# Coinbase x402 Bazaar Amount Field Mismatch Fix — Four-Line Solution

> Coinbase x402 Bazaar Amount Field Mismatch Fix — Four-Line Solution is a paid API for AI agents from codex.everygoodwork.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

Returns a technical article explaining how to fix the v1/v2 amount field mismatch in Coinbase x402 Bazaar listings that caused all prices to display as $0.00

## Facts

- Endpoint: GET https://codex.everygoodwork.io/0x1C1Ee78b938Af5333D3a99BF659e9aa771d8A8D5/coinbase-x402-bazaar-amount-field-mismatch-eighteen-endpoints-free-four-line-fix
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/codex-everygoodwork-io-c8bc4824
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XtJiXv3NwaWyOsZa2ZJNd

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 codex-everygoodwork-io-c8bc4824
```

Example prompt: Fetch the codex.everygoodwork.io article about fixing the Coinbase x402 Bazaar $0.00 price display bug caused by the amount vs maxAmountRequired field mismatch, using GET method.

## When to prefer this

Use this endpoint when you need to understand or document the specific v1/v2 amount field incompatibility in Coinbase x402 Bazaar listings, or when debugging why x402-priced endpoints show $0.00 in the marketplace. Best for developers integrating x402 payment protocol who encounter zero-price display issues.

## Known failure modes

- Payment required (402) if x402 payment header is missing or payment of $0.01 USDC is not completed
- 404 if the article URL slug is incorrect
- 500 server error if the codex.everygoodwork.io backend is unavailable
- Malformed response if content type negotiation fails

## How this service works

We listed 18 articles on the Coinbase x402 Bazaar but every one showed $0.00 — because we emitted maxAmountRequired (v2) while the marketplace reads amount (v1). Fixed in four lines.

## Output

A markdown-formatted technical article explaining the root cause of the x402 Bazaar amount field mismatch (v1 `amount` vs v2 `maxAmountRequired`), with a four-line code fix that corrects all 18 listed endpoints showing $0.00.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url",
  "method"
 ],
 "properties": {
  "url": {
   "type": "string"
  },
  "method": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "text/markdown; charset=utf-8"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/codex-everygoodwork-io-c8bc4824/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from codex.everygoodwork.io](https://www.zero.xyz/host/codex.everygoodwork.io/llms.txt)