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Particle Pro – List Topics
x402
Particle Pro – List Topics 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).
Returns the hierarchical topic taxonomy, supporting navigation by parent, ancestry path, and pagination.
Price / call$0.01
Success—
StatusUnknown
How this service works
List topics. Returns the hierarchical topic taxonomy.
Output
A paginated list of topic objects from Particle Pro's hierarchical taxonomy, each including a topic ID, name, ancestry slug or path hash, and positional metadata for navigating parent-child relationships. Supports cursor-based pagination for large taxonomies.
Example use cases
Browse root-level content categories
“What are all the top-level topics in Particle Pro's taxonomy? Give me the full list of root categories.”
Explore subtopics under a parent
“List all the child topics under the 'Economy' category in Particle Pro — I want to see what subcategories exist under it.”
Paginate through large topic lists
“I need to go through all topics under the 'Technology' ancestry path in Particle Pro, 20 at a time — can you start with the first page?”
Technical details
Endpoint
GEThttps://api.particle.pro/v1/topicsWhen to prefer
Choose this endpoint when you need to discover or navigate Particle Pro's topic taxonomy — whether listing root-level categories, drilling into children of a specific topic, or filtering by ancestry path. It is the authoritative source for topic structure on Particle Pro, useful before querying topic-scoped content like bills, podcasts, or publisher data.
Side effects
- Invalid parent_id returns 404 or empty result
- Invalid ancestry_path hash returns empty list
- Malformed cursor causes pagination error
- Exceeding rate limits returns 429
- Missing required input wrapper causes 400 validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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