Properties
| Name | Type | Description |
|---|---|---|
| id | string | Unique identifier for this call. |
| organization_id | string | Organization that placed or received this call. |
| from_e164 | string | Caller-id phone number used, E.164 format. |
| to_e164 | string | Recipient phone number, E.164 format. |
| direction | string | 'outbound' for calls Hail placed, 'inbound' for calls received. |
| agent_id | object | Agent that answered (inbound) or placed (outbound) this call. Null when the call was placed with an inline system_prompt. |
| status | string | Current call-progress state: 'queued', 'dialing', 'ringing', 'in_progress', or one of the terminal states 'completed', 'failed', 'busy', 'no_answer', 'canceled'. |
| end_reason | object | Machine-readable reason the call reached a terminal status (e.g. 'normal_hangup', 'user_rejected', 'sip_trunk_failure'). Null while the call is still in progress. |
| provider_call_sid | object | The telephony provider's identifier for this call leg, if assigned. |
| livekit_room | object | Name of the LiveKit room hosting this call's media session, if one was created. |
| initial_prompt | object | The system_prompt this call was created with, if any. |
| recording_enabled | boolean | Whether the recording-enabled call rate applies, regardless of capture outcome. |
| recording_status | string | disabled, requested, starting, recording, processing, ready, unavailable, failed, or erased. |
| recording_duration_ms | object | Duration of captured audio, independent of billed call duration. |
| recording_s3_key | object | Internal storage key for the call recording. Not a directly fetchable URL. |
| requested_at | string | When the call was requested, ISO 8601 timestamp. |
| started_at | object | When dialing began, ISO 8601 timestamp. Null until the call starts. |
| answered_at | object | When the callee answered, ISO 8601 timestamp. Null if never answered. |
| ended_at | object | When the call ended, ISO 8601 timestamp. Null while still in progress. |
| failure_message | object | Human-readable explanation for a failed call. Null for other statuses. |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://artifacts.apis.io/hail-so/json-schema/hail-so-call-response-schema.json",
"title": "CallResponse",
"x-generated": "2026-11-11",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/hail-so-openapi.json#/components/schemas/CallResponse",
"properties": {
"id": {
"type": "string",
"format": "uuid",
"title": "Id",
"description": "Unique identifier for this call."
},
"organization_id": {
"type": "string",
"format": "uuid",
"title": "Organization Id",
"description": "Organization that placed or received this call."
},
"from_e164": {
"type": "string",
"title": "From E164",
"description": "Caller-id phone number used, E.164 format."
},
"to_e164": {
"type": "string",
"title": "To E164",
"description": "Recipient phone number, E.164 format."
},
"direction": {
"type": "string",
"enum": [
"outbound",
"inbound"
],
"title": "Direction",
"description": "'outbound' for calls Hail placed, 'inbound' for calls received."
},
"agent_id": {
"anyOf": [
{
"type": "string",
"format": "uuid"
},
{
"type": "null"
}
],
"title": "Agent Id",
"description": "Agent that answered (inbound) or placed (outbound) this call. Null when the call was placed with an inline system_prompt."
},
"status": {
"type": "string",
"enum": [
"queued",
"dialing",
"ringing",
"in_progress",
"completed",
"failed",
"busy",
"no_answer",
"canceled"
],
"title": "Status",
"description": "Current call-progress state: 'queued', 'dialing', 'ringing', 'in_progress', or one of the terminal states 'completed', 'failed', 'busy', 'no_answer', 'canceled'."
},
"end_reason": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "End Reason",
"description": "Machine-readable reason the call reached a terminal status (e.g. 'normal_hangup', 'user_rejected', 'sip_trunk_failure'). Null while the call is still in progress."
},
"provider_call_sid": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Provider Call Sid",
"description": "The telephony provider's identifier for this call leg, if assigned."
},
"livekit_room": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Livekit Room",
"description": "Name of the LiveKit room hosting this call's media session, if one was created."
},
"initial_prompt": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Initial Prompt",
"description": "The system_prompt this call was created with, if any."
},
"recording_enabled": {
"type": "boolean",
"title": "Recording Enabled",
"description": "Whether the recording-enabled call rate applies, regardless of capture outcome.",
"default": false
},
"recording_status": {
"type": "string",
"title": "Recording Status",
"description": "disabled, requested, starting, recording, processing, ready, unavailable, failed, or erased.",
"default": "disabled"
},
"recording_duration_ms": {
"anyOf": [
{
"type": "integer"
},
{
"type": "null"
}
],
"title": "Recording Duration Ms",
"description": "Duration of captured audio, independent of billed call duration."
},
"recording_s3_key": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Recording S3 Key",
"description": "Internal storage key for the call recording. Not a directly fetchable URL."
},
"requested_at": {
"type": "string",
"format": "date-time",
"title": "Requested At",
"description": "When the call was requested, ISO 8601 timestamp."
},
"started_at": {
"anyOf": [
{
"type": "string",
"format": "date-time"
},
{
"type": "null"
}
],
"title": "Started At",
"description": "When dialing began, ISO 8601 timestamp. Null until the call starts."
},
"answered_at": {
"anyOf": [
{
"type": "string",
"format": "date-time"
},
{
"type": "null"
}
],
"title": "Answered At",
"description": "When the callee answered, ISO 8601 timestamp. Null if never answered."
},
"ended_at": {
"anyOf": [
{
"type": "string",
"format": "date-time"
},
{
"type": "null"
}
],
"title": "Ended At",
"description": "When the call ended, ISO 8601 timestamp. Null while still in progress."
},
"failure_message": {
"anyOf": [
{
"type": "string"
},
{
"type": "null"
}
],
"title": "Failure Message",
"description": "Human-readable explanation for a failed call. Null for other statuses."
}
},
"type": "object",
"required": [
"id",
"organization_id",
"from_e164",
"to_e164",
"direction",
"status",
"end_reason",
"provider_call_sid",
"livekit_room",
"initial_prompt",
"recording_s3_key",
"requested_at",
"started_at",
"answered_at",
"ended_at"
]
}
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