Index onlineMerchant portal
Api Endpoint

TradeAPEX corpus expansion

What should your agent read next? Send text from your corpus; get the concepts most strongly linked to it that it does not yet cover, each with the linking terms and measured link strength. Text is not stored. Text with fewer than 3 known terms is not charged.

Open interactive test console

Offering

Provider
tradeapex.ai
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Other
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://tradeapex.ai/x402/expand
MIME type
Not provided
First seen
2026-10-19T02:45:48.894Z
Last seen
Tags
corpus-building, RAG, knowledge-graph, query-expansion, research-agents

Website

Payment pricing

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

Payment option 1
0.02 USDC
Atomic price: 20000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "payTo": "0x22d957d6b9c1eb43c9d246187d6a86876fb5ff61"
  }
]

Observed health

Status
Reachable
Latest latency
44 ms
Average latency
42 ms
HTTP status
405
Last checked
Reachability
100% over 12 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": {
    "body": {
      "properties": {
        "k": {
          "description": "number of suggestions",
          "maximum": 25,
          "minimum": 1,
          "type": "integer"
        },
        "text": {
          "description": "English text from your corpus",
          "maxLength": 20000,
          "type": "string"
        }
      },
      "required": [
        "text"
      ]
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "properties": {
            "k": {
              "description": "number of suggestions",
              "maximum": 25,
              "minimum": 1,
              "type": "integer"
            },
            "text": {
              "description": "English text from your corpus",
              "maxLength": 20000,
              "type": "string"
            }
          },
          "required": [
            "text"
          ]
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST",
            "PUT",
            "PATCH"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}