers; be aware of privacy implications.
  • Verifier commands are executed; poorly chosen verifier commands carry security risk despite preflight policy checks
  • Cost and token figures may be estimates (labeled with provenance) and should not be treated as settled accounting
  • Receipt integrity must be verified before use as trustworthy evidence; missing rollback evidence is flagged as EVIDENCE_BOUNDARY
  • Policy defaults come from martin.config.yaml and can be overridden by CLI flags; misconfiguration can loosen safety boundaries
Supported clientsClaude Desktop, Claude Code, Cursor, ClineClaude Code, Codex, Gemini CLI, Cursor, VS Code, GitHub Copilot, Continue
Tools120