# Particle Pro – List Podcast Advertising Sponsors

> Particle Pro – List Podcast Advertising Sponsors 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 podcast advertising sponsors, optionally filtered by name search or company, with reach and ad-count metrics scoped to a date window.

## Facts

- Endpoint: GET https://api.particle.pro/v1/podcasts/advertising/sponsors
- 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-podcast-advertising-sponsors-a35ec63a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_K2HV6krAg6Mq_P_e0e42n

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-podcast-advertising-sponsors-a35ec63a
```

Example prompt: Can you pull up the list of podcast advertising sponsors on Particle Pro for the company 'spotify.com', limited to 20 results, and scope the ad counts to episodes published since January 1, 2024?

## When to prefer this

Use this endpoint when you need to discover or enumerate podcast advertising sponsors, search by advertiser name, filter by company identity, or analyze sponsor ad activity within a specific date range. Prefer it over generic web search when you need structured, quantitative reach and ad-count data tied to specific sponsors in the Particle Pro podcast advertising database.

## Known failure modes

- Invalid company_id/domain/slug returns empty results or 404
- Malformed ISO 8601 date in since/until returns 400 bad request
- Invalid cursor causes pagination error
- No sponsors matching query returns empty list with no error
- Rate limiting or payment failure returns 402 or 429

## How this service works

List sponsors. Returns a paginated list of podcast advertising sponsors, optionally filtered by name search or company.

## Output

A paginated list of podcast advertising sponsor objects, each including sponsor name, ad count, podcast reach, and episode reach (optionally scoped to a date window), plus an opaque cursor for fetching the next page.

## 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"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "q": {
       "type": "string",
       "description": "Search by name (case-insensitive partial match)"
      },
      "limit": {
       "type": "integer",
       "format": "int64",
       "description": "Results per page"
      },
      "since": {
       "type": "string",
       "description": "Scope each sponsor's ad_count, podcast_reach, and episode_reach to ads from episodes published on or after this ISO 8601 date or date-time. Does not exclude sponsors with zero activity in the window."
      },
      "until": {
       "type": "string",
       "description": "Scope each sponsor's ad_count, podcast_reach, and episode_reach to ads from episodes published before this ISO 8601 date or date-time."
      },
      "cursor": {
       "type": "string",
       "description": "Opaque pagination cursor from previous response"
      },
      "company_id": {
       "type": "string",
       "description": "Filter by company ID, domain, or entity slug"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-list-podcast-advertising-sponsors-a35ec63a/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)