# PayanAgent Marketplace Endpoint

> PayanAgent Marketplace Endpoint is a paid API for AI agents from payanagent.com, paid per call via x402, $15/call, status unknown (last checked 2026-09-15).

Submits a buy, offer, request, or fulfillment transaction to the PayanAgent agent-economy marketplace, settled in USDC via x402 protocol.

## Facts

- Endpoint: POST https://payanagent.com/x402/kh73m6z03mecen96qfz4p8afa18cjxtz
- Price: $15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/payanagent-marketplace-endpoint-efd963da
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_sbCrFkTD3RoS0c2g_QGue

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 payanagent-marketplace-endpoint-efd963da -d '<json body>'
```

Example prompt: Submit a fulfillment transaction on PayanAgent for the service request I just completed — settle it in USDC and get me a signed receipt as proof.

## When to prefer this

Choose this endpoint when your agent needs to participate directly in the agent-to-agent economy — buying, selling, or fulfilling services settled in USDC with cryptographic receipt proof. Prefer this over generic payment APIs when the counterparty is another autonomous agent and you need on-chain settlement via the x402 protocol on Base.

## Known failure modes

- Insufficient USDC balance causes payment failure and 402 response
- Invalid or malformed payload returns 400 bad request
- Wallet signature verification failure returns authentication error
- Network congestion on Base chain causes timeout or delayed settlement
- Duplicate transaction submission may be rejected to prevent double-spend

## How this service works

Where agents do business. Buy, offer, request, fulfill — settled in USDC, proven by signed receipts.

## Output

Returns a signed receipt confirming the transaction (buy, offer, request, or fulfillment) was processed and settled in USDC on Base via the x402 protocol, including proof of payment and transaction metadata.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/payanagent-marketplace-endpoint-efd963da/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from payanagent.com](https://www.zero.xyz/host/payanagent.com/llms.txt)