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DimensionMCP Open LibraryA Model Context Protocol server for the Internet Archive's Open Library API enabling AI assistants to search for book and author information.DuckDuckGo Search MCP ServerMCP server providing web search and content fetching via DuckDuckGoBasic MemoryYour AI never forgets again.
FMRS62 / 100 · C74 / 100 · B72 / 100 · B
Reliability10 / 2011 / 2010 / 20
Security and permissions14 / 2015 / 2015 / 20
Maintenance12 / 2017 / 2016 / 20
Documentation14 / 2017 / 2017 / 20
Setup experience12 / 2014 / 2014 / 20
Best for
  • AI assistants or chatbots that want to query book and author information in natural language.
  • Applications needing structured book data integration.
  • Developers needing quick, API-key-free web search capabilities
  • Privacy-conscious users who prefer local search execution
  • AI application development with Claude Desktop or Claude Code
  • Privacy-conscious developers who want local data storage.
  • Researchers who need AI-assisted management of large note collections.
  • Users of Markdown editors like Obsidian.
Not for
  • Comprehensive book catalog management for commercial use, as data comes from a public API and may be incomplete or delayed.
  • Use cases requiring real-time updates or high-frequency polling.
  • Scenarios requiring authentication or access to restricted resources.
  • Enterprise applications requiring high-scale, reliable search APIs
  • Users needing advanced search features like custom ranking or filters
  • Accessing sites blocked by TLS fingerprinting without installing the optional browser backend
  • Users needing cloud sync and mobile access (unless using the paid cloud service).
  • Minimalists who want zero configuration.
  • Scenarios requiring large-scale vector databases and complex retrieval (local SQLite may be insufficient).
Required permissions
  • Access to the Open Library public API (no authentication).
  • Communication via STDIO transport with MCP clients.
  • Outbound network access to DuckDuckGo and other websites
  • Reads environment variables for SafeSearch, region, and CA certificates
  • Optionally reads a CA certificate file (for TLS-intercepting proxies)
  • Read and write to the local filesystem (default: ~/basic-memory).
  • Perform file and directory operations (create, edit, delete).
  • Access local SQLite database (or Postgres/Milvus if configured).
Risks and side effects
  • Dependency on external API; service may be unavailable due to network issues or API changes.
  • Data may be outdated or incomplete.
  • No rate limiting implemented; excessive requests could trigger Open Library restrictions.
  • Search endpoints may occasionally return empty results or errors, especially when blocked
  • Content fetching may be subject to SSRF protection, blocking private or loopback addresses by default
  • Misuse could lead to rate limiting or IP blocking
  • Tools have write operations that may unintentionally modify or delete notes.
  • Edit operations may overwrite existing content, though there are protections.
  • Semantic search and reranking features may require model downloads, adding latency.
  • Local data backups are the user's responsibility.
Supported clientsClaude DesktopClaude Desktop, Claude CodeClaude Desktop, Claude Code, Codex CLI, Cursor, VS Code, ChatGPT, Obsidian
Tools6221