# agent402.tools Market Open Brief

> agent402.tools Market Open Brief is a paid API for AI agents from agent402.tools, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-15).

Returns a bundled pre-market snapshot for a single ticker: live quote, pre-market quote, options surface, dividend posture, and today's market-wide earnings calendar — all in one paid call.

## Facts

- Endpoint: POST https://agent402.tools/api/skill/market-open
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent402-tools-market-open-brief-922c6c97
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CNEx9W90dFk7oQCgBtNg5

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-market-open-brief-922c6c97 -d '<json body>'
```

Example prompt: Pull the full market-open brief for NVDA — I need the live quote, pre-market price, options surface, dividend status, and today's earnings calendar all at once before the bell opens.

## When to prefer this

Choose this endpoint when you need a comprehensive pre-market briefing for a single ticker and want to avoid making 4-5 separate API calls for quote, pre-market, options, dividends, and earnings data. Ideal for morning trading workflows, pre-bell agent pipelines, or any scenario where latency and call count matter and you want one atomic, paid snapshot.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error
- Market data unavailable outside trading hours or for illiquid symbols
- Payment failure via x402 protocol results in 402 response with no data
- Options surface unavailable for tickers without listed options (e.g. OTC stocks)
- Earnings calendar may be empty on days with no scheduled releases

## How this service works

Bundled execution of the Market open brief workflow - Full pre-trade snapshot for one ticker before the bell: the live quote, the pre-market quote, the options surface, dividend posture, and today's market-wide earnings calendar - one payment. One x402 payment runs 5 underlying tools (stock-quote, premarket-quote, options-chain, stock-dividends, earnings-calendar); partial-success per step.

## Output

A bundled response containing: the current live quote for the ticker, the pre-market quote, a snapshot of the options surface (strikes, expirations, implied volatility), the dividend posture (yield, ex-date, payout), and today's market-wide earnings calendar — all returned in a single structured payload.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "ticker": {
   "type": "string",
   "description": "Stock ticker (e.g. AAPL, NVDA, SPY)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "args": {
   "ticker": "AAPL"
  },
  "pack": "market-open",
  "steps": [
   {
    "ok": true,
    "slug": "stock-quote",
    "result": {}
   },
   {
    "ok": true,
    "slug": "premarket-quote",
    "result": {}
   },
   {
    "ok": true,
    "slug": "options-chain",
    "result": {}
   },
   {
    "ok": true,
    "slug": "stock-dividends",
    "result": {}
   },
   {
    "ok": true,
    "slug": "earnings-calendar",
    "result": {}
   }
  ],
  "summary": "5/5 steps succeeded"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent402-tools-market-open-brief-922c6c97/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)