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Introduction
Authentication and keys

Quick starts

HTTP quick starts
Your first Agent
Place a web Call
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Knowledge for an Agent

Calls

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The Call trace
Outcomes and analyses

Agents

Tools and the events channel
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Statecharts and Workflows

Integrations

Integrations

API reference

Overview
Error codes
Event types
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Contracts versions

Resources

WhatIfStage

The pipeline stage a what-if swaps (1.57.0).

An enumeration of 3 values.

Values

stt
llm
tts

Reference: contracts 1.65.0. Phase 0 host: 1.65.0.

Vocal developer docs, built from released public artifacts only. The reference is generated from @vocalai/contracts 1.65.0; the serving state is as recorded on 2026-10-25.