> ## 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 a podcast could pitch > Returns advertisers that run on the podcast's related shows but not on this one, ranked by how related those venues are, how much the sponsor buys there, and how recently — a prospecting list for a show selling its own inventory ('who buys shows like mine'), not a prediction. Each row carries the sponsor (with its linked company, the path to people to contact via GET /v1/companies/{id}/people), a score, a band, how many related shows run it, its ad count across them, the date of its most recent ad, and with include=via which shows. active_since keeps only sponsors still buying after a date. Related sets are precomputed (GET /v1/podcasts/{id}/related); a show whose set has not been computed yet gets an empty page. For who sponsors THIS show use GET /v1/podcasts/{id}/advertising; for a sponsor's full footprint use GET /v1/podcasts/advertising/sponsors/{id}/podcasts. ## OpenAPI ````yaml /openapi.json get /v1/podcasts/{id}/recommendations/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}/recommendations/sponsors: get: tags: - Podcasts - tier:premium summary: List sponsors a podcast could pitch description: >- Returns advertisers that run on the podcast's related shows but not on this one, ranked by how related those venues are, how much the sponsor buys there, and how recently — a prospecting list for a show selling its own inventory ('who buys shows like mine'), not a prediction. Each row carries the sponsor (with its linked company, the path to people to contact via GET /v1/companies/{id}/people), a score, a band, how many related shows run it, its ad count across them, the date of its most recent ad, and with include=via which shows. active_since keeps only sponsors still buying after a date. Related sets are precomputed (GET /v1/podcasts/{id}/related); a show whose set has not been computed yet gets an empty page. For who sponsors THIS show use GET /v1/podcasts/{id}/advertising; for a sponsor's full footprint use GET /v1/podcasts/advertising/sponsors/{id}/podcasts. operationId: list-podcast-recommended-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: >- Optional response sections. Pass include=via to attach, for each recommended sponsor, the related shows that run it — the peer set to cite in a pitch. explode: false in: query name: include schema: description: >- Optional response sections. Pass include=via to attach, for each recommended sponsor, the related shows that run it — the peer set to cite in a pitch. items: enum: - via type: string type: - array - 'null' - description: >- Only recommendations with a score at or above this value. Omit (or 0) for every recommendation; the band field is the recommended way to filter by strength. explode: false in: query name: min_score schema: description: >- Only recommendations with a score at or above this value. Omit (or 0) for every recommendation; the band field is the recommended way to filter by strength. format: double maximum: 1 minimum: 0 type: number - description: >- Only sponsors whose most recent ad across the related shows was published on or after this ISO 8601 date or date-time — the 'still buying' filter. explode: false in: query name: active_since schema: description: >- Only sponsors whose most recent ad across the related shows was published on or after this ISO 8601 date or date-time — the 'still buying' filter. examples: - '2026-01-01T00:00:00Z' type: string responses: '200': content: application/json: schema: $ref: '#/components/schemas/PageRecommendedSponsor' 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}/recommendations/sponsors?limit=25" components: schemas: PageRecommendedSponsor: additionalProperties: false properties: cursor: description: Pass to next request for more results type: string data: description: List of results items: $ref: '#/components/schemas/RecommendedSponsor' 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 RecommendedSponsor: additionalProperties: false properties: band: description: >- Coarse class of the score; branch on this rather than on exact thresholds. enum: - strong - moderate - weak type: string last_ad_at: description: Publish date of the sponsor's most recent ad across those shows. format: date-time type: string score: description: >- Strength of the recommendation in (0,1): how related the shows that run this sponsor are, weighted by how much it buys there and how recently. Compounds across venues. format: double type: number shared_show_count: description: How many of the show's related shows run this sponsor. format: int64 type: integer sponsor: $ref: '#/components/schemas/SponsorCompact' description: >- The recommended sponsor, with its linked company when known — the company record is the path to people to contact. total_ads: description: >- The sponsor's ad reads summed over those related shows (network promos excluded). format: int64 type: integer via: description: >- The related shows that run this sponsor, strongest first (at most three) — the peer set to cite in a pitch. items: $ref: '#/components/schemas/PodcastCompact' type: - array - 'null' required: - sponsor - score - band - shared_show_count - total_ads 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 PodcastCompact: additionalProperties: false properties: best_rank: $ref: '#/components/schemas/PodcastRankingHandle' description: >- The single best (lowest-numbered) chart position this podcast currently holds across all charts. Omitted when the podcast holds no current chart appearances, and on endpoints that do not attach it. Reading a full chart (with country/category/source filters and history) remains premium; a single show's own placement is available on every plan. id: description: Podcast ID type: string image_url: description: Cover image URL type: string popularity: description: >- Global popularity percentile in (0,1], a cume_dist ranking over all currently-charting podcasts (Apple Podcasts charts). Higher is more popular. Omitted when the podcast is not currently charting, and on endpoints that build this resource from a projection rather than the full podcast row. format: double type: number publisher: $ref: '#/components/schemas/PodcastPublisherCompact' description: >- Publisher (network) attributed to this podcast. Present only when the embedding endpoint preloads publisher attribution and the podcast's publisher is known. slug: description: Human-readable slug identifier type: string title: description: Podcast title type: string required: - id - title 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_mode: description: >- Image presentation policy. AUTOMATIC permits client fallbacks, CUSTOM requires image_url, and NONE suppresses all image fallbacks. enum: - AUTOMATIC - CUSTOM - NONE 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 PodcastRankingHandle: additionalProperties: false properties: captured_at: format: date-time type: string category_slug: type: string chart_type: enum: - top_podcasts type: string country: type: string rank: format: int64 type: integer source: enum: - apple - spotify type: string required: - source - chart_type - rank - captured_at type: object PodcastPublisherCompact: additionalProperties: false properties: id: description: Publisher ID type: string name: description: Publisher name type: string slug: description: >- Human-readable slug identifier (e.g., 'goalhanger', 'iheartpodcasts'). When present, accepted in place of the ID anywhere a publisher reference is taken in the API. Occasionally absent on publishers whose name doesn't slugify (e.g., scripts not representable in ASCII URL slugs). 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 ````