How to Let AI Coding Agents Query Your Database Without Sharing Credentials

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Developers can now connect AI agents like Claude Code and Cursor to live databases without exposing raw credentials, using a tool called Termalin and its built-in MCP server. Termalin acts as a local intermediary, keeping database credentials in its own vault while allowing agents to run read-only queries through a controlled interface. Database access for agents is disabled by default and requires an explicit opt-in within Termalin's Settings, and write access must be granted separately on a per-connection basis. The setup works by having the agent communicate with the locally running Termalin desktop app via a stdio MCP server, meaning both must reside on the same machine. This approach lets agents answer real-time database questions — such as diagnosing a drop in signups or finding stuck orders — without the security risk of passing a full connection string through a model's context.

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ProgrammingDEV Community ·

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