# x402-tools Bazaar Echo Diagnostics

> x402-tools Bazaar Echo Diagnostics is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Returns a paid diagnostic echo response to verify x402 payment flow and EIP-3009 authorization works end-to-end for a given HTTP endpoint

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/bazaarecho?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-bazaar-echo-diagnostics-0aa95798
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_XyYEQ7GdHLUR2LY6wF85b

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-tools-bazaar-echo-diagnostics-0aa95798
```

Example prompt: Run an x402 diagnostics probe on my endpoint using a GET request to confirm the payment flow and EIP-3009 authorization are working correctly with OpenX402 as the facilitator.

## When to prefer this

Choose this endpoint when you need to verify that an x402 payment integration is functioning correctly end-to-end, particularly when using OpenX402 as the facilitator and EIP-3009 authorization. It is the right choice for developers or AI agents that need a real paid diagnostic call to confirm wallet setup, payment header construction, and facilitator connectivity before deploying to production. Prefer it over manual curl tests or mock responses when you need proof that a live $0.03 USDC charge was accepted and echoed back correctly.

## Known failure modes

- HTTP 402 returned with EIP-3009 extras when payment is not included or invalid — request must include a valid x402 payment header
- Unrecognized facilitator — only OpenX402 is supported; other facilitators will be rejected
- Invalid HTTP method — only GET, HEAD, and DELETE are accepted; POST or PUT will fail
- Malformed input object — 'type' must be 'http' and 'method' must be one of the allowed enum values
- Target URL unreachable — if a custom url/origin is provided and it is not publicly accessible, the probe may fail

## How this service works

Paid x402 diagnostics. Unpaid paid-SKU requests return HTTP 402 with eip3009 extras. Facilitator: OpenX402 only.

## Output

Returns a JSON object containing the SKU name ('bazaarecho'), a diagnostic note confirming the shape of a paid response, the price ($0.03), and a title ('Bazaar Echo'). This confirms that the x402 payment was accepted, the EIP-3009 authorization was valid, and the OpenX402 facilitator processed the transaction successfully.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string",
       "description": "Public 402 or well-known URL. Defaults to this origin's Pipe Check."
      },
      "origin": {
       "type": "string",
       "description": "Public origin URL. Alias of url."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  },
  "inputSchema": {
   "type": "object",
   "required": [
    "type",
    "properties"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "object"
    },
    "required": {
     "type": "array",
     "items": {
      "type": "string"
     }
    },
    "properties": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "bazaarecho",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.03",
  "title": "Bazaar Echo"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-bazaar-echo-diagnostics-0aa95798/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from openclawproductions.com](https://www.zero.xyz/host/openclawproductions.com/llms.txt)