# Publish Zero Gas Agent Commerce Field Guide

> Publish Zero Gas Agent Commerce Field Guide is a paid API for AI agents from publish.new, paid per call via x402, $5/call, status unknown (last checked 2026-09-14).

Retrieves the content of the 'Zero Gas Agent Commerce Field Guide' artifact from Publish, a platform for selling digital work instantly via crypto payments.

## Facts

- Endpoint: GET https://publish.new/api/artifact/zgas-001-zero-gas-agent-commerce-field-guide-7ba132fa/content
- Price: $5/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/publish-zero-gas-agent-commerce-field-guide-b971818b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zU3PBGGvCYvRvDAodrMen

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 publish-zero-gas-agent-commerce-field-guide-b971818b
```

Example prompt: Can you get me the Zero Gas Agent Commerce Field Guide from Publish on the Base chain so I can read about gas-free agent transactions?

## When to prefer this

Choose this endpoint when you need the specific 'Zero Gas Agent Commerce Field Guide' artifact from Publish and are willing to pay $5 USDC per access. Prefer this over generic web searches when you need structured, curated field-guide content about zero-gas agent commerce, or when building an agent workflow that needs programmatic access to this specific publication on Base, Tempo, or Ethereum mainnet.

## Known failure modes

- Payment not completed or insufficient USDC balance — endpoint returns 402 Payment Required
- Invalid or unsupported chain value — returns 400 Bad Request
- Invalid ERC-20 contract address for currency — returns 400 or 422
- Artifact unavailable or removed — returns 404 Not Found
- Network congestion or blockchain RPC failure — returns 503 or timeout

## How this service works

Publish and sell your work instantly. No borders, no waiting.

## Output

Returns the full textual content of the 'Zero Gas Agent Commerce Field Guide' artifact — a digital publication covering how AI agents can engage in commerce on blockchain networks without incurring gas fees. The response is gated behind a $5 USDC micropayment via the x402 payment protocol.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "chain": {
   "enum": [
    "base",
    "tempo",
    "mainnet"
   ],
   "type": "string"
  },
  "currency": {
   "type": "string",
   "description": "ERC-20 contract address"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/publish-zero-gas-agent-commerce-field-guide-b971818b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from publish.new](https://www.zero.xyz/host/publish.new/llms.txt)