> ## Documentation Index > Fetch the complete documentation index at: https://docs.particle.pro/llms.txt > Use this file to discover all available pages before exploring further. # List sponsors advertising on a podcast > Returns per-sponsor ad activity on a single podcast (ads, distinct episodes, most recent placement), ordered by ad count descending. Pass company_id to scope the list to every sponsor linked to one company — the direct lookup for a multi-brand advertiser's footprint on one show, replacing a paginated scan of each sponsor's full podcast list. Entries agree with the ad_count values from the sponsor podcasts endpoint for the same sponsor and podcast. Network promos are excluded. ## OpenAPI ````yaml /openapi.json get /v1/podcasts/{id}/advertising/sponsors openapi: 3.1.0 info: description: Public API for Particle — news intelligence, financial data, and analysis. title: Particle API version: 0.1.0 servers: - url: https://api.particle.pro security: - ApiKeyHeader: [] - BearerAuth: [] paths: /v1/podcasts/{id}/advertising/sponsors: get: tags: - Podcast Advertising - tier:premium summary: List sponsors advertising on a podcast description: >- Returns per-sponsor ad activity on a single podcast (ads, distinct episodes, most recent placement), ordered by ad count descending. Pass company_id to scope the list to every sponsor linked to one company — the direct lookup for a multi-brand advertiser's footprint on one show, replacing a paginated scan of each sponsor's full podcast list. Entries agree with the ad_count values from the sponsor podcasts endpoint for the same sponsor and podcast. Network promos are excluded. operationId: list-podcast-advertising-sponsors parameters: - description: Results per page explode: false in: query name: limit schema: default: 25 description: Results per page format: int64 maximum: 100 minimum: 1 type: integer - description: Opaque pagination cursor from previous response explode: false in: query name: cursor schema: description: Opaque pagination cursor from previous response type: string - description: Podcast slug (e.g., 'all-in'), internal ID, or numeric iTunes ID in: path name: id required: true schema: description: Podcast slug (e.g., 'all-in'), internal ID, or numeric iTunes ID type: string - description: >- Scope to sponsors linked to this company (ID, domain, or entity slug) — e.g. every brand of one advertiser on this show explode: false in: query name: company_id schema: description: >- Scope to sponsors linked to this company (ID, domain, or entity slug) — e.g. every brand of one advertiser on this show type: string - description: >- Only include ads from episodes published on or after this ISO 8601 date or date-time explode: false in: query name: since schema: description: >- Only include ads from episodes published on or after this ISO 8601 date or date-time examples: - '2025-01-01T00:00:00Z' type: string - description: >- Only include ads from episodes published before this ISO 8601 date or date-time explode: false in: query name: until schema: description: >- Only include ads from episodes published before this ISO 8601 date or date-time examples: - '2026-01-01T00:00:00Z' type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/PagePodcastSponsorEntry' description: OK default: content: application/problem+json: schema: $ref: '#/components/schemas/PlatformError' description: Error x-codeSamples: - label: cURL lang: curl source: |- curl -H "X-API-Key: $PARTICLE_API_KEY" \ "https://api.particle.pro/v1/podcasts/{id}/advertising/sponsors?limit=25" components: schemas: PagePodcastSponsorEntry: additionalProperties: false properties: cursor: description: Pass to next request for more results type: string data: description: List of results items: $ref: '#/components/schemas/PodcastSponsorEntry' type: - array - 'null' has_more: description: Whether more results exist type: boolean required: - data - has_more type: object PlatformError: additionalProperties: false properties: detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string error_code: type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string resolve: $ref: '#/components/schemas/ErrorResolve' status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string type: object PodcastSponsorEntry: additionalProperties: false properties: ad_count: description: Total ads on this podcast from this sponsor format: int64 type: integer episode_count: description: Distinct episodes of this podcast featuring the sponsor format: int64 type: integer last_seen_at: description: Publication time of the sponsor's most recent ad on this podcast format: date-time type: string sponsor: $ref: '#/components/schemas/SponsorCompact' description: Sponsor advertising on the podcast required: - sponsor - episode_count - ad_count type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object ErrorResolve: additionalProperties: false properties: action: type: string endpoint: type: string message: type: string method: type: string url: type: string required: - message type: object SponsorCompact: additionalProperties: false properties: company: $ref: '#/components/schemas/CompanyCompact' description: Linked company record id: description: Unique identifier type: string name: description: Sponsor name type: string required: - id - name type: object CompanyCompact: additionalProperties: false properties: description: description: Short company description, when known. type: string domain: description: Primary website domain (e.g. 'nvidia.com'), when known. type: string id: description: Company identifier (domain, slug, or encoded ID) type: string image_url: description: Company logo or image URL type: string name: description: Company name type: string slug: description: >- Stable human-readable handle (the linked knowledge-graph slug, e.g. 'nvidia'), when known. Companies have no slug of their own; prefer this for display and pass it (or id) to /v1/companies. type: string ticker: description: Primary stock ticker symbol, when listed. type: string required: - id - name type: object securitySchemes: ApiKeyHeader: description: Pass your API key in the X-API-Key header (recommended). in: header name: X-API-Key type: apiKey BearerAuth: description: Pass your API key as a Bearer token in the Authorization header. scheme: bearer type: http ````