---
title: "List sponsors for a publisher"
method: GET
path: "/v1/podcasts/publishers/{id}/advertising/sponsors"
tags: ["Podcast Advertising", "tier:premium"]
---

# List sponsors for a publisher

`GET /v1/podcasts/publishers/{id}/advertising/sponsors`

## Request

- Base URL: `https://api.particle.pro`
- URL: `https://api.particle.pro/v1/podcasts/publishers/{id}/advertising/sponsors`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

Returns a paginated list of sponsors active across the publisher's catalog. Each entry includes the bundle-buy signal — podcast_coverage (distinct podcasts in the catalog where the sponsor appears) and coverage_share (the same as a 0..1 fraction of the publisher's catalog). Sort by podcast_coverage and combine with min_podcast_coverage to surface network buyers.

## Path parameters

- `id` string, required: Podcast publisher slug (e.g., 'iheartpodcasts', 'bbc-radio-4') or ID

## Query parameters

- `limit` integer: Results per page
- `cursor` string: Opaque pagination cursor from previous response
- `q` string: Search by name (case-insensitive partial match)
- `sort` 'ad_count' | 'podcast_coverage' | 'episode_reach': Sort order. ad_count ranks by ad volume on the publisher's catalog; podcast_coverage surfaces network buyers (sponsors hitting many shows); episode_reach prioritizes broad episode-level exposure.
- `min_podcast_coverage` integer: Only return sponsors that appear on at least this many distinct podcasts in the publisher's catalog. Use to filter for bundle/network buyers.

## Response `200`

OK

- PagePublisherSponsorEntry
  - `cursor` string: Pass to next request for more results
  - `data` PublisherSponsorEntry[], nullable, required: List of results
    - `ad_count` integer, required: Total ads from this sponsor on this publisher's catalog
    - `company` CompanyCompact
      - `description` string: Short company description, when known.
      - `domain` string: Primary website domain (e.g. 'nvidia.com'), when known.
      - `id` string, required: Company identifier (domain, slug, or encoded ID)
      - `image_url` string: Company logo or image URL
      - `name` string, required: Company name
      - `slug` string: 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.
      - `ticker` string: Primary stock ticker symbol, when listed.
    - `coverage_share` number, double, required: podcast_coverage / publisher.total_podcasts (0..1). The bundle-buy signal: a sponsor with coverage_share >= 0.25 is doing a network buy across the publisher.
    - `episode_reach` integer, required: Distinct episodes featuring this sponsor on this publisher's catalog
    - `first_seen_at` string, date-time: Earliest detected ad appearance on this publisher's catalog
    - `id` string, required: Sponsor ID
    - `last_seen_at` string, date-time: Most recent ad appearance on this publisher's catalog
    - `name` string, required: Sponsor name
    - `podcast_coverage` integer, required: Distinct podcasts in the publisher where this sponsor appears
  - `has_more` boolean, required: Whether more results exist

## Other responses

- `402`: Payment Required. Read error_code. payment_required is the x402 path: either a keyless request being challenged — pay $0.04 in USDC per request (requirements in the PAYMENT-REQUIRED header) or send a pp_ API key — or a supplied payment that failed settlement (details in the PAYMENT-RESPONSE header; retry the same signature before signing a new one). See https://docs.particle.pro/x402. Any other code means the credential was accepted but does not cover this request (a plan or session gate such as premium_required or paid_plan_confirmation_required); its resolve says how to obtain access, and no payment header is sent.
- `default`: Error

---

[API](https://skmtc.dev/particle/apis/particle-api.md) · [All operations](https://skmtc.dev/particle/apis/particle-api/llms.txt) · [OpenAPI document](https://skmtc.dev/particle/apis/particle-api/revisions/416ba82ab9d7?raw)