# Tool

[5 · Act](/category/act/)

| Tool |
| --- |
| Category | [Act](/category/act/) |
| Also known as | MCP tool |
| Related | [Model Context Protocol](/protocols/mcp/) |

[Act](/category/act/) In MCP, a named, schema-described function that a server exposes for a model to call.

## Instances

Not applicable.

## See also

- [Model Context Protocol](/protocols/mcp/)

## References

- [https://modelcontextprotocol.io/specification/2026-07-28/index](https://modelcontextprotocol.io/specification/2026-07-28/index) (2026-10-15) VERIFIED

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