# GadgetHumans Prediction Scan API

> GadgetHumans Prediction Scan API is a paid API for AI agents from api.gadgethumans.com, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-21).

Returns a list of prediction markets filtered by volume, up to a specified limit

## Facts

- Endpoint: GET https://api.gadgethumans.com/prediction-scan?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gadgethumans-prediction-scan-api-a30abd86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ewSMod1EXD78cDBK6NOn5

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 gadgethumans-prediction-scan-api-a30abd86
```

Example prompt: Show me the top 30 prediction markets that have at least $10,000 in 24-hour trading volume.

## When to prefer this

Use this endpoint when you need to discover or monitor active prediction markets and want control over how many results are returned and a minimum liquidity threshold. It is well-suited for agents doing daily market scans or filtering out illiquid markets before further analysis.

## Known failure modes

- Invalid limit value (must be 1-50) returns an error
- min_volume filter too high results in an empty market list
- Payment not processed or insufficient USDC balance blocks the request
- Rate limiting or service unavailability returns a non-200 response
- Response schema is minimal (example: {ok:true}) suggesting actual schema may differ from documentation

## How this service works

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## Output

Returns a JSON object with a list of prediction markets (up to the specified limit), each containing market details and 24-hour volume data, filtered by the optional minimum volume threshold.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "required": [
      "limit"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "description": "Markets returned (1-50, default 20)"
      },
      "min_volume": {
       "type": "number",
       "description": "Only markets with at least this 24h volume (USD)"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "ok": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gadgethumans-prediction-scan-api-a30abd86/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.gadgethumans.com](https://www.zero.xyz/host/api.gadgethumans.com/llms.txt)