> ## Documentation Index > Fetch the complete documentation index at: https://docs.vatel.ai/llms.txt > Use this file to discover all available pages before exploring further. # Eavesdrop > Listen to a live call and send supervisor commands. Connect with the JWT from `POST /v1/calls/{callId}/eavesdrop-token` via `Authorization: Bearer {token}` or `?token={token}`. The call id is embedded in the token. ## AsyncAPI ````yaml asyncapi.json eavesdrop id: eavesdrop title: Eavesdrop description: >- Listen to a live call and send supervisor commands. Connect with the JWT from `POST /v1/calls/{callId}/eavesdrop-token` via `Authorization: Bearer {token}` or `?token={token}`. The call id is embedded in the token. servers: - id: production protocol: wss host: api.vatel.ai bindings: [] variables: [] address: /v1/eavesdrop parameters: [] bindings: [] operations: - &ref_1 id: eavesdropSendToServer title: 'Eavesdrop: send to server' description: Supervisor commands for `/v1/eavesdrop` type: receive messages: - &ref_3 id: EavesdropEndCall contentType: application/json payload: - name: Eavesdrop end call description: Supervisor command to end the monitored call. type: object properties: - name: type type: string description: end_call required: true - name: data type: object required: false headers: [] jsonPayloadSchema: type: object required: - type properties: type: type: string const: end_call x-parser-schema-id: data: type: object x-parser-schema-id: x-parser-schema-id: title: Eavesdrop end call description: Supervisor command to end the monitored call. example: No examples found bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropEndCall - &ref_4 id: EavesdropTransferCall contentType: application/json payload: - name: Eavesdrop transfer call description: Supervisor command to transfer the monitored call. type: object properties: - name: type type: string description: transfer required: true - name: data type: object required: true properties: - name: number type: string description: Destination phone number or SIP URI. required: true - name: transfer_type type: string description: Transfer strategy. Defaults to refer when omitted. enumValues: - bridge - refer - conference required: false headers: [] jsonPayloadSchema: type: object required: - type - data properties: type: type: string const: transfer x-parser-schema-id: data: type: object required: - number properties: number: type: string description: Destination phone number or SIP URI. x-parser-schema-id: transfer_type: type: string enum: - bridge - refer - conference description: Transfer strategy. Defaults to refer when omitted. x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Eavesdrop transfer call description: Supervisor command to transfer the monitored call. example: |- { "type": "", "data": { "number": "", "transfer_type": "" } } bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropTransferCall bindings: [] extensions: &ref_0 - id: x-parser-unique-object-id value: eavesdrop - &ref_2 id: eavesdropReceiveFromServer title: 'Eavesdrop: receive from server' description: Live call stream for `/v1/eavesdrop` type: send messages: - &ref_5 id: EavesdropServerMessage contentType: application/json payload: - name: Eavesdrop server message description: >- Discriminated by type; payload in data. One of: user_audio, agent_audio, input_audio_transcript, response_text, transcript. type: object properties: - name: type type: string enumValues: - user_audio - agent_audio - input_audio_transcript - response_text - transcript required: true headers: [] jsonPayloadSchema: type: object required: - type properties: type: type: string enum: - user_audio - agent_audio - input_audio_transcript - response_text - transcript x-parser-schema-id: data: x-parser-schema-id: x-parser-schema-id: title: Eavesdrop server message description: >- Discriminated by type; payload in data. One of: user_audio, agent_audio, input_audio_transcript, response_text, transcript. example: |- { "type": "" } bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropServerMessage - &ref_6 id: EavesdropUserAudio contentType: application/json payload: - name: Eavesdrop user audio description: User-side audio chunk. type: object properties: - name: type type: string description: user_audio required: true - name: data type: object required: true properties: - name: audio type: string description: Base64-encoded PCM16 mono 24 kHz audio. required: true headers: [] jsonPayloadSchema: type: object required: - type - data properties: type: type: string const: user_audio x-parser-schema-id: data: type: object required: - audio properties: audio: type: string description: Base64-encoded PCM16 mono 24 kHz audio. x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Eavesdrop user audio description: User-side audio chunk. example: |- { "type": "", "data": { "audio": "" } } bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropUserAudio - &ref_7 id: EavesdropAgentAudio contentType: application/json payload: - name: Eavesdrop agent audio description: Agent-side audio chunk. type: object properties: - name: type type: string description: agent_audio required: true - name: data type: object required: true properties: - name: audio type: string description: Base64-encoded PCM16 mono 24 kHz audio. required: true headers: [] jsonPayloadSchema: type: object required: - type - data properties: type: type: string const: agent_audio x-parser-schema-id: data: type: object required: - audio properties: audio: type: string description: Base64-encoded PCM16 mono 24 kHz audio. x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Eavesdrop agent audio description: Agent-side audio chunk. example: |- { "type": "", "data": { "audio": "" } } bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropAgentAudio - &ref_8 id: EavesdropInputAudioTranscript contentType: application/json payload: - name: Eavesdrop input audio transcript description: Interim or final user speech transcript. type: object properties: - name: type type: string description: input_audio_transcript required: true - name: data type: object required: true properties: - name: transcript type: string required: true - name: turn_id type: string required: false - name: is_final type: boolean required: true headers: [] jsonPayloadSchema: type: object required: - type - data properties: type: type: string const: input_audio_transcript x-parser-schema-id: data: type: object required: - transcript - is_final properties: transcript: type: string x-parser-schema-id: turn_id: type: string x-parser-schema-id: is_final: type: boolean x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Eavesdrop input audio transcript description: Interim or final user speech transcript. example: |- { "type": "", "data": { "transcript": "", "turn_id": "", "is_final": true } } bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropInputAudioTranscript - &ref_9 id: EavesdropResponseText contentType: application/json payload: - name: Eavesdrop response text description: Interim or final agent text. type: object properties: - name: type type: string description: response_text required: true - name: data type: object required: true properties: - name: text type: string required: true - name: turn_id type: string required: false - name: is_final type: boolean required: true headers: [] jsonPayloadSchema: type: object required: - type - data properties: type: type: string const: response_text x-parser-schema-id: data: type: object required: - text - is_final properties: text: type: string x-parser-schema-id: turn_id: type: string x-parser-schema-id: is_final: type: boolean x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Eavesdrop response text description: Interim or final agent text. example: |- { "type": "", "data": { "text": "", "turn_id": "", "is_final": true } } bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropResponseText - &ref_10 id: EavesdropTranscriptSnapshot contentType: application/json payload: - name: Eavesdrop transcript snapshot description: >- Initial committed transcript history after the eavesdrop room is ready. type: object properties: - name: type type: string description: transcript required: true - name: data type: object required: true properties: - name: entries type: array required: true properties: - name: role type: string enumValues: - user - agent required: true - name: text type: string required: true - name: turn_id type: string required: false headers: [] jsonPayloadSchema: type: object required: - type - data properties: type: type: string const: transcript x-parser-schema-id: data: type: object required: - entries properties: entries: type: array items: type: object required: - role - text properties: role: type: string enum: - user - agent x-parser-schema-id: text: type: string x-parser-schema-id: turn_id: type: string x-parser-schema-id: x-parser-schema-id: EavesdropTranscriptEntry x-parser-schema-id: x-parser-schema-id: x-parser-schema-id: title: Eavesdrop transcript snapshot description: >- Initial committed transcript history after the eavesdrop room is ready. example: No examples found bindings: [] extensions: - id: x-parser-unique-object-id value: EavesdropTranscriptSnapshot bindings: [] extensions: *ref_0 sendOperations: - *ref_1 receiveOperations: - *ref_2 sendMessages: - *ref_3 - *ref_4 receiveMessages: - *ref_5 - *ref_6 - *ref_7 - *ref_8 - *ref_9 - *ref_10 extensions: - id: x-parser-unique-object-id value: eavesdrop securitySchemes: [] ````