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# MCP server: tool permissions for members and API keys

Owners can control which MCP tools connected assistants can use from **Config > PLATFORM > MCP server**. The server enforces these permissions in every MCP client.

## What Owners can set

Global settings limit tools for everyone, including Owners and API keys. With individual settings, an Owner can also give specific team members or API keys fewer tools. An Owner can change many members or keys at once and choose starting tools for new members.

## Effect on existing access

Existing connections keep their access until an Owner saves restrictions. When an Owner first enables individual settings, existing members and API keys keep their tools. With individual settings enabled, a new API key has no MCP tools until an Owner allows them.

See [Tool permissions](/mcp/introduction/tool-permissions) for setup and limits.