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

DimensionDirectus Content MCP ServerLet LLMs interact directly with your Directus data.MCP ClickHouseConnect ClickHouse to your AI assistantsChEMBL MCP ServerUnofficial MCP server providing advanced access to the ChEMBL chemical database
FMRS70 / 100 · B79 / 100 · B75 / 100 · B
Reliability10 / 2012 / 2012 / 20
Security and permissions15 / 2018 / 2016 / 20
Maintenance12 / 2017 / 2014 / 20
Documentation18 / 2017 / 2018 / 20
Setup experience15 / 2015 / 2015 / 20
Best for
  • Content teams already on Directus who want to read and write content via LLMs
  • Analysts querying Directus data with natural language
  • Directus projects wanting controlled, guardrailed data access for non-developers
  • Teams already using ClickHouse who want AI assistants to access data directly.
  • Scenarios requiring fast, read-only data queries and schema exploration.
  • Drug discovery and computational chemistry researchers
  • Bioinformatics teams needing ChEMBL data through AI assistants
  • Developers comfortable with Node.js or Docker
Not for
  • Projects not using Directus
  • Developers needing full destructive/admin operations on dev instances (field and collection deletion is intentionally limited)
  • Clients that do not support MCP
  • Scenarios requiring write access to the database without explicit opt-in.
  • Production environments with stringent security requirements that avoid default permission settings.
  • Production settings requiring official ChEMBL support (this is unofficial)
  • Users without a Node.js or Docker environment
  • General database tasks unrelated to ChEMBL
Required permissions
  • Requires the Directus instance URL plus a static token or email/password credentials
  • Actions are limited by the permissions of the associated Directus user
  • Requires read-only access to ClickHouse database (default).
  • Optional: write access via CLICKHOUSE_ALLOW_WRITE_ACCESS.
  • Optional: destructive operations via CLICKHOUSE_ALLOW_DROP.
  • Outbound network access to https://www.ebi.ac.uk/chembl/api/data
  • Read-only access to public API data; no authentication credentials required
Risks and side effects
  • Has write access to create, update, and delete items and fields, so misconfiguration can still modify data
  • Leaked credentials grant LLM access to Directus data
  • While field/collection deletion is limited, item deletion remains available
  • If write access is enabled, AI might make unintended modifications.
  • If DROP access is enabled, data deletion could occur accidentally.
  • Credentials may be exposed via environment variables.
  • Unofficial project with license marked NOASSERTION (README claims MIT); verify licensing yourself
  • Data accuracy depends on the ChEMBL REST API and the server's parsing may contain defects
  • 30-second request timeouts may constrain large batch queries
  • README inconsistency on tool count (22 vs 27) raises documentation reliability concerns
Supported clientsClaude Desktop, CursorClaude DesktopClaude Desktop
Tools21427