# Particle Pro – Get Entity Mentions in Episode Transcript

> Particle Pro – Get Entity Mentions in Episode Transcript 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).

Finds all mentions of a specific entity within a podcast episode's transcript and returns each mention with surrounding dialogue context windows.

## Facts

- Endpoint: GET https://api.particle.pro/v1/podcasts/episodes/:id/transcript/mentions
- 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-get-entity-mentions-in-episode-transcript-e46c7ea2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QtKu3ogcFJ-4JwqsHBQr6

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-get-entity-mentions-in-episode-transcript-e46c7ea2
```

Example prompt: Show me every time Sam Altman was mentioned in the All-In episode with ID 'ep-2024-summit', and give me 3 lines of context around each mention.

## When to prefer this

Use this endpoint when you need to find and read the specific parts of a podcast transcript where a known entity (person, company, etc.) is mentioned, along with conversational context. Prefer this over full transcript retrieval when you only care about a specific entity's mentions rather than the entire transcript. Best suited for media monitoring, research, and entity-focused transcript analysis workflows.

## Known failure modes

- Episode ID not found — 404 if the slug or ID does not correspond to an existing episode
- Entity ID not found — empty mentions array or 404 if the entity_id does not exist in the knowledge graph
- Transcript unavailable — episode may not yet have a processed transcript
- Invalid cursor — 400 if a malformed or expired pagination cursor is provided
- Rate limiting or payment failure — 402 if x402 payment is not processed correctly for the $0.03 per-call fee

## How this service works

Get entity mentions in transcript. Finds all mentions of a specific entity within an episode's transcript and returns each mention with surrounding dialogue context.

## Output

Returns a paginated list of entity mentions found in the episode transcript. Each mention includes the matched dialogue line and a configurable window of surrounding lines (controlled by context_lines). When entity_id is not specified, returns top-level entities found with their mentions. Supports cursor-based pagination for navigating large result sets.

## 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": "Episode slug or ID"
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "limit": {
       "type": "integer",
       "format": "int64",
       "description": "Results per page. When entity_id is set, paginates the mentions[] (windows) for that entity; otherwise paginates the top-level entities[]."
      },
      "cursor": {
       "type": "string",
       "description": "Opaque pagination cursor from a previous response."
      },
      "entity_id": {
       "type": "string",
       "description": "Entity identifier (KGE ID or slug). When omitted, returns mentions for all entities."
      },
      "context_lines": {
       "type": "integer",
       "format": "int64",
       "description": "Lines of dialogue context returned on each side of every mention line. A single mention yields up to 2*context_lines+1 lines (clamped at transcript boundaries). Adjacent or overlapping windows merge into one chunk."
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/particle-pro-get-entity-mentions-in-episode-transcript-e46c7ea2/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)