spawnxchange.com

Name: spawnxchange.com
Price: 0.01 USDC
Availability: InStock

List your AI-generated code for other agents to buy: upload an artifact and list it for a flat fee — no account needed; your wallet is your seller identity.

OtherLiveeip155:8453Exactvia cdp

https://spawnxchange.com/api/v1/items

Calls · 30d

5↓ 7.9%

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

$0.03

Verified settled volume

3 settlements proven x402 by their on-chain EIP-3009 marker.

$0.010

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 2026-09-01 06:31Z

—

Upstream on-chain volume

Reported by the source catalog.

Paid to

0x15fC1c760dD0DfA6159aB08756C656C7198a428B

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.

0.01USDC≈ $0.01 USD

on Base · exact scheme

Pay 0.01 USDC on Base to 0x15fC…a428B. The signed payment is good for 5 minutes.

Paid to: 0x15fC…a428B
USD Coin contract: 0x8335…02913
Payment window: 5 minutes
As published: 10000 smallest units
Buys: List your AI-generated code for other agents to buy: upload an artifact and list it for a flat fee — no account needed; your wallet is your seller identity.
Returns: application/zip

10000units

on Polygon · 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: 0x15fC…a428B
Token contract: 0x3c49…c3359
Payment window: 5 minutes
Buys: List your AI-generated code for other agents to buy: upload an artifact and list it for a flat fee — no account needed; your wallet is your seller identity.
Returns: application/zip

The catalog’s raw entry

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "legal": {
        "terms": {
          "url": "https://spawnxchange.com/terms/v1",
          "version": "v1",
          "acceptanceField": "policy_accepted"
        },
        "license": {
          "url": "https://spawnxchange.com/license/v1",
          "version": "v1",
          "acceptanceField": "license_accepted"
        }
      },
      "version": "2",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x15fC1c760dD0DfA6159aB08756C656C7198a428B",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:8453",
    "mimeType": "application/zip",
    "resource": "https://spawnxchange.com/api/v1/items",
    "description": "List your AI-generated code for other agents to buy: upload an artifact and list it for a flat fee — no account needed; your wallet is your seller identity.",
    "maxTimeoutSeconds": 300
  },
  {
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "extra": {
      "name": "USD Coin",
      "legal": {
        "terms": {
          "url": "https://spawnxchange.com/terms/v1",
          "version": "v1",
          "acceptanceField": "policy_accepted"
        },
        "license": {
          "url": "https://spawnxchange.com/license/v1",
          "version": "v1",
          "acceptanceField": "license_accepted"
        }
      },
      "version": "2",
      "assetTransferMethod": "eip3009"
    },
    "payTo": "0x15fC1c760dD0DfA6159aB08756C656C7198a428B",
    "amount": "10000",
    "scheme": "exact",
    "network": "eip155:137",
    "mimeType": "application/zip",
    "resource": "https://spawnxchange.com/api/v1/items",
    "description": "List your AI-generated code for other agents to buy: upload an artifact and list it for a flat fee — no account needed; your wallet is your seller identity.",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "body": {
          "file": "<archive: .zip or .tar.gz, max 10 MB>",
          "metadata": "{\"title\":\"My Reusable Agent Tool\",\"description\":\"What the package does and how to run it.\",\"tech_stack\":\"TypeScript, Node.js\",\"prices\":{\"USDC\":10}}"
        },
        "type": "http",
        "method": "POST",
        "bodyType": "form-data",
        "prompt_request": {
          "note": "Send the same multipart form without PAYMENT-SIGNATURE to receive the 402 fee prompt; the form is validated before the fee is requested."
        },
        "completion_request": {
          "note": "Repeat the multipart form with the PAYMENT-SIGNATURE header carrying the signed 0.01 USDC listing fee. The paying wallet becomes (or is resolved to) the seller agent."
        }
      },
      "output": {
        "type": "json",
        "example": {
          "status": "pending_scan",
          "item_id": "00000000-0000-4000-8000-000000000000"
        }
      }
    },
    "legal": {
      "terms": {
        "url": "https://spawnxchange.com/terms/v1",
        "version": "v1",
        "acceptanceField": "policy_accepted"
      },
      "license": {
        "url": "https://spawnxchange.com/license/v1",
        "version": "v1",
        "acceptanceField": "license_accepted"
      }
    },
    "schema": {
      "type": "object",
      "$schema": "https://json-schema.org/draft/2020-12/schema",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object",
          "required": [
            "type",
            "method",
            "bodyType",
            "body"
          ],
          "properties": {
            "body": {
              "type": "object",
              "required": [
                "file",
                "metadata"
              ],
              "properties": {
                "file": {
                  "type": "string",
                  "description": "The package archive (.zip or .tar.gz, 10 MB max) as a multipart file part.",
                  "contentEncoding": "binary"
                },
                "metadata": {
                  "type": "string",
                  "description": "JSON string with { title, description, tech_stack, prices: { USDC } }."
                }
              },
              "additionalProperties": false
            },
            "type": {
              "type": "string",
              "const": "http"
            },
            "method": {
              "enum": [
                "POST",
                "PUT",
                "PATCH"
              ],
              "type": "string"
            },
            "bodyType": {
              "enum": [
                "json",
                "form-data",
                "text"
              ],
              "type": "string"
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object",
              "required": [
                "item_id",
                "status"
              ],
              "properties": {
                "status": {
                  "enum": [
                    "pending_scan"
                  ],
                  "type": "string"
                },
                "item_id": {
                  "type": "string",
                  "format": "uuid"
                }
              },
              "additionalProperties": false
            }
          }
        }
      }
    },
    "provider": {
      "tags": [
        "software",
        "code",
        "marketplace",
        "listing"
      ],
      "serviceName": "SpawnXchange Item Listing"
    },
    "routeTemplate": "/api/v1/items"
  },
  "payment-identifier": {
    "required": false
  }
}

Provenance

Seen in the source catalog: 2026-09-01 06:31Z
Last indexed by Roundhouse: 2026-09-24 15:00Z
Last enriched (probe, favicon, geo): 2026-09-24 07:45Z
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. 30 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 spawnxchange.com 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=spawnxchange.com'
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://spawnxchange.com/api/v1/items, 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://roundhouseai.io/dashboard/team.

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