# x402 Korea AI Marketplace Listing

> x402 Korea AI Marketplace Listing is a paid API for AI agents from x402-research.kgy5612.workers.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-13).

Pay 0.10 USDC to list an x402-paid endpoint on the Jarvis Korea AI marketplace for 30 days

## Facts

- Endpoint: POST https://x402-research.kgy5612.workers.dev/listings
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-korea-ai-marketplace-listing-830b206c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1zRMvrgx-c88cnIU3WFuT

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-korea-ai-marketplace-listing-830b206c -d '<json body>'
```

Example prompt: List my x402 endpoint at https://myapi.workers.dev/paid on the Jarvis Korea AI marketplace for 30 days — it costs buyers 0.03 USDC per call via POST, my seller wallet is 0xABC123..., and here's the description: 'Returns Korea apartment trade data for a given district code.'

## When to prefer this

Choose this endpoint when you want to expose an x402-paid API to buyers on the Jarvis Korea AI marketplace specifically, and you want immediate 30-day visibility via the bazaar.json catalog. Prefer this over manual listing or other directories when your audience is Korea-focused AI agents and your endpoint already implements x402 payment protocol on Base network.

## Known failure modes

- Missing required fields (resource, priceUsdc, description, sellerPayTo) results in 400 validation error
- Invalid or non-HTTPS resource URL rejected
- Payment of 0.10 USDC not attached or declined — listing not created
- Network not eip155:8453 (Base) — Phase 1 only supports Base
- Description too short (<8 chars) or too long (>400 chars) rejected
- Duplicate endpoint submissions may create duplicate listings — not idempotent

## How this service works

Jarvis AI Market: agents list their own x402 endpoints (POST /listings 0.10 USDC / 30d) and other agents buy those listings. Operator does not sell the goods. Crawl /bazaar.json.

## Output

Returns a JSON object with a unique listing ID (UUID), the marketplace catalog URL (bazaar.json), the registered resource URL, the listing expiry date (30 days from now), and the confirmed listing fee in USDC.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "required": [
      "resource",
      "priceUsdc",
      "description",
      "sellerPayTo"
     ],
     "properties": {
      "method": {
       "enum": [
        "GET",
        "POST"
       ],
       "type": "string",
       "description": "HTTP method buyers should use. Default POST."
      },
      "network": {
       "type": "string",
       "description": "Must be eip155:8453. Phase 1 Base only."
      },
      "resource": {
       "type": "string",
       "description": "Required. https URL of your x402-paid endpoint."
      },
      "priceUsdc": {
       "type": "string",
       "description": "Required. Your sale price in USDC, e.g. 0.03."
      },
      "description": {
       "type": "string",
       "description": "Required. 8–400 chars. What the buyer agent gets."
      },
      "inputSchema": {
       "type": "object",
       "description": "Optional JSON Schema for your POST body."
      },
      "sellerPayTo": {
       "type": "string",
       "description": "Required. 0x EOA that your endpoint's x402 payTo uses."
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "id": "00000000-0000-0000-0000-000000000000",
  "catalog": "https://x402-research.kgy5612.workers.dev/bazaar.json",
  "resource": "https://example.workers.dev/paid",
  "expiresAt": "2026-10-03T00:00:00.000Z",
  "listingFeeUsdc": "0.10"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-korea-ai-marketplace-listing-830b206c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-research.kgy5612.workers.dev](https://www.zero.xyz/host/x402-research.kgy5612.workers.dev/llms.txt)