DBHub
Lightweight, zero-dependency MCP server that provides AI clients with safe database access. Supports PostgreSQL, MySQL, MariaDB, SQL Server, and SQLite with safety guardrails including read-only mode, row limiting, and query timeouts. Includes a built-in web workbench for visual interaction.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Multi-database MCP hub. Connection strings contain credentials — use secrets manager. SQL injection risk if untrusted input reaches queries. Use read-only DB users for query agents.
⚡ Reliability
Best When
You want a simple, safe, zero-dependency database MCP server with built-in safety guardrails like read-only mode and row limits.
Avoid When
You need write operations, Oracle/TimescaleDB support, or advanced transaction management.
Use Cases
- • Safe AI-assisted database querying with read-only guardrails
- • Schema exploration and object search across multiple databases
- • Custom parameterized SQL tools defined via TOML config
- • Quick database inspection through built-in web workbench
- • Secure remote database access via SSH tunneling
Not For
- • Write-heavy database operations (designed with read-only safety defaults)
- • NoSQL databases
- • Oracle or TimescaleDB-specific features
Interface
Authentication
Database credentials via DSN string on command line or TOML config. SSH tunnel support for secure remote access. SSL/TLS encryption supported. No MCP-level auth.
Pricing
MIT license. Self-hosted. Backed by Bytebase (database DevOps company).
Agent Metadata
Known Gotchas
- ⚠ Default read-only mode may surprise agents expecting write access
- ⚠ Row limits truncate results silently - agents may not realize data is incomplete
- ⚠ Custom tools via TOML require manual setup outside the MCP flow
- ⚠ Demo mode uses embedded sample data, not real databases
Alternatives
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Scores are editorial opinions as of 2026-03-07.