# Wintel API – Asset Change Detection

> Wintel API – Asset Change Detection is a paid API for AI agents from wintel.canopy.finance, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).

Returns ranked, interpreted period-over-period metric changes for a given country, cryptocurrency, or stock asset

## Facts

- Endpoint: GET https://wintel.canopy.finance/x402/v1/changes/%7Basset_type%7D/%7Basset_id%7D
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/wintel-api-asset-change-detection-0fd963c7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s5WxaF7a2xE0EdwR5_N6C

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 wintel-api-asset-change-detection-0fd963c7
```

Example prompt: What are the most significant ranked metric changes for Bitcoin right now — pull the latest period-over-period shifts from Wintel so I can see what's moved the most.

## When to prefer this

Choose this endpoint when you need to detect and rank what has actually changed for a specific asset over a recent period, rather than getting a static snapshot of scores or a full AI narrative report. It is ideal for event-driven workflows, change monitoring pipelines, and alerting systems where you care about movement and delta rather than absolute values. Prefer it over the full AI analyst report endpoint when you need lightweight, fast signals rather than a full narrative, and over the score endpoint when you specifically want to know what changed, not just what the current score is.

## Known failure modes

- Invalid asset_type — must be a supported enum such as 'country', 'crypto', or 'stock'
- Invalid or unrecognized asset_id — returns 404 or empty result
- Payment not received or insufficient — x402 protocol returns 402 Payment Required
- Rate limit exceeded — too many calls in a short period
- No changes detected for asset in current period — returns empty changes array
- Network or upstream data provider outage — 503 or timeout

## How this service works

Event-driven investment analysis: country risk scoring, change detection, and AI analyst reports for countries, cryptocurrencies, and stocks. Machine-payable endpoints at /x402/v1/* (x402 protocol).

## Output

A ranked list of period-over-period metric changes for the specified asset (country, cryptocurrency, or stock), including change scores, magnitude, direction, and interpreted investment significance for each changed metric.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/wintel-api-asset-change-detection-0fd963c7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from wintel.canopy.finance](https://www.zero.xyz/host/wintel.canopy.finance/llms.txt)