# Particle Pro Podcast Publisher Advertising Leaderboard

> Particle Pro Podcast Publisher 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 a paginated leaderboard ranking podcast publishers by an advertising activity metric such as ad count, unique sponsors, or monetization density (ads per active podcast) across their entire catalog.

## Facts

- Endpoint: GET https://api.particle.pro/v1/podcasts/advertising/publishers/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-publisher-advertising-leaderboard-e17374f6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UARU693TWBq9b4exfaLDt

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-publisher-advertising-leaderboard-e17374f6
```

Example prompt: Show me the top 20 podcast publishers ranked by ads_per_active_podcast, but only include publishers with at least 5 active podcasts so tiny single-show operations don't dominate the leaderboard.

## When to prefer this

Use this endpoint when you need a ranked view of podcast publishers (not individual shows) by advertising activity. It is the right choice for competitive landscape analysis, identifying high-monetization networks, or surfacing small sub-networks with high ads-per-podcast density. Prefer this over the company advertising endpoint when the question is about publisher-level performance rather than a specific advertiser's reach.

## Known failure modes

- Invalid metric enum value returns a 400 validation error
- Cursor from a different query context may return unexpected or empty results
- min_active_podcasts set very high may return an empty leaderboard
- Rate limiting or payment failure (x402) results in a 402 response requiring payment
- No time-window filtering is supported — all data reflects an all-time snapshot

## How this service works

Get publisher advertising leaderboard. Ranks podcast publishers by an advertising activity metric across their entire catalog. ads_per_active_podcast is the monetization-density metric — small sub-networks (e.g. 'iHeartPodcasts and The Volume

## Output

A paginated list of podcast publishers ranked by the chosen advertising metric, including fields such as publisher name, the selected metric value (e.g. ad_count, unique_sponsors, ads_per_active_podcast), active podcast count, and a cursor for fetching the next page of results.

## 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"
      },
      "cursor": {
       "type": "string",
       "description": "Opaque pagination cursor from previous response"
      },
      "metric": {
       "enum": [
        "ad_count",
        "unique_sponsors",
        "podcast_reach",
        "episode_reach",
        "ads_per_active_podcast"
       ],
       "type": "string",
       "description": "Metric to rank publishers by. ads_per_active_podcast surfaces monetization density (small sub-networks often outrank big catalogs). Ranking reflects an all-time MV-fresh snapshot; this endpoint does not currently support time-window filters."
      },
      "min_active_podcasts": {
       "type": "integer",
       "format": "int64",
       "description": "Only rank publishers with at least this many active podcasts (catalog podcasts that have run at least one detected ad). Guards ads_per_active_podcast and the other density-style metrics against tiny catalogs dominating the leaderboard — single-show publishers can otherwise rank #1 on ads_per_active_podcast purely on noise."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-podcast-publisher-advertising-leaderboard-e17374f6/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)