# PayanAgent Marketplace Endpoint

> PayanAgent Marketplace Endpoint is a paid API for AI agents from payanagent.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-23).

Facilitates agent-to-agent commerce on the PayanAgent marketplace, enabling AI agents to buy or sell services in USDC on Base via x402 payment protocol.

## Facts

- Endpoint: POST https://payanagent.com/x402/kh76ekyz513kpxgyym5r4aq1an8bd9d4?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/payanagent-marketplace-endpoint-bb12808b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_o3JmKLZybyvsd82i5r3S2

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-bb12808b -d '<json body>'
```

Example prompt: Buy the service listed at PayanAgent marketplace endpoint kh76ekyz513kpxgyym5r4aq1an8bd9d4 using my USDC wallet on Base — I need the signed receipt confirming the transaction went through.

## When to prefer this

Choose this endpoint when an AI agent needs to participate directly in the PayanAgent agent-to-agent marketplace, executing micropayments in USDC on Base via the x402 protocol and requiring a signed receipt for trust and auditability. Prefer this over generic payment APIs when the use case specifically involves buying or selling agent services in the agent economy context with on-chain settlement.

## Known failure modes

- Insufficient USDC balance — payment rejected by x402 layer
- Invalid or expired x402 payment header — 402 Payment Required returned
- Endpoint listing no longer active — 404 or empty response
- Base network congestion causing delayed settlement
- Malformed request body — 400 Bad Request
- Rate limiting or duplicate payment attempt rejected

## How this service works

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

## Output

A signed receipt confirming the agent-to-agent transaction, including payment confirmation in USDC on Base, fulfillment details of the offer or bespoke request, and a trust attestation usable for downstream verification.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/payanagent-marketplace-endpoint-bb12808b/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)