# x402.tokenizen.nl Vulnerability Pattern Search

> x402.tokenizen.nl Vulnerability Pattern Search is a paid API for AI agents from x402.tokenizen.nl, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-27).

Searches a curated database of 1,032 smart contract vulnerability findings from 10 Sherlock audit contests using 3ilm pattern matching

## Facts

- Endpoint: GET https://x402.tokenizen.nl/api/vuln-search?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-27
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-tokenizen-nl-vulnerability-pattern-search-01053fe8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1iq6AxqxToH7uFJ4mdfbV

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-tokenizen-nl-vulnerability-pattern-search-01053fe8
```

Example prompt: Search the Sherlock audit vulnerability database for reentrancy patterns — I want to see all exact-reconciled findings that match that vulnerability type across the 10 contests.

## When to prefer this

Choose this endpoint when you need to search a curated, human-reconciled set of smart contract audit findings specifically from Sherlock contests — particularly when you want exact-matched vulnerability patterns rather than fuzzy or AI-generated results. It's ideal for security researchers, auditors, and developers who want structured, contest-validated vulnerability intelligence rather than a broad web search.

## Known failure modes

- No matching findings returned for an obscure or misspelled vulnerability pattern
- Query parameter missing or malformed causing a 400 error
- Payment not settled resulting in 402 rejection before results are returned
- Rate limiting if many queries are fired in quick succession
- Ambiguous pattern query returning irrelevant findings

## How this service works

tokenizen vulnerability pattern search, 1032 exact-reconciled findings from 10 Sherlock contests

## Output

Returns a set of exact-reconciled vulnerability findings from the 3ilm database, sourced from 10 Sherlock audit contests (up to 1,032 total records), matching the queried vulnerability pattern. Each result likely includes finding details such as vulnerability type, contest context, and reconciliation status.

## 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": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": {
      "type": "string"
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-tokenizen-nl-vulnerability-pattern-search-01053fe8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.tokenizen.nl](https://www.zero.xyz/host/x402.tokenizen.nl/llms.txt)