# RTK Motion Spotter Commercial-Truck Detection Sample Corpus

> RTK Motion Spotter Commercial-Truck Detection Sample Corpus is a paid API for AI agents from api.rtkmotion.io, paid per call via x402, $0.25/call, status down (last checked 2026-09-16).

Returns a fixed 10-crop trial slice of the 1,877-crop commercial-truck detection dataset with label rows and 15-minute signed download URLs, for evaluating corpus quality before purchasing the full tier.

## Facts

- Endpoint: GET https://api.rtkmotion.io/paid/spotter-sample
- Price: $0.25/call
- Payment: x402
- Status: down
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/rtk-motion-spotter-commercial-truck-detection-sample-corpus-4bfd8d50
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2OVXO7L5iYmljvGbeFsrP

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 rtk-motion-spotter-commercial-truck-detection-sample-corpus-4bfd8d50
```

Example prompt: Can you pull the Spotter sample trial slice — the 10-crop commercial-truck detection set with label rows — so I can check the annotation quality before deciding whether to buy the full corpus?

## When to prefer this

Use this endpoint when you need to evaluate the RTK Motion Spotter commercial-truck detection corpus quality before purchasing the full 1,877-crop dataset. It is the correct choice for trial/preview use cases where you want annotated image crops with labels but do not yet need the complete corpus. Prefer the full 'get_spotter_cv' tier once quality is confirmed.

## Known failure modes

- Signed URLs expire after 15 minutes — any download attempt after expiry will fail with a 403/401 error
- Invalid or unsupported scope parameter value returns an error (only 'sample' is valid)
- Payment failure (x402 protocol) results in no data returned
- Rate limiting or quota exceeded if called too frequently

## How this service works

RTK Motion — Spotter commercial-truck detection corpus TRIAL: fixed 10-crop slice of the geo-stripped 1,877-crop corpus with label rows, to evaluate quality before the $50 full tier. Faces, bystander plates and burned-in GPS blurred; commercial carriers only. 15-min signed URLs.

## Output

A fixed 10-crop slice of the geo-stripped commercial-truck detection corpus, including label rows for each crop and 15-minute signed URLs for image download. Faces, bystander license plates, and burned-in GPS data are blurred. Only commercial carrier images are included.

## 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": [],
     "properties": {
      "scope": {
       "type": "string",
       "description": "Trial slice selector. Only 'sample' is supported: a fixed 10-crop slice with its label rows. The full corpus is the $50 get_spotter_cv tier."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/rtk-motion-spotter-commercial-truck-detection-sample-corpus-4bfd8d50/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.rtkmotion.io](https://www.zero.xyz/host/api.rtkmotion.io/llms.txt)