> ## Documentation Index > Fetch the complete documentation index at: https://docs.fuseai.com/llms.txt > Use this file to discover all available pages before exploring further. # The campaign's leads with their per-step state > Lists the contacts enrolled in the campaign with their progress through the sequence. `id` is the campaign-membership row and `contactId` is the underlying contact, so you can cross-reference the contacts API. `status` is the state the app shows for the lead (it reads `stopped` or `completed` once the campaign itself stops), `sentSteps`/`totalSteps` show progress, and `firstSentBy` names the account and channel that first reached the lead. Only the token owner's own campaigns resolve: a campaign delegated to you, one shared by your team's visibility settings, and a deleted one all answer 404. Rate limit: 30 requests/minute and 1,000/day per token owner, shared by every campaign, scheduled-send, campaign-template and knowledge-hub endpoint. Errors: - `404` `CAMPAIGN_NOT_FOUND` — No campaign with this id exists, it belongs to another account (including a campaign delegated to you or shared by your team's visibility settings), or it has been deleted. - `422` `VALIDATION_FAILED` — A query parameter is out of range, or campaignId is not a 24-character hex id. - `429` `RATE_LIMITED` — More than 30 campaign requests in a minute, or 1,000 in a day, for this token owner (the bucket is shared by every /business/campaigns, /business/scheduled-sends, /business/campaign-templates and /business/knowledge-hubs call). - `500` `UNEXPECTED_ERROR` — An unhandled failure; the detail stays in our logs and is never returned. Requires one of the following token scopes: campaigns. ## OpenAPI ````yaml /openapi.json get /business/campaigns/{campaignId}/leads openapi: 3.1.0 info: title: Fuse Business API version: 1.0.0 description: >- External API for lists, campaigns, prospect search and contacts. Authenticate with your API token as HTTP Basic. All paths are under /api/v1. servers: - url: https://api.tryfuse.ai/api/v1 description: Production security: - basicAuth: [] tags: - name: Lists - name: Custom columns - name: Smart columns - name: Exports - name: Campaigns - name: Knowledge hubs - name: Analytics - name: Website intent - name: Account - name: Prospect search - name: Campaign steps - name: Scheduled sends - name: Campaign templates - name: Agents - name: Research - name: Company search - name: Saved searches - name: Folders - name: Contacts paths: /business/campaigns/{campaignId}/leads: get: tags: - Campaigns summary: The campaign's leads with their per-step state description: >- Lists the contacts enrolled in the campaign with their progress through the sequence. `id` is the campaign-membership row and `contactId` is the underlying contact, so you can cross-reference the contacts API. `status` is the state the app shows for the lead (it reads `stopped` or `completed` once the campaign itself stops), `sentSteps`/`totalSteps` show progress, and `firstSentBy` names the account and channel that first reached the lead. Only the token owner's own campaigns resolve: a campaign delegated to you, one shared by your team's visibility settings, and a deleted one all answer 404. Rate limit: 30 requests/minute and 1,000/day per token owner, shared by every campaign, scheduled-send, campaign-template and knowledge-hub endpoint. Errors: - `404` `CAMPAIGN_NOT_FOUND` — No campaign with this id exists, it belongs to another account (including a campaign delegated to you or shared by your team's visibility settings), or it has been deleted. - `422` `VALIDATION_FAILED` — A query parameter is out of range, or campaignId is not a 24-character hex id. - `429` `RATE_LIMITED` — More than 30 campaign requests in a minute, or 1,000 in a day, for this token owner (the bucket is shared by every /business/campaigns, /business/scheduled-sends, /business/campaign-templates and /business/knowledge-hubs call). - `500` `UNEXPECTED_ERROR` — An unhandled failure; the detail stays in our logs and is never returned. Requires one of the following token scopes: campaigns. operationId: listCampaignLeads parameters: - name: campaignId in: path required: true description: >- The campaign's id (24-character hex ObjectId), as returned by POST /business/campaigns or as the campaignId of a GET /business/campaigns row. schema: type: string description: >- The campaign's id (24-character hex ObjectId), as returned by POST /business/campaigns or as the campaignId of a GET /business/campaigns row. - name: limit in: query required: false description: Page size, 1-100 (default 25). schema: type: integer minimum: 1 maximum: 100 default: 25 description: Page size, 1-100 (default 25). - name: pageNum in: query required: false description: 1-based page number (default 1). schema: type: integer minimum: 1 default: 1 description: 1-based page number (default 1). - name: search in: query required: false description: >- Free text matched case-insensitively against the lead's full name or their company name (1-200 characters); any string is accepted, and regex metacharacters are escaped for you, so it behaves as a literal substring match. A term that matches no lead returns an empty page, not an error. schema: type: string minLength: 1 maxLength: 200 description: >- Free text matched case-insensitively against the lead's full name or their company name (1-200 characters); any string is accepted, and regex metacharacters are escaped for you, so it behaves as a literal substring match. A term that matches no lead returns an empty page, not an error. responses: '200': description: Success headers: RateLimit-Limit: schema: type: integer description: Requests permitted in the current window. RateLimit-Remaining: schema: type: integer description: Requests remaining in the current window. RateLimit-Reset: schema: type: integer description: Seconds until the current window resets. content: application/json: schema: type: object properties: leads: type: array items: type: object properties: id: type: - string - 'null' description: The campaign-membership row's id. contactId: type: - string - 'null' description: The underlying contact's id. name: type: - string - 'null' email: type: - string - 'null' description: The contact's primary email address. linkedinUrl: type: - string - 'null' companyName: type: - string - 'null' companyUrl: type: - string - 'null' status: type: - string - 'null' description: >- The lead's state in this campaign as the app displays it. outcome: type: - string - 'null' description: Recorded outcome for the lead, when one was set. sentSteps: type: integer totalSteps: type: integer openCount: type: integer clickCount: type: integer hasOpened: type: boolean hasClicked: type: boolean hasReplied: type: boolean hasConnected: type: boolean description: >- Whether a LinkedIn connection request to this lead was accepted. firstMessageReceivedAt: type: - string - 'null' format: date-time description: When the lead's first reply arrived. firstSentBy: type: object properties: name: type: - string - 'null' email: type: - string - 'null' channel: type: - string - 'null' required: - name - email - channel required: - id - contactId - name - email - linkedinUrl - companyName - companyUrl - status - outcome - sentSteps - totalSteps - openCount - clickCount - hasOpened - hasClicked - hasReplied - hasConnected - firstMessageReceivedAt - firstSentBy pagination: type: object properties: page: type: integer description: 1-based page number this response covers. pageSize: type: integer description: Rows requested per page. total: type: integer description: Total rows matching the query. totalPages: type: integer description: Total pages at this page size. required: - page - pageSize - total - totalPages required: - leads - pagination example: leads: - id: 6a8da79aafc401ca94530c9d contactId: 6777d930c5c5e1865dc3f562 name: Imogen Low email: imogen@brightpay.com linkedinUrl: linkedin.com/in/imogen-low companyName: BrightPay companyUrl: brightpay.com status: stopped outcome: null sentSteps: 1 totalSteps: 2 openCount: 2 clickCount: 0 hasOpened: true hasClicked: false hasReplied: true hasConnected: false firstMessageReceivedAt: '2026-08-25T15:04:11.000Z' firstSentBy: name: Sam Rivera email: sam@yourcompany.com channel: email pagination: page: 1 pageSize: 25 total: 9 totalPages: 1 '400': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '402': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '409': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '422': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: Error content: application/json: schema: $ref: '#/components/schemas/Error' security: - basicAuth: [] components: schemas: Error: type: object properties: error: type: object properties: code: type: string message: type: string param: type: - string - 'null' doc_url: type: - string - 'null' request_id: type: - string - 'null' required: - code - message required: - error securitySchemes: basicAuth: type: http scheme: basic description: >- Your API token (`af_…`) as the Basic-auth username, with an empty password. ````