# Particle Pro – List Podcasts for a Sponsor

> Particle Pro – List Podcasts for a Sponsor is a paid API for AI agents from api.particle.pro, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).

Returns a paginated list of podcasts where a given sponsor advertises, ordered by the number of episodes featuring that sponsor.

## Facts

- Endpoint: GET https://api.particle.pro/v1/podcasts/advertising/sponsors/:id/podcasts
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/particle-pro-list-podcasts-for-a-sponsor-f58ea660
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CqYGPDQpCl0mG4wQ5B3um

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability particle-pro-list-podcasts-for-a-sponsor-f58ea660
```

Example prompt: Show me all the podcasts where Squarespace advertises — I want them ranked by how many episodes they appear in, and just give me the top 20.

## When to prefer this

Use this endpoint when you need to enumerate all podcast properties associated with a specific advertiser or sponsor, especially when ranked by advertising frequency. Prefer this over a general podcast search when the starting point is a known brand/sponsor identity (by ID, domain, or slug) rather than podcast topic or audience. It is the right choice for competitive ad-placement research, brand media audits, or building sponsor-to-podcast mapping tables.

## Known failure modes

- Invalid or unknown sponsor ID returns 404 not found
- Malformed date in since/until parameters returns 400 bad request
- Expired or invalid pagination cursor returns 400 or empty result
- Sponsor exists but has no associated podcast ads returns empty list
- Rate limiting or payment failure returns 402 or 429

## How this service works

List podcasts for a sponsor. Returns a paginated list of podcasts where the sponsor advertises, ordered by the number of episodes featuring the sponsor.

## Output

A paginated list of podcasts where the specified sponsor advertises, each entry containing podcast metadata and ordered by the number of episodes in which the sponsor appears. Includes an opaque pagination cursor for retrieving subsequent pages.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "description": "Sponsor ID, company ID, company domain, or company slug"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "format": "int64",
       "description": "Results per page"
      },
      "since": {
       "type": "string",
       "description": "Only include ads from episodes published on or after this ISO 8601 date or date-time"
      },
      "until": {
       "type": "string",
       "description": "Only include ads from episodes published before this ISO 8601 date or date-time"
      },
      "cursor": {
       "type": "string",
       "description": "Opaque pagination cursor from previous response"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-list-podcasts-for-a-sponsor-f58ea660/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.particle.pro](https://www.zero.xyz/host/api.particle.pro/llms.txt)