Stock Market Open Times API

About the Stock Market Open Times API

Stock Market Open Times works by querying a large database of stock market open times to retrieve the open times for each day of the week. It returns the stock market open times in a structured format.

What people use it for

Order Execution Routing

Brokerage systems verify whether a destination market is currently open before queuing or routing limit orders for immediate execution.

Portfolio Dashboard Badges

Financial charting widgets display green or red market status indicators next to asset prices based on the exchange open flag.

Pre-Market Notification Triggers

To alert day traders about upcoming sessions, mobile push services check scheduled opening times and send reminders fifteen minutes prior.

Cross-Border Arbitrage Bots

Algorithmic trading scripts compare overlapping operational hours across international venues like the LSE and NYSE to coordinate hedged positions.

Ways to call it

One endpoint, many ways in — REST with JSON, XML, YAML and CSV, plus GraphQL and an MCP interface for AI agents.

JSON

Default REST response

XML

Markup format

YAML

Human-readable

CSV

Tabular export

Beta

GraphQL

Query language

New

MCP

For AI agents

Request parameters — GET /v1/stockmarketopentimes

Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them. Anything not listed here is dropped rather than passed through.

Required

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curl "https://api.apiverve.com/v1/stockmarketopentimes?exchange=nyse" \
  -H "x-api-key: YOUR_API_KEY"

Authentication

Send your key in the x-api-key header. That is the only auth step — no token exchange, and no per-endpoint scope to configure.

Response — GET /v1/stockmarketopentimes

Every APIVerve endpoint returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape.

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{
  "status": "ok",
  "error": null,
  "data": {
    "timezone": "America/New_York",
    "exchange": "NYSE",
    "fullName": "New York Stock Exchange",
    "isOpen": false,
    "openingTime": "2025-12-16 09:30:00",
    "closingTime": "2025-12-16 16:00:00"
  }
}

Response fields

Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.

Response headers

Every response carries your balance, so your own code always knows where it stands without polling anything. All four are exposed to browsers through CORS.

Errors

Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change.

What a call costs — 2 credits per call

Credits are shared across every APIVerve API — one balance, one key, one bill. Failed requests never count against it, so a rejected input costs nothing.

Calls are what the credits buy at this API's rate — spend them here, on any of the other APIs, or across both. Nothing is reserved per endpoint.

Zero-code embed — one snippet, no backend

Drop an interactive Stock Market Open Times form onto any page. The widget calls the API for you, so no key ever appears in your markup and there is nothing to deploy.

Changelog — Stock Market Open Times API

Every change to this endpoint, newest first. Breaking changes ship as a new version and the previous one keeps serving — response fields are added, never removed or retyped in place, so an integration written against v1 keeps working.

Currently v1