# Particle Pro Podcast Advertising Leaderboard

> Particle Pro Podcast Advertising Leaderboard is a paid API for AI agents from api.particle.pro, paid per call via x402, $0.04/call, status unknown (last checked 2026-09-14).

Returns the top podcast advertising sponsors ranked by ad count, podcast reach, or episode reach, with optional time range and company/publisher filtering.

## Facts

- Endpoint: GET https://api.particle.pro/v1/podcasts/advertising/leaderboard
- Price: $0.04/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-podcast-advertising-leaderboard-2488a1ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fcnQyjKABHKgNyQO_KbBq

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-podcast-advertising-leaderboard-2488a1ec
```

Example prompt: Show me the top 10 podcast advertising sponsors ranked by podcast reach from January 1, 2025 to June 30, 2025.

## When to prefer this

Use this endpoint when you need a ranked leaderboard of podcast advertising sponsors across the entire ecosystem or filtered to a specific publisher or company, especially when ranking by reach or ad count over a defined time window. Prefer this over the company advertising profile endpoint when you need comparative rankings across multiple sponsors rather than deep intelligence on a single company.

## Known failure modes

- Invalid metric enum value returns 400 error
- Malformed ISO 8601 date in 'since' or 'until' causes 400 validation error
- Unknown company_id or publisher_id returns empty results or 404
- Expired or invalid pagination cursor returns error
- Rate limiting or payment failure returns 402 or 429

## How this service works

Get advertising leaderboard. Returns the top podcast advertising sponsors ranked by the specified metric, with optional time range and company filtering.

## Output

A paginated, ranked list of companies/sponsors with their scores for the specified metric (ad_count, podcast_reach, or episode_reach), filtered by optional date range, company, or publisher. Includes an opaque pagination cursor for fetching 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"
    },
    "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 (e.g. 2025-01-01 or 2025-01-01T00:00:00Z)"
      },
      "until": {
       "type": "string",
       "description": "Only include ads from episodes published before this ISO 8601 date or date-time (e.g. 2026-01-01 or 2026-01-01T00:00:00Z)"
      },
      "cursor": {
       "type": "string",
       "description": "Opaque pagination cursor from previous response"
      },
      "metric": {
       "enum": [
        "ad_count",
        "podcast_reach",
        "episode_reach"
       ],
       "type": "string",
       "description": "Metric to rank sponsors by"
      },
      "company_id": {
       "type": "string",
       "description": "Filter by company ID, domain, or entity slug"
      },
      "publisher_id": {
       "type": "string",
       "description": "Restrict the leaderboard to ads on podcasts attributed to this publisher (slug or ID)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-podcast-advertising-leaderboard-2488a1ec/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)