> ## Documentation Index > Fetch the complete documentation index at: https://docs.teamfollowup.ai/llms.txt > Use this file to discover all available pages before exploring further. > ## Agent Instructions > Use the public API base URL: https://api.teamfollowup.ai/api. > Authenticate public API requests with Authorization: Bearer YOUR_API_KEY. > Use product-owned terms: agents, campaigns, projects (GoHighLevel sub-accounts), contacts, calls, outcomes, skills, cadences, phone numbers. > Scope requests by locationId rather than projectName. > Read the guide linked from each API reference group before recommending an endpoint. # List TFU Live voices > Discover supported TFU Live voices before creating an agent. No existing agent is needed. Uses the same current runtime catalogue and descriptions as the TFU Live voice picker. Only these ids are valid for TFU Live voiceId; do not use the legacy List voices or Search for a voice to add tools. Omit voiceId to use Cedar. Required scope: `agents:read`. Required API key scope: `agents:read`. ## OpenAPI ````yaml /openapi.yaml get /api/tfu-live-agents/voices openapi: 3.1.0 info: title: TFUAI Server API version: 1.0.0 description: >- API reference for the TFUAI SaaS server. All published endpoints are mounted under `/api`. Responses use a standard envelope: `{ "success": true, ... }` on success and `{ "success": false, "error": "..." }` on failure. Product API modules are being launched module by module. This spec currently exposes only contracted public modules. Authenticate public API requests with an API key in the `Authorization` header: `Authorization: Bearer YOUR_API_KEY`. servers: - url: https://api.teamfollowup.ai description: Production API origin. Public API paths are under /api. security: [] tags: - name: Agents description: >- Build the conversation: identity and settings, script, lead context and split testing. - name: Analytics description: >- Understand call volume, pickup, booking and transfer metrics within the selected reporting scope. - name: Billing description: >- Balances, spend, purchases and sub-account rebilling. Reference and guides only; the builder chatbot has no billing playbook. - name: Calls description: >- Review completed calls, recordings, transcripts and campaign run history; distinguish observation from placing a new call. - name: Campaigns description: >- Configure what starts calls, who is eligible, calling windows, caller IDs, activation and the actions that follow each outcome. What runs after a call lands: for each outcome (booked, opted out, asked for a callback…), an ordered chain of actions — tag the contact, move a pipeline stage, send an SMS, book an appointment. Stored as a graph: `nodes` are the actions, `edges` say what follows what, and `dispositionEntries` maps each outcome to the node its chain starts at. **Pick the narrowest endpoint that does the job.** | To | Call | | | --- | --- | --- | | See what fires per outcome | `GET .../workflow?view=summary` | Reads as plain text, no graph walking | | Add steps to an outcome | `POST .../outcomes/{outcome}/nodes` | Server derives node ids, edge ids, handles, layout | | Change a message, tag or setting | `PATCH .../workflow` | Merges; carries no graph, so it cannot damage one | | Remove one step | `DELETE .../nodes/{nodeId}` | Also re-links the chain around it | | Author or replace the whole graph | `PUT .../workflow` | Replaces everything you send | `PUT` is the only one that can re-wire, position nodes, build an `if`, save an unconfigured draft, or copy a whole workflow — and the only one that can overwrite a change someone else made after you read it. Use it when you are genuinely authoring the graph, and send `expectedVersion` when you do. For everything else the narrower endpoints are both easier and safer. - name: Contacts description: >- Find contacts and their calls, manage do-not-call status and identify internal contacts excluded from reporting. - name: In-call Capabilities description: >- Configure actions and instructions the agent uses during a live call: booking, transfers, lookups and custom skills. - name: Master agent description: >- Run a shared agent and campaign across linked projects; manage inheritance, local bindings, synchronization and rollout readiness. - name: Native Calendar description: >- The diary of a sub-account with no CRM: its bookable calendars, the free slots they offer, and the appointments on them. Availability is computed per request against live bookings and is never cached, because a cached slot is one somebody else has already taken. - name: Native Contacts description: >- The people a sub-account with no CRM calls, and the fields it keeps on them. This is the system of record for those contacts: there is nowhere else they exist. A sub-account with a CRM keeps its contacts there and every operation here answers 400 for it. - name: Phone Numbers description: >- Find and manage caller IDs, assign numbers to campaigns and understand connected Twilio numbers. - name: Projects description: >- Understand project ownership, inspect configuration and validate the local resources used by a campaign. - name: TFU Live description: >- Configure instructions, conversation style, workflows, Chat and call handling, then test and go live. - name: Voices description: >- Browse the voice catalogue and select a voice; configure speech and listening behavior in Agents. paths: /api/tfu-live-agents/voices: get: tags: - TFU Live summary: List TFU Live voices description: >- Discover supported TFU Live voices before creating an agent. No existing agent is needed. Uses the same current runtime catalogue and descriptions as the TFU Live voice picker. Only these ids are valid for TFU Live voiceId; do not use the legacy List voices or Search for a voice to add tools. Omit voiceId to use Cedar. Required scope: `agents:read`. Required API key scope: `agents:read`. operationId: get-tfu-live-agents-voices parameters: - name: locationId in: query required: true schema: type: string description: >- Sub-account belonging to the authenticated agency and any narrower credential location binding. responses: '200': description: >- Successful TFU Live response. Setup acceptance is not verified readiness or campaign activation. content: application/json: schema: type: object required: - success - data properties: success: const: true data: type: object required: - runtime - defaultVoiceId - voices additionalProperties: false properties: runtime: const: tfu_live defaultVoiceId: type: string voices: type: array items: type: object required: - id - displayName additionalProperties: false properties: id: type: string displayName: type: string description: type: string gender: type: string accent: type: string language: type: string source: type: string additionalProperties: false example: success: true data: runtime: tfu_live defaultVoiceId: cedar voices: - id: cedar displayName: Cedar description: Open and upbeat '400': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: locationId is required. code: invalid_request '401': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: Unauthorized message: Access token is required. Please login '403': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: InsufficientScope message: This API key does not have the required scope. requiredScope: agents:write '404': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: Agent not found. code: not_found '409': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: The agent changed. Read the current version before saving. code: conflict '422': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' examples: invalid_workflow: value: success: false error: Choose the tag this node checks. code: invalid_workflow workflowId: wf_account1 stepId: check workflow_resource_not_found: value: success: false error: Choose an active calendar verified for this sub-account. code: workflow_resource_not_found workflowId: wf_book0001 stepId: slots field: routing[1].calendarId workflow_secret_refused: value: success: false error: >- The saved value of the Authorization header was saved for https://api.example.com; this webhook now sends to https://collector.example.net, so enter the value again. code: workflow_secret_refused workflowId: wf_account1 stepId: lookup field: headers.Authorization invalid_agent: value: success: false error: >- Choose an agent id using up to 100 letters, digits, underscores or hyphens. code: invalid_agent setup_incomplete: value: success: false error: >- Fill what this agent still needs before it is set up: Book appointment: Choose the calendar to search. code: setup_incomplete workflowId: wf_book0001 stepId: slots field: calendarId setupItems: - kind: workflow_setting workflowId: wf_book0001 workflowName: Book appointment stepId: slots node: find_slots field: calendarId message: Choose the calendar to search. '429': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: TooManyRequests message: Too many write requests, please slow down. '502': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: TFU Live request failed. code: provider_unavailable '503': description: >- TFU Live request rejected: { success: false, error, code, workflowId?, stepId?, field?, setupItems? }. Read the error and current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: TFU_LIVE_CAMPAIGN_PENDING code: TFU_LIVE_CAMPAIGN_PENDING message: >- The agent draft was saved. Retry creation with the same agent id and original body to finish attaching its campaign. security: - ApiKeyAuth: [] x-codeSamples: - lang: bash label: cURL source: |- curl --request GET \ --url https://api.teamfollowup.ai/api/tfu-live-agents/voices \ --header 'Authorization: Bearer YOUR_API_KEY' components: schemas: TfuLiveError: type: object required: - success - error properties: success: const: false error: type: string description: >- What to do about it, in words. A status-wide gate (authentication, scope, rate limit) may use its own error name with a message. code: type: string enum: - invalid_workflow - setup_incomplete - workflow_resource_not_found - workflow_resource_unavailable - workflow_secret_refused - invalid_agent - invalid_request - unauthorized - insufficient_balance - forbidden - not_found - conflict - too_large - provider_unavailable - internal_error - AGENT_OPERATION_UNSUPPORTED - TFU_LIVE_CAMPAIGN_PENDING - TFU_LIVE_CAMPAIGN_REFUSED description: >- The kind of refusal: invalid_workflow (a workflow’s structure or a node’s settings), setup_incomplete (a setting still to fill or a Brain template placeholder still in the prompt, where the agent must be complete: preparing it, or a save that sets it up; setupItems lists every one), workflow_resource_not_found (a calendar, custom field, pipeline stage, team or rep the sub-account lacks, or an inactive calendar), workflow_resource_unavailable (503: the sub-account’s resources could not be read; retry), workflow_secret_refused (a secret header rule), invalid_agent (any other part of the agent), else by status. TFU_LIVE_* names a product state. workflowId: type: string description: >- The workflow a workflow refusal is about. Absent on a workflow being created, which has no id yet. stepId: type: string description: The step inside it. field: type: string description: >- The setting inside the step: calendarId, routing[1].calendarId, items[0].field, destination.teamId, headers.Authorization; brain.prompt for a placeholder. On a create from a Brain template, the request value: values., values or brainTemplateId. setupItems: type: array items: type: object required: - kind - message additionalProperties: false description: >- Something the agent still needs before it can be prepared for real calls. properties: kind: type: string enum: - workflow_setting - prompt_placeholder description: >- workflow_setting: a setting still to fill (a calendar, a tag, who takes a transfer, zip codes, a choice’s answers, an item’s label); prompt_placeholder: a Brain template [bracketed] placeholder still in the prompt (legacy: templates no longer hold any). workflowId: type: string workflowName: type: string stepId: type: string node: type: string description: The node type. field: type: string description: >- The setting inside the step (calendarId, destination, items[0].choices), or brain.prompt. placeholder: type: string message: type: string description: What to do, in words. description: >- On setup_incomplete: everything the agent still needs, the first of which the refusal names. additionalProperties: {} securitySchemes: ApiKeyAuth: type: http scheme: bearer bearerFormat: API key description: 'Send your API key as `Authorization: Bearer YOUR_API_KEY`.' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.