ds4eval - FX monitor and alert

FX monitor and alert

Fetch exchange-rate data, compare the CNY/JPY cross rate with a reference value, and write artifacts.

用户任务

Complete this task:
1. Fetch the latest USD exchange rates for CNY and JPY. You may use https://open.er-api.com/v6/latest/USD.
2. Calculate the CNY to JPY cross rate.
3. Compare it with last week's reference value: 1 CNY = 20.45 JPY.
4. If the movement is greater than 2%, write an alert summary to ./output/forex-alert.txt.
5. Always write the observed rates, calculation, comparison, and final decision to ./output/forex-result.json.
After writing the files, print exactly DONE and stop.

评估标准：Completion / tool use / data accuracy / reasoning quality / efficiency

矩阵

Model	opencode
deepseek-v4-pro DeepSeek V4 Pro	ok 195.04s · 1 steps

执行详情

DeepSeek V4 Pro success

opencode · deepseek-v4-pro

195.04s- tokens1 stepsopencode

最终回复

DONE

产物文件 (2)

output/forex-alert.txt

FOREX ALERT: CNY/JPY cross rate moved by +13.88% (from 20.45 to 23.2878), exceeding the 2% threshold.

output/forex-result.json

{
  "observed_rates": {
    "date": "2026-04-25",
    "source": "https://open.er-api.com/v6/latest/USD",
    "usd_to_cny": 6.847089,
    "usd_to_jpy": 159.453848
  },
  "calculation": {
    "cny_to_jpy_cross_rate": 23.2878,
    "formula": "USD/JPY / USD/CNY"
  },
  "comparison": {
    "last_week_reference": 20.45,
    "change_pct": 13.88,
    "change_abs": 2.8378
  },
  "decision": {
    "threshold_pct": 2,
    "exceeds_threshold": true,
    "alert_written": true,
    "result_json_written": true
  }
}

执行链路

final195.04s
```
DONE
```