Api Endpoint

badhttp

badhttp /402/pay: a real x402 v2 paywall for testing clients. Pay 0.01 USDC on Base mainnet and get a 200 with a PAYMENT-RESPONSE receipt and the transaction hash. Nothing else is sold; sibling endpoints under /402 misbehave on purpose.

Open interactive test console

Offering

Provider: badhttp.dev
Method: GET
Offering type: Api Endpoint
Transport type: http
Category: Blockchain And Crypto
Delivery: Not provided
Pricing model: Not provided
x402 version: 2

Endpoint context

URL: https://badhttp.dev/402/pay/base
MIME type: application/json
First seen: 2026-10-16T01:50:19.913Z
Last seen: 2026-11-02T09:09:08.580Z
Tags: testing, HTTP, X402, edge-cases, developer-tools

Website

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": "0x2b14ad50d63c7fee5a33847f95153ac37a690170"
  }
]

Observed health

Status: Healthy
Latest latency: 203 ms
Average latency: 378 ms
HTTP status: 402
Last checked: 2026-11-02T09:09:08.575Z
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

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "network": {
          "type": "string",
          "enum": [
            "base",
            "base-sepolia"
          ],
          "description": "base-sepolia is test USDC (the default); base is real USDC on Base mainnet"
        },
        "amount": {
          "type": "string",
          "pattern": "^\\d+(\\.\\d{1,6})?$",
          "description": "price in USD, 0.001-1, default 0.01"
        }
      }
    },
    "headers": {
      "type": "object",
      "additionalProperties": {
        "type": "string"
      }
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "headers": {
          "additionalProperties": {
            "type": "string"
          },
          "type": "object"
        },
        "method": {
          "enum": [
            "GET",
            "HEAD",
            "DELETE"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "amount": {
              "description": "price in USD, 0.001-1, default 0.01",
              "pattern": "^\\d+(\\.\\d{1,6})?$",
              "type": "string"
            },
            "network": {
              "description": "base-sepolia is test USDC (the default); base is real USDC on Base mainnet",
              "enum": [
                "base",
                "base-sepolia"
              ],
              "type": "string"
            }
          },
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}