# x402-tools Amount Floor Diagnostic

> x402-tools Amount Floor Diagnostic is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Returns the minimum atomic payment floor for a given x402-gated URL, used for diagnostics and facilitator indexing.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/amountfloor?utm_source=zero.xyz
- Price: $0.02/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-amount-floor-diagnostic-3440de70
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_BPBdOWrvGuJP_6_Y9bhqD

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-amount-floor-diagnostic-3440de70
```

Example prompt: What is the minimum payment floor for the x402-gated URL https://openclawproductions.com/api/v1/amountfloor using a facilitator atomic floor of 1000?

## When to prefer this

Use this endpoint when you need to determine the minimum atomic payment floor for an x402-gated URL, particularly when working with the OpenX402 facilitator. It is ideal for pre-flight diagnostics before attempting a paid API call, for facilitator indexing tasks, or for debugging HTTP 402 payment rejections where the floor amount is unclear.

## Known failure modes

- Unpaid requests return HTTP 402 with EIP-3009 extras indicating payment is required
- Invalid or unreachable URL parameter returns an error
- Non-OpenX402 facilitator usage is not supported and may be rejected
- Malformed query parameters may result in validation errors
- GET/HEAD/DELETE are supported; other HTTP methods are rejected

## 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 identifier ('amountfloor'), the human-readable title ('Amount Floor'), the price ('$0.02'), and a diagnostic note clarifying the response is an example paid JSON shape, not a live settlement.

## 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"
      },
      "origin": {
       "type": "string"
      },
      "floor_atomic": {
       "type": "string"
      }
     }
    }
   },
   "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": "amountfloor",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.02",
  "title": "Amount Floor"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-amount-floor-diagnostic-3440de70/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)