{"slug":"api-particle-pro-v1-topics-e4a4ce","title":"List topics","host":"api.particle.pro","method":"GET","resource":"https://api.particle.pro/v1/topics","category":"other","description":"List topics. Returns the hierarchical topic taxonomy.","price_listed":0.01,"price_asked":0.01,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":201,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"ancestry_path":{"description":"Filter by exact ancestry path hash.","type":"string"},"ancestry_path_prefix":{"description":"Filter by ancestry path prefix (all descendants).","type":"string"},"cursor":{"description":"Opaque pagination cursor from previous response","type":"string"},"limit":{"description":"Results per page","format":"int64","type":"integer"},"parent_id":{"description":"Get children of this topic. Accepts topic ID, ancestry slug, or ancestry path hash. Omit for top-level roots.","type":"string"}},"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.01,"price_match":true,"latency_ms":201,"error":null}],"description_full":"List topics. Returns the hierarchical topic taxonomy.","last_updated":"2026-09-14T19:57:06.327Z","schemes":["exact"]}