Open SourceImportance: Medium
Using FastMCP 3 to build safer MCP servers
r/LLMDevsJul 10, 2026 · 2d ago
FastMCP 3 can be used to build a . The setup includes , hiding tools by user group, audit logs, and S3 s for .
limits use to approved people or systems. Hiding tools by user group means different users only see the actions they are allowed to use.
Audit logs keep a record of what happened. S3 s let files be shared through controlled links instead of making them openly available.
Key points
- FastMCP 3 is used to build a .
- controls who can use the server.
- Tools can be hidden based on user group.
- Audit logs record activity for review later.
- S3 s provide controlled access to files.