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

DimensionPubChem MCP ServerSearch the PubChem chemical database for compounds, properties, safety data, bioactivity, and cross-references via MCP. STDIO or Streamable HTTP.MCP Toolbox for DatabasesGoogle's official database MCP toolbox — define AI-accessible database tools via config
FMRS59 / 100 · C74 / 100 · B
Reliability10 / 2013 / 20
Security and permissions12 / 2013 / 20
Maintenance10 / 2017 / 20
Documentation14 / 2016 / 20
Setup experience13 / 2015 / 20
Best for
  • Researchers and developers integrating chemical database queries into LLM-driven tools.
  • Those preferring a public hosted endpoint or self-hosting their own MCP server.
  • Teams that want precise control over which database operations an AI can perform, rather than open arbitrary SQL execution
  • Scenarios needing a unified MCP setup across multiple database engines
Not for
  • Clinical applications requiring rich drug interaction coverage (the report covers mostly approved drugs).
  • Use cases needing write access or data ingestion (the server is read-only).
  • Lightweight cases that just want to run a few ad-hoc SQL queries without maintaining a tools.yaml config (a simpler single-database MCP may be a better fit)
Required permissions
  • Reads PubChem public APIs; no authentication required.
  • Optional environment variables for logging/HTTP configuration.
  • Database credentials (username/password/connection string) are supplied via env vars or config
  • A tool's actual permission is whatever SQL statement is defined in tools.yaml — designed for least privilege, but misconfiguration can still over-expose access
Risks and side effects
  • The public hosted instance's availability may vary (not officially affiliated).
  • Deep pagination may incur additional upstream requests and potential rate limits.
  • Error handling depends on remote service reliability.
  • If tools.yaml defines SQL statements that allow unconstrained writes or deletes, the AI could accidentally modify data
  • The prebuilt toolsets (--prebuilt) favor convenience and may expose broader query capability than a specific business actually needs — use a custom tools.yaml in production
Supported clientsClaude Desktop, Cursor, VS CodeClaude Code, Gemini CLI, Zed, Antigravity
Tools100