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Introduction
Authentication and keys

Quick starts

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

Calls

Web Calls
Phone numbers
The Call trace
Outcomes and analyses

Agents

Tools and the events channel
Policies
Knowledge bases
Prompt templates
Statecharts and Workflows

Integrations

Integrations

API reference

Overview
Error codes
Event types
Scopes
Contracts versions

Resources

BreakerState

The Connector's circuit breaker when the Run started (1.60.0; integrations.md section 13).

An enumeration of 3 values.

Values

closed
open
half_open

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.