> ## Documentation Index
> Fetch the complete documentation index at: https://agentclientprotocol.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Tool Call Names are stabilized

> Optional programmatic tool-call names are now part of the stable ACP protocol surfaces.

**Published:** September 17, 2026

The [Tool Call Name RFD](/rfds/tool-call-name) has moved to Completed,
stabilizing the optional `name` field on tool calls.

For protocol details, see [v1 Tool Calls](/protocol/v1/tool-calls) and
[v2 Tool Calls](/protocol/v2/tool-calls).