> ## Documentation Index > Fetch the complete documentation index at: https://docs.chatsailer.com/llms.txt > Use this file to discover all available pages before exploring further. # List campaign participants > Who is in this campaign, and where each of them is in it. `projected_send_at` is an estimate: blast windows, conversation conflicts and retries all move it. ## OpenAPI ````yaml /api-reference/openapi.json get /v1/campaigns/{campaign_id}/participants openapi: 3.1.0 info: description: >- The Sailer REST API for CRM, conversations, and campaigns. **Authentication.** Send a scoped token as `Authorization: Bearer sk_live_...`. Tokens are workspace-scoped; the workspace is implied by the token, so no tenant header is needed. A workspace administrator creates and revokes them; the secret is shown once at creation and cannot be recovered afterwards. **Pagination.** Collections return `{data, meta, links}`. Follow `links.next` until it is `null`; treat the cursor as opaque. **Errors.** Every non-2xx response is `{"error": {...}}` with a stable `code`. Quote `error.request_id` when contacting support. **Custom fields.** Workspace-defined fields appear under `custom_fields`, keyed by `field_key`. Read a record to see which keys a workspace uses; a dedicated field-discovery endpoint is not part of this release. title: Sailer API version: 1.0.0 servers: - url: https://api.chatsailer.com security: - SailerApiToken: [] tags: - description: Token introspection and workspace capabilities. name: Meta - description: >- People you talk to. Called *leads* in older Sailer surfaces; `contact` is the current name. name: Contacts - description: Companies that contacts belong to (B2B accounts). name: Organizations - description: Opportunities moving through a pipeline. name: Deals - description: Pipelines and their stages. name: Pipelines - description: Field definitions, including custom fields. name: Fields - description: Free-text annotations on CRM records. name: Notes - description: Scheduled and logged CRM activities. name: Activities - description: Per-entity label catalogs. name: Tags - description: Message threads with contacts, across every channel. name: Conversations - description: Outbound campaigns and their participants. name: Campaigns paths: /v1/campaigns/{campaign_id}/participants: get: tags: - Campaigns summary: List campaign participants description: >- Who is in this campaign, and where each of them is in it. `projected_send_at` is an estimate: blast windows, conversation conflicts and retries all move it. operationId: list_campaign_participants parameters: - in: path name: campaign_id required: true schema: description: Unique identifier for a campaign. examples: - camp_9f2ac41d8b7e4a51b0d3e6f7a1c2d3e4 pattern: ^camp_[0-9a-f]{32}$ title: Campaign Id type: string - description: Items per page (max 200). in: query name: limit required: false schema: default: 50 description: Items per page (max 200). maximum: 200 minimum: 1 title: Limit type: integer - description: Opaque cursor from a previous response's `links.next`. in: query name: cursor required: false schema: anyOf: - type: string - type: 'null' description: Opaque cursor from a previous response's `links.next`. title: Cursor responses: '200': content: application/json: schema: $ref: '#/components/schemas/CampaignParticipantList' description: Successful Response '422': content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' description: Validation Error security: - SailerApiToken: [] components: schemas: CampaignParticipantList: description: A page of campaign participants. properties: data: items: $ref: '#/components/schemas/CampaignParticipant' title: Data type: array links: $ref: '#/components/schemas/PageLinks' meta: $ref: '#/components/schemas/PageMeta' required: - data - meta - links title: CampaignParticipantList type: object HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' title: Detail type: array title: HTTPValidationError type: object CampaignParticipant: description: One contact's place in a campaign. properties: campaign_id: description: Unique identifier for a campaign. examples: - camp_9f2ac41d8b7e4a51b0d3e6f7a1c2d3e4 pattern: ^camp_[0-9a-f]{32}$ title: Campaign Id type: string contact_id: description: Unique identifier for a contact. examples: - con_9f2ac41d8b7e4a51b0d3e6f7a1c2d3e4 pattern: ^con_[0-9a-f]{32}$ title: Contact Id type: string contacted_at: anyOf: - format: date-time type: string - type: 'null' description: When this contact was actually messaged. title: Contacted At created_at: format: date-time title: Created At type: string id: description: Unique identifier for a campaign participant. examples: - cpar_9f2ac41d8b7e4a51b0d3e6f7a1c2d3e4 pattern: ^cpar_[0-9a-f]{32}$ title: Id type: string object: const: campaign_participant default: campaign_participant title: Object type: string projected_send_at: anyOf: - format: date-time type: string - type: 'null' description: >- When the campaign's schedule expects to message them. An estimate, not a commitment — blast windows and conflicts move it. title: Projected Send At status: $ref: '#/components/schemas/CampaignParticipantStatus' updated_at: format: date-time title: Updated At type: string required: - id - campaign_id - contact_id - status - created_at - updated_at title: CampaignParticipant type: object PageLinks: properties: next: anyOf: - type: string - type: 'null' description: Opaque cursor for the following page; null on the last page. title: Next title: PageLinks type: object PageMeta: properties: has_more: description: True when a next page exists. title: Has More type: boolean limit: description: Maximum items requested for this page. title: Limit type: integer required: - limit - has_more title: PageMeta type: object ValidationError: properties: ctx: title: Context type: object input: title: Input loc: items: anyOf: - type: string - type: integer title: Location type: array msg: title: Message type: string type: title: Error Type type: string required: - loc - msg - type title: ValidationError type: object CampaignParticipantStatus: enum: - pending - queued - processing - on_hold - conflict - sent - failed - cancelled - answered - excluded title: CampaignParticipantStatus type: string securitySchemes: SailerApiToken: description: >- A workspace API token. Create one in Settings → API. Send it as `Authorization: Bearer sk_live_...`. scheme: bearer type: http ````