x402engine.app

108 production APIs behind HTTP 402 micropayments. 72 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, USDm on MegaETH, or USDC on Solana.

SearchLiveeip155:8453Exactvia cdp

https://x402engine.app/api/embeddings

Calls · 30d

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far.

$25.18

Verified settled volume

A floor: summed over 5,000 of 13,872 verified settlements.

$0.0010

Listed price

As published in the catalog. Always read the live 402 before paying.

Calls · 30d

Upstream's own call count for this endpoint, not ours.

Unique payers · 30d

Last called 2026-08-25 09:08Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629

The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.

Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Provider

The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.001USDC≈ $0.001 USD

on Base · exact scheme

Pay 0.001 USDC on Base to 0x7dd5…c2629. The signed payment is good for 5 minutes.

Paid to: 0x7dd5…c2629
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 1000 smallest units

1000000000000000units

on eip155:4326 · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: 0x7dd5…c2629
Token contract: 0xFAfD…079E7
Payment window: 5 minutes

1000units

on solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · exact scheme

That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.

Paid to: Gzehfs…WQQWa
Token contract: EPjFWd…TDt1v
Payment window: 5 minutes

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
    "amount": "1000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0xFAfDdbb3FC7688494971a79cc65DCa3EF82079E7",
    "extra": {
      "name": "USDm",
      "version": "2"
    },
    "payTo": "0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629",
    "amount": "1000000000000000",
    "scheme": "exact",
    "network": "eip155:4326",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "extra": {
      "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
    },
    "payTo": "Gzehfseq1k9AcHFSoV7qHmDGQx92nLMw78XXdqVWQQWa",
    "amount": "1000",
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "text": "hello world",
          "texts": [
            "hello",
            "world"
          ]
        },
        "type": "http",
        "method": "POST",
        "bodyType": "json"
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "bodyType",
            "body",
            "method"
          ],
          "properties": {
            "body": {
              "type": "object",
              "anyOf": [
                {
                  "required": [
                    "text"
                  ]
                },
                {
                  "required": [
                    "texts"
                  ]
                }
              ],
              "properties": {
                "text": {
                  "type": "string",
                  "example": "hello world",
                  "description": "Single text to embed"
                },
                "texts": {
                  "type": "array",
                  "items": {
                    "type": "string",
                    "example": "hello"
                  },
                  "example": [
                    "hello",
                    "world"
                  ],
                  "maxItems": 100,
                  "minItems": 1,
                  "description": "Array of texts to embed (1-100)"
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        }
      }
    }
  }
}

Provenance

Seen in the source catalog: 2026-08-25 09:08Z
Last indexed by Roundhouse: 2026-09-04 20:40Z
Last enriched (probe, favicon, geo): 2026-09-01 20:45Z
x402 version: 2
Max timeout: 300s
Liveness probe: HTTP 200

Report

Hand this page to an agent

Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.

GET api.roundhouseai.io/v0/endpoints

This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md

Show the prompt

Using Roundhouse, look up the x402 service x402engine.app and tell me whether it is
worth paying: what a call costs, whether the endpoint answered when last probed, and what
its payment record actually shows.

curl -s 'https://api.roundhouseai.io/v0/endpoints?q=x402engine.app'
curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>'

Then call it: read the price from the live 402 at https://x402engine.app/api/embeddings, never from
a cached figure, and pay with an x402 client.

The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except
/v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402,
or use an organization key from https://app.roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://app.roundhouseai.io/skill.md first — it is the whole procedure.