# x402-tools Denylist Check

> x402-tools Denylist Check is a paid API for AI agents from openclawproductions.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).

Checks a public URL or origin against a v2 multi-class denylist to determine if it is blocked or flagged, returning a paid JSON result via x402 micropayment.

## Facts

- Endpoint: GET https://openclawproductions.com/api/v1/denylistcheck?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tools-denylist-check-2efab952
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qkQhYK0yhXKhQFqEyd2U5

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-denylist-check-2efab952
```

Example prompt: Can you check if https://example.com is on the x402-tools denylist — I want to know if that origin is flagged or blocked before I integrate with it.

## When to prefer this

Choose this endpoint when you need to check whether a specific public URL or origin is flagged in the x402-tools v2 multi-class denylist, particularly in workflows that already support the x402 micropayment protocol (EIP-3009). It is especially suitable for automated pre-integration vetting, marketplace moderation pipelines, and safety checks on third-party domains where a $0.01 per-call cost is acceptable. Use it over general blocklist APIs when you need denylist coverage specifically tied to the x402 ecosystem.

## Known failure modes

- HTTP 402 returned if payment (EIP-3009 via x402 protocol) is not provided or invalid
- Missing or malformed 'url' query parameter may result in an error or empty result
- Facilitator must be OpenX402; other facilitators will not be accepted
- URL not publicly accessible may return an inconclusive result
- Network timeout or service unavailability returning 5xx

## How this service works

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

## Output

A JSON object containing the SKU identifier ('denylistcheck'), a title ('Denylist Check'), the price ('$0.01'), and denylist status information for the queried URL. Unpaid requests return HTTP 402 with EIP-3009 payment extras; paid requests return the denylist result.

## 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 origin or resource URL to look up against the v2 multi-class denylist."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "sku": "denylistcheck",
  "note": "Example paid JSON shape. Not a live settle.",
  "price": "$0.01",
  "title": "Denylist Check"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tools-denylist-check-2efab952/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)