Api Endpoint

api.x402node.dev

Search PubMed biomedical literature via NCBI and return article title, authors, journal, year, PMID and link for each match. pubmed search, biomedical papers, medical literature search, ncbi entrez, research citations Accepts payment on Base or Solana — either network works.

Open interactive test console

Offering

Provider: api.x402node.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Health And Medicine
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://api.x402node.dev/citation/pubmed
MIME type: application/json
First seen: 2026-10-16T01:58:26.121Z
Last seen: 2026-11-02T03:52:29.399Z
Tags: None supplied

Website

Payment pricing

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

Payment option 1: 0.006 USDC
Atomic price: 6000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2: 0.006 USDC
Atomic price: 6000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "6000",
    "payTo": "0x4466d4A84b7c49a6A094ec6eef4a0712D6dd125e"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "6000",
    "payTo": "9urRvUx69HqAopg1JGV9P9wR7JdKoztzdkuNyJ8Eo1up"
  }
]

Observed health

Status: Healthy
Latest latency: 1263 ms
Average latency: 977 ms
HTTP status: 402
Last checked: 2026-11-02T03:52:29.394Z
Reachability: 100% over 9 checks

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

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "query": {
          "type": "string",
          "description": "Search terms (required)"
        },
        "q": {
          "type": "string",
          "description": "Search query (optional)"
        },
        "limit": {
          "type": "string",
          "description": "Max results, default 5, max 10"
        }
      },
      "required": [
        "query"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "type": "object",
  "properties": {
    "input": {
      "type": "object",
      "properties": {
        "type": {
          "type": "string",
          "const": "http"
        },
        "method": {
          "type": "string",
          "enum": [
            "GET"
          ]
        },
        "queryParams": {
          "type": "object",
          "properties": {
            "query": {
              "type": "string",
              "description": "Search terms (required)"
            },
            "q": {
              "type": "string",
              "description": "Search query (optional)"
            },
            "limit": {
              "type": "string",
              "description": "Max results, default 5, max 10"
            }
          },
          "required": [
            "query"
          ]
        }
      },
      "required": [
        "type",
        "method"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "input"
  ]
}