# agent402.tools Cross-Asset Price Monitor

> agent402.tools Cross-Asset Price Monitor is a paid API for AI agents from agent402.tools, paid per call via x402, $0.021/call, status unknown (last checked 2026-09-14).

Fetches live quotes and 1-year historical data for a stock ticker and a crypto asset side-by-side in a single bundled API call via x402 micropayment

## Facts

- Endpoint: POST https://agent402.tools/api/skill/price-monitor
- Price: $0.021/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-tools-cross-asset-price-monitor-4a6432cc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CrzeyUnEqPxaRg1xJ4Fk8

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 agent402-tools-cross-asset-price-monitor-4a6432cc -d '<json body>'
```

Example prompt: Can you pull a side-by-side price snapshot for AAPL stock and bitcoin — I want their live quotes plus the full 1-year price history for both so I can compare how they've moved?

## When to prefer this

Choose this endpoint when you need both stock and crypto data together in a single atomic call, avoiding the overhead of orchestrating multiple separate API calls and payments. Ideal for cross-asset dashboards, portfolio comparisons, or any workflow that needs equities and cryptocurrency data in one bundled response with a single $0.05 USDC x402 payment.

## Known failure modes

- Invalid or unknown stock ticker returns an error for the equity leg
- CoinGecko coin ID not recognized causes failure on the crypto leg
- Market closed hours may affect live stock quote freshness
- Network timeout from any of the 5 underlying tool calls could cause partial or full failure
- Insufficient USDC balance or x402 payment failure blocks the entire request
- Rate limiting on upstream data providers may delay or reject the call

## How this service works

Bundled execution of the Cross-asset price monitor workflow - Side-by-side snapshot of a stock and a crypto asset: live quotes, 1-year history, and a date-stamped comparison. One x402 payment runs 5 underlying tools (stock-quote, stock-history, crypto-price, crypto-history, date-format); partial-success per step.

## Output

Returns live price quotes for the specified stock ticker and crypto coin, along with 1-year historical price data for both assets, formatted as a date-stamped cross-asset comparison snapshot. All five underlying data tools (stock-quote, stock-history, crypto-quote, crypto-history, and comparison formatter) are executed and their results bundled in a single response.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "coin": {
   "type": "string",
   "description": "Crypto coin ID from CoinGecko (e.g. bitcoin, ethereum, solana)"
  },
  "ticker": {
   "type": "string",
   "description": "Stock ticker symbol (e.g. AAPL, MSFT, TSLA)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "args": {
   "coin": "bitcoin",
   "ticker": "AAPL"
  },
  "pack": "price-monitor",
  "steps": [
   {
    "ok": true,
    "slug": "stock-quote",
    "result": {}
   },
   {
    "ok": true,
    "slug": "stock-history",
    "result": {}
   },
   {
    "ok": true,
    "slug": "crypto-price",
    "result": {}
   },
   {
    "ok": true,
    "slug": "crypto-history",
    "result": {}
   },
   {
    "ok": true,
    "slug": "date-format",
    "result": {}
   }
  ],
  "summary": "5/5 steps succeeded"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-tools-cross-asset-price-monitor-4a6432cc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent402.tools](https://www.zero.xyz/host/agent402.tools/llms.txt)