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Particle Pro – Get Topic
x402
Particle Pro – Get Topic is a paid API for AI agents from api.particle.pro, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Retrieves a single topic node with its breadcrumb ancestor chain and top direct child topics ranked by prominence.
Price / call$0.01
Success—
StatusUnknown
How this service works
Get a topic. Returns a single topic with breadcrumb ancestors and the top direct children by prominence.
Output
Returns a single topic object including its unique ID, name, breadcrumb ancestor chain (showing the full path from root to the topic), and a ranked list of the most prominent direct child topics. This gives a complete view of where a topic sits in the content taxonomy and what sub-topics it contains.
Example use cases
Editorial topic taxonomy navigation
“Can you pull up the Particle Pro topic for 'technology/artificial-intelligence' and show me its parent categories and the top child topics ranked by prominence?”
Content classification for news curation
“I'm building a news feed and need to know where 'climate-change' sits in the topic hierarchy — fetch its ancestor breadcrumbs and direct child topics from Particle Pro.”
Ad targeting topic context lookup
“We're planning a campaign around sports — can you look up that topic in Particle Pro and tell me what sub-topics are most prominent under it along with the full breadcrumb path?”
Technical details
Endpoint
GEThttps://api.particle.pro/v1/topics/:idWhen to prefer
Use this endpoint when you need to understand the hierarchical context of a specific topic — its parent lineage and prominent children — as opposed to listing all topics or searching articles. Prefer it over a search endpoint when you already have a topic ID or well-known ancestry slug. It is ideal for building navigation trees, editorial classification tools, or ad-targeting context systems that require structured topic taxonomy data.
Side effects
- Topic ID or slug not found — returns 404 with no topic data
- Malformed slug or path hash — returns 400 bad request
- Payment not fulfilled via x402 protocol — returns 402 Payment Required
- Rate limit exceeded — returns 429 too many requests
- Ambiguous slug matches multiple topics — may return unexpected topic
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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