# Human Judgment Crowdsourcing via x402 Micropayment

> Human Judgment Crowdsourcing via x402 Micropayment is a paid API for AI agents from x402helper.xyz, paid per call via x402, $0.22/call, status unknown (last checked 2026-11-07).

Submits a question to human crowd workers and collects consensus answers, paid per-response via USDC micropayment.

## Facts

- Endpoint: GET https://x402helper.xyz/89e509/humanverify/create?utm_source=zero.xyz
- Price: $0.22/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-07
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/human-judgment-crowdsourcing-via-x402-micropayment-f7a078f0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3Ho1a-5J4wcuvTcpksIOl

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 human-judgment-crowdsourcing-via-x402-micropayment-f7a078f0
```

Example prompt: Ask 3 human workers whether the product name 'Kazenoha' sounds natural to a native Japanese speaker — label the answers as 'natural', 'awkward', or 'wrong', and pay each worker $0.03.

## When to prefer this

Choose this endpoint when you need genuine human judgment on subjective, nuanced, or culturally specific questions that LLMs cannot reliably answer — such as native-speaker naturalness checks, content moderation edge cases, or translation quality ratings. Prefer it over LLM-only approaches when human consensus is required for trust, compliance, or QA pipelines. It is best suited for asynchronous batch workflows where a short wait for human responses is acceptable.

## Known failure modes

- Missing required 'question' parameter returns an error
- Invalid 'responses' value above max of 5 rejected
- Reward value outside 0.02–0.05 range is clamped or rejected
- Payment failure via x402 USDC prevents task from being submitted
- Slow fill rate if reward is set too low or question is complex
- No consensus reached if human answers are evenly split across labels

## How this service works

X402 micropayments server — AI agents pay USDC for OFAC screening, rates, and billing verification.

## Output

A JSON object with a 'success' boolean and a 'result' object containing the consensus answer — either a majority-vote category label (if labels were provided) or a free-text consensus string — aggregated from the specified number of human respondents.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "question"
     ],
     "properties": {
      "labels": {
       "type": "string",
       "default": null,
       "description": "Optional CSV of allowed answer labels (e.g. 'natural,awkward,wrong'). If given, the verdict is a categorical majority vote; omit for a free-text consensus."
      },
      "reward": {
       "type": "number",
       "default": null,
       "description": "USD paid to each human answer. Default 0.03, clamped 0.02–0.05 (higher = faster fill). Our WURK cost is exactly responses×reward."
      },
      "context": {
       "type": "string",
       "default": null,
       "description": "Optional extra context shown to the human worker."
      },
      "question": {
       "type": "string",
       "default": null,
       "description": "The judgement question for a human to answer (e.g. 'Is this Japanese product name natural to a native speaker?')."
      },
      "responses": {
       "type": "integer",
       "default": null,
       "description": "How many human answers to collect (target N). Default 3, max 5."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "success": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/human-judgment-crowdsourcing-via-x402-micropayment-f7a078f0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402helper.xyz](https://www.zero.xyz/host/x402helper.xyz/llms.txt)