Get a topic

Returns a single topic with breadcrumb ancestors and the top direct children by prominence. Children are capped — use /v1/topics?parent_id= to paginate beyond the cap.

GET /v1/topics/{id}

cURL

cURL

curl -H "X-API-Key: $PARTICLE_API_KEY" \
  "https://api.particle.pro/v1/topics/{id}"

200

{
  "id": "<string>",
  "name": "<string>",
  "slug": "<string>",
  "total_children": 123,
  "ancestors": [
    "<string>"
  ],
  "ancestry": "<string>",
  "ancestry_path": "<string>",
  "children": [
    {
      "id": "<string>",
      "name": "<string>",
      "slug": "<string>",
      "ancestry": "<string>",
      "ancestry_path": "<string>",
      "episode_count": 123
    }
  ],
  "episode_count": 123
}

Authorizations

ApiKeyHeaderBearerAuth

X-API-Key · string · header · required

Pass your API key in the X-API-Key header (recommended).

Path Parameters

id · string · required

Topic ID, ancestry slug (e.g., technology/artificial-intelligence), or ancestry path hash

Response

200

application/json

OK

id · string · required

Unique identifier

name · string · required

Topic name

slug · string · required

Ancestry-based slug (e.g., technology/artificial-intelligence). Can be used as topic_id.

total_children · integer<int64> · required

Total number of direct child topics. May exceed len(children) when truncated; 0 for leaf topics.

ancestors · string[] | null

Ancestor topic names from root to parent

ancestry · string

Human-readable breadcrumb path (e.g. Business > Technology > AI)

ancestry_path · string

Hash-based ancestry path for programmatic filtering

children · object[] | null

Direct child topics, capped — may be truncated. Paginate via /v1/topics?parent_id={id} to enumerate all.

Show child attributes

episode_count · integer<int64>

Number of episodes in this podcast that cover this topic (only populated for /v1/podcasts/{id} topic lists)