Api Endpoint

Particle Pro

List topics. Returns the hierarchical topic taxonomy.

Open interactive test console

Offering

Provider
api.particle.pro
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Api
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://api.particle.pro/v1/topics
MIME type
application/json
First seen
2026-10-16T01:52:52.778Z
Last seen
Tags
topics, podcasts, media intelligence, particle pro

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.01 USDC
Atomic price: 10000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "10000",
    "payTo": "0x59f3a6dcb6f482c53872dd8f8f9e1f9161a1c5f7"
  }
]

Observed health

Status
Healthy
Latest latency
79 ms
Average latency
446 ms
HTTP status
402
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "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"
        },
        "q": {
          "description": "Find topics by name: exact names first, then names starting with q, then (when q has a word of 3 or more characters) names containing it, each ranked by story coverage. With parent_id or ancestry_path_prefix, searches that topic's descendants. Name search covers topics with at least 5 story clusters; browse with parent_id to reach the long tail.",
          "type": "string"
        }
      },
      "type": "object"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method"
  ],
  "type": "object"
}

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"
            },
            "q": {
              "description": "Find topics by name: exact names first, then names starting with q, then (when q has a word of 3 or more characters) names containing it, each ranked by story coverage. With parent_id or ancestry_path_prefix, searches that topic's descendants. Name search covers topics with at least 5 story clusters; browse with parent_id to reach the long tail.",
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}