> ## 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 agent history > Lists this TFU Live agent’s saves, newest first, a page at a time. Each says who saved, when and what changed, with the change itself. Use it to choose a revision for `POST /api/tfu-live-agents/{id}/restore`. The last 200 saves are kept. Required scope: `agents:read`. Required API key scope: `agents:read`. ## OpenAPI ````yaml /openapi.yaml get /api/tfu-live-agents/{id}/history 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": "", "message": "..." }` on failure. Branch on the `error` code; `message` is for people and its wording can change. 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: Caller ID description: >- Register the businesses behind your calling numbers with Twilio, so carriers know who is calling and label the calls less often as spam. Read where every number stands, then register one business per call, naming the person who confirmed its details. - 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/{id}/history: get: tags: - TFU Live summary: List TFU Live agent history description: >- Lists this TFU Live agent’s saves, newest first, a page at a time. Each says who saved, when and what changed, with the change itself. Use it to choose a revision for `POST /api/tfu-live-agents/{id}/restore`. The last 200 saves are kept. Required scope: `agents:read`. Required API key scope: `agents:read`. operationId: get-tfu-live-agents-by-id-history parameters: - name: locationId in: query required: true schema: type: string description: >- The sub-account. It must belong to the agency, and be the credential’s own sub-account when the credential is limited to one. - name: id in: path required: true schema: type: string description: >- The TFU Live agent id, with its tfu_live: prefix, as `GET /api/tfu-live-agents` returns it. Other agent ids are refused. - name: page in: query schema: type: integer minimum: 1 default: 1 description: The page to read, from 1. - name: limit in: query schema: type: integer minimum: 1 maximum: 50 default: 10 description: >- Saves per page. A save that changed a long prompt can be large, so ask for fewer when a page is too big. responses: '200': description: >- Successful TFU Live response. Setup acceptance is not verified readiness or campaign activation. content: application/json: schema: $ref: '#/components/schemas/TfuLiveAgentHistoryResponse' example: success: true data: history: - revision: 2 definitionHash: 3f2b9c0d1e savedAt: '2026-09-20T10:15:00.000Z' actor: user restorable: true changes: - 'Voice instructions: 1 line added, 1 line removed.' details: - field: voice added: - >- Speak at a calm pace and pronounce addresses clearly. removed: - Speak calmly. - revision: 1 definitionHash: 9a4d7e2c6b savedAt: '2026-09-19T16:02:00.000Z' actor: user restorable: true changes: - 'Brain: 4 lines added.' pagination: page: 1 limit: 10 total: 2 totalPages: 1 '400': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: invalid_request message: Some details are missing. Please fill them in and try again. code: invalid_request '401': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: Unauthorized message: Please sign in to continue. '403': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: InsufficientScope message: >- This access key does not allow this action. Please ask your account admin to change its permissions. requiredScope: agents:write '404': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: not_found message: >- We couldn't find that agent. Please refresh and choose another. code: not_found '409': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: conflict message: >- This changed while you were working on it. Please refresh and try again. code: conflict '422': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' examples: invalid_workflow: value: success: false error: invalid_workflow message: Please check the steps in this workflow and try again. code: invalid_workflow workflowId: wf_account1 stepId: check workflow_resource_not_found: value: success: false error: workflow_resource_not_found message: >- Something this workflow step uses could not be found. Please choose it again. code: workflow_resource_not_found workflowId: wf_book0001 stepId: slots field: routing[1].calendarId workflow_secret_refused: value: success: false error: workflow_secret_refused message: >- Please save the private connection details in this workflow step again. code: workflow_secret_refused workflowId: wf_account1 stepId: lookup field: headers.Authorization invalid_agent: value: success: false error: invalid_agent message: Please check the agent settings and try again. code: invalid_agent setup_incomplete: value: success: false error: setup_incomplete message: >- Some settings are missing. Please finish the highlighted steps. 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 refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: TooManyRequests message: That's a lot at once. Please wait a moment and try again. '502': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: provider_unavailable message: This isn't available right now. Please try again in a moment. code: provider_unavailable ref: 3f2b8c1e-7d4a-4f8e-9b6a-2c1d0e5f7a9b '503': description: >- TFU Live refused the request: { success: false, error, message, code, workflowId?, stepId?, field?, setupItems? }. Branch on error (code holds the same value), show message to people, and read the current agent before retrying. content: application/json: schema: $ref: '#/components/schemas/TfuLiveError' example: success: false error: TFU_LIVE_CAMPAIGN_PENDING message: >- Your agent draft was saved. Please try creating it again to finish attaching its campaign. code: TFU_LIVE_CAMPAIGN_PENDING ref: 3f2b8c1e-7d4a-4f8e-9b6a-2c1d0e5f7a9b security: - ApiKeyAuth: [] x-codeSamples: - lang: bash label: cURL source: |- curl --request GET \ --url https://api.teamfollowup.ai/api/tfu-live-agents/{id}/history \ --header 'Authorization: Bearer YOUR_API_KEY' components: schemas: TfuLiveAgentHistoryResponse: type: object required: - success - data properties: success: const: true data: type: object required: - history - pagination additionalProperties: false properties: history: type: array items: $ref: '#/components/schemas/TfuLiveHistoryEntry' description: This page of saves, newest first. pagination: type: object required: - page - limit - total - totalPages additionalProperties: false properties: page: type: integer minimum: 1 limit: type: integer minimum: 1 maximum: 50 total: type: integer minimum: 0 description: Every save kept, on all pages. totalPages: type: integer minimum: 0 additionalProperties: false TfuLiveError: type: object description: >- A TFU Live refusal: the standard error envelope, plus where a workflow refusal points and what setup still needs. required: - success - error - message properties: success: type: boolean example: false error: type: string description: >- The refusal’s code, the same value as code. A shared gate (authentication, scope, rate limit) answers with its own code, such as Unauthorized, InsufficientScope or TooManyRequests, and sends no code. message: type: string description: >- One plain sentence for a person: what happened and what to do next. Show it, never parse it: the wording can change, and browser users get it in their own language. API keys and OAuth apps always get English. example: We couldn't find that. It may have been moved or deleted. errors: type: array description: >- Sent when specific fields were refused: one entry for each field to fix. items: type: object additionalProperties: false required: - field - code - message properties: field: type: string description: Where the value sits in the request, as a dotted path. example: name code: type: string description: A stable code for what is wrong with the value. example: FieldRequired message: type: string description: One plain sentence for a person. example: Please fill this in. details: type: object additionalProperties: {} description: >- Data your code may need to act on the failure, such as ids or limits. Never text for people. ref: type: string description: >- Sent only when the failure was on our side. Quote it to support so they can find the request. It matches the `x-request-id` response header. example: 3f2b8c1e-7d4a-4f8e-9b6a-2c1d0e5f7a9b 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 - TFU_LIVE_ALREADY_ON_GOHIGHLEVEL - TFU_LIVE_CONNECTION_NOT_CONFIGURED - TFU_LIVE_GO_LIVE_BLOCKED - TFU_LIVE_CALLS_SCHEDULED - TFU_LIVE_PLAN_CHANGED - TFU_LIVE_PLAN_ANSWER_INVALID - TFU_LIVE_PLAN_ANSWER_REQUIRED - TFU_LIVE_CLONE_RESOURCES_UNAVAILABLE - TFU_LIVE_MOVE_RESOURCES_UNAVAILABLE - TFU_LIVE_OPERATION_IN_PROGRESS - TFU_LIVE_MASTER_PARENT_REFUSED - TFU_LIVE_MASTER_CHILD_REFUSED - TFU_LIVE_CLONE_UNSUPPORTED - TFU_LIVE_MOVE_CHANGED - TFU_LIVE_MOVE_CRM_UNSUPPORTED - TFU_LIVE_MOVE_DEFINITION_INVALID - TFU_LIVE_MOVE_CHANGES_TOO_MUCH - TFU_LIVE_MOVE_BRAIN_SYNC_PENDING description: >- The same code as error, kept for integrations built before error carried it. The kind of refusal: invalid_workflow (a workflow’s structure or a node’s settings, including a workflow whose calendars are on more than one system), 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 about it, for a person. description: >- On setup_incomplete: everything the agent still needs, the first of which the refusal names. blockers: type: array items: type: object required: - code - who - message additionalProperties: false description: One thing that stops the agent’s campaign from taking real calls. properties: code: type: string description: >- What it is, such as no_caller_id, no_trigger_tag, not_prepared, calling_line_not_ready, needs_gohighlevel or card_required. who: type: string enum: - rep - operator - staff description: >- Who clears it. rep: a setting of the agent’s own (its number, its trigger, its setup). operator: the person (approve GoHighLevel, add a card, upgrade the plan). staff: Team Follow Up. message: type: string description: >- What to do about it. An API key or OAuth client gets the go-live check’s own words. page: type: string description: >- Where a person does it in the dashboard, when there is a page for it. place: type: object additionalProperties: false required: - workflowId - stepId description: The workflow step it is about, when it is about one. properties: workflowId: type: string stepId: type: string description: >- On TFU_LIVE_GO_LIVE_BLOCKED: everything standing between the agent’s campaign and real calls, as `GET /api/tfu-live-agents/{id}/go-live-check` lists it. The campaign stayed paused. scheduledCalls: type: integer minimum: 1 description: >- On TFU_LIVE_CALLS_SCHEDULED (409): how many leads of the agent’s live campaign have a call still to come (a cadence call, an AI callback, a promised callback). An agent with calls off makes none of them. Nothing was saved; send the same edit with confirmScheduledCallsLost: true to turn calls off anyway. inputs: type: array items: type: string description: >- On TFU_LIVE_PLAN_ANSWER_INVALID and TFU_LIVE_PLAN_ANSWER_REQUIRED (422): the ids of the plan’s inputs whose answer is wrong or missing. It can be empty when the answers fail together, such as answers that leave a cadence with no steps. kinds: type: array items: type: string description: >- On TFU_LIVE_CLONE_RESOURCES_UNAVAILABLE and TFU_LIVE_MOVE_RESOURCES_UNAVAILABLE (503): the new sub-account’s lists that could not be read, such as calendar, field or tag. Absent when the cadences could not be read. Nothing was written. Try again. additionalProperties: {} TfuLiveHistoryEntry: type: object required: - revision - definitionHash - savedAt - changes additionalProperties: {} properties: revision: type: integer minimum: 1 description: >- The revision this save made. Send it to `POST /api/tfu-live-agents/{id}/restore` to bring it back. definitionHash: type: string description: The version this save made, as ifVersion names a version. savedAt: type: string format: date-time actor: type: string description: >- Who made the save: user (a person), assistant (the agent editing itself in the builder conversation), system (the platform, such as a move to another sub-account) or split_sync (copied from its split test). restoredFrom: type: integer minimum: 1 description: 'On a restore: the revision it brought back.' restorable: type: boolean description: >- Whether the text of this revision is kept, so a restore can bring it back. changes: type: array items: type: string description: What changed, in a few words per change. details: type: array items: type: object required: - field properties: field: type: string additionalProperties: {} description: >- The change itself, field by field: the lines added and removed, or a setting before and after. 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.