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Need to Know: Implementing row-level security for Claude Dashboards via Model Context Protocol
Row-level security in Claude Dashboards can be enforced via Model Context Protocol servers interacting with DuckDB.
What: The author uses an MCP server as an authentication and query middleware to restrict user access to data within DuckDB before the result is passed to Claude for visualization.
Why it matters: This architecture demonstrates how to secure LLM-integrated dashboards by handling access control at the data layer rather than relying on prompt-level restrictions.
Decoder
- Model Context Protocol (MCP): A standard for connecting AI assistants to systems, databases, and tools.
Original article
This proof of concept shows how to add row-level security to Claude Dashboards using an MCP server to authenticate users and query DuckDB for only the data they can access. Access rules are enforced before data reaches Claude, allowing the same dashboard to show different results for each user.
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