Api Endpoint

AgentFeed

Paper by DOI: title, year, authors, venue, citation count, open-access URL and the abstract where OpenAlex holds it (CC0 data). Use when you need to answer: What is the paper behind this DOI? The DOI goes in the path as written, slash included: /api/paper/10.1038/nature14539.

Open interactive test console

Offering

Provider: x402.ochinimus.app
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Science And Education
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://x402.ochinimus.app/api/paper/10.1038%2Fnature14539
MIME type: application/json
First seen: 2026-10-16T01:52:25.593Z
Last seen: 2026-11-01T15:20:23.051Z
Tags: Research, papers, academic, doi, openalex, citations

Website

Payment pricing

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

Payment option 1: 0.005 USDC
Atomic price: 5000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 2: 0.005 USDC
Atomic price: 5000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 3: 0.005 USDC
Atomic price: 5000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 4: 0.005 USDC
Atomic price: 5000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Payment option 5: 5000 atomic units
Atomic price: 5000 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Payment option 6: 0.0025 USDC
Atomic price: 2500 · Network: eip155:8453 · Asset: USDC · Scheme: batch-settlement
Payment option 7: 0.0025 USDC
Atomic price: 2500 · Network: eip155:137 · Asset: USDC · Scheme: batch-settlement
Payment option 8: 0.0025 USDC
Atomic price: 2500 · Network: eip155:42161 · Asset: USDC · Scheme: batch-settlement
Payment option 9: 2500 atomic units
Atomic price: 2500 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Payment option 10: 0.005 USDC
Atomic price: 5000 · Network: eip155:10 · Asset: USDC · Scheme: exact
Payment option 11: 0.005 USDC
Atomic price: 5000 · Network: eip155:143 · Asset: USDC · Scheme: exact
Payment option 12: 0.005 USDC
Atomic price: 5000 · Network: eip155:43114 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "5000",
    "payTo": "4a8o45skRPcyjAdyR8yES215Swvh8uTpZD6KLarhxCJ7"
  },
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "5000",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "5000",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "5000",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "5000",
    "payTo": "0x0Cf44185564F2b72E291050DC79E578429E52f83"
  },
  {
    "scheme": "batch-settlement",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2500",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "batch-settlement",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "2500",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "batch-settlement",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "2500",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "2500",
    "payTo": "0xA853129ACF56A851f9d51CD8cb47619465260Fa9"
  },
  {
    "scheme": "exact",
    "network": "eip155:10",
    "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
    "amount": "5000",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "exact",
    "network": "eip155:143",
    "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
    "amount": "5000",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  },
  {
    "scheme": "exact",
    "network": "eip155:43114",
    "asset": "0xB97EF9Ef8734C71904D8002F8b6Bc66Dd9c48a6E",
    "amount": "5000",
    "payTo": "0x22DB3A9686EE5261e7Bf3ed4f91277232E8076e6"
  }
]

Observed health

Status: Healthy
Latest latency: 1246 ms
Average latency: 668 ms
HTTP status: 402
Last checked: 2026-11-01T13:35:03.266Z
Reachability: 100% over 13 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": {},
      "required": []
    },
    "pathParams": {
      "type": "object",
      "properties": {
        "doi": {
          "type": "string",
          "minLength": 7,
          "maxLength": 300,
          "pattern": "10\\.\\d{4,9}(?:\\/|%2[Ff])\\S+",
          "description": "a DOI such as 10.1038/nature14539, sent in the path as written (its slash as %2F also works)"
        }
      },
      "required": [
        "doi"
      ]
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "pathParams": {
          "properties": {
            "doi": {
              "description": "a DOI such as 10.1038/nature14539, its slash sent as %2F in the path",
              "type": "string"
            }
          },
          "required": [
            "doi"
          ],
          "type": "object"
        },
        "queryParams": {
          "properties": {},
          "required": [],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "data": {
              "properties": {
                "abstract": {},
                "authors": {
                  "type": "array"
                },
                "authors_total": {
                  "type": "number"
                },
                "cached": {
                  "type": "boolean"
                },
                "cited_by": {
                  "type": "number"
                },
                "doi": {
                  "type": "string"
                },
                "language": {
                  "type": "string"
                },
                "license": {
                  "type": "string"
                },
                "open_access": {
                  "type": "object"
                },
                "openalex_id": {
                  "type": "string"
                },
                "source": {
                  "type": "string"
                },
                "title": {
                  "type": "string"
                },
                "type": {
                  "type": "string"
                },
                "venue": {
                  "type": "string"
                },
                "year": {
                  "type": "number"
                }
              },
              "type": "object"
            },
            "paid": {
              "type": "boolean"
            },
            "tool": {
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}