mirrored listing x402 eip155:8453

Add, subtract, multiply or divide two fractions and return the exact, fully-reduced result

Add, subtract, multiply or divide two fractions and return the exact, fully-reduced result. All computation is done in BigInt so there is no floating-point error. Dividing by a zero fraction is a clean 400.

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2000 (raw units)
price
3
calls / 30d
1
unique payers
2026-09-06
updated

Provider

fraction.openverbs.com · discovered, not yet claimed by its owner

Payment (x402 accepts[])

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "maxTimeoutSeconds": 300
  }
]

Output schema

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "a": {
            "denominator": 1,
            "numerator": 1
          },
          "b": {
            "denominator": 1,
            "numerator": 1
          },
          "operation": "add"
        },
        "bodyType": "json",
        "method": "POST",
        "type": "http"
      }
    },
    "schema": {
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "properties": {
        "input": {
          "additionalProperties": false,
          "properties": {
            "body": {
              "additionalProperties": false,
              "properties": {
                "a": {
                  "additionalProperties": false,
                  "description": "First fraction.",
                  "properties": {
                    "denominator": {
                      "description": "Default 1.",
                      "type": "integer"
                    },
                    "numerator": {
                      "type": "integer"
                    }
                  },
                  "required": [
                    "numerator"
                  ],
                  "type": "object"
                },
                "b": {
                  "additionalProperties": false,
                  "description": "Second fraction.",
                  "properties": {
                    "denominator": {
                      "description": "Default 1.",
                      "type": "integer"
                    },
                    "numerator": {
                      "type": "integer"
                    }
                  },
                  "required": [
                    "numerator"
                  ],
                  "type": "object"
                },
                "operation": {
                  "description": "The operation.",
                  "enum": [
                    "add",
                    "subtract",
                    "multiply",
                    "divide"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "a",
                "b",
                "operation"
              ],
              "type": "object"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "type": {
              "const": "http",
              "type": "string"
            }
          },
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "type": "object"
        }
      },
      "required": [
        "input"
      ],
      "type": "object"
    }
  }
}

Use it

curl

curl "https://fraction.openverbs.com/v1/arithmetic"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://fraction.openverbs.com/v1/arithmetic");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://fraction.openverbs.com/v1/arithmetic")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Machine-readable

Everything on this page is also available as clean JSON at /resources/12738.json, and this resource appears in /discovery/resources and /discovery/search.