Market Data API Guides — Python, WebSocket & AI | TickDB Blog
Choose a market data API, fetch quotes with Python and check historical data for backtests. Explore code examples, WebSocket reconnection guides and AI data workflows.
Adding market data to an application starts with a small, verifiable request. With an API key that has access to your chosen instrument, TickDB’s REST snapshot endpoint provides the symbol, latest trade price, and market timestamp needed for a basic quote display. This tutorial builds a Python function around that request, checks both HTTP and API errors, and preserves the timestamp so the application can distinguish a returned price from a newly updated one.
For Python developers building a forex quote monitor, this guide uses TickDB to subscribe to EURUSD and save each quote with its data timestamp and local receipt time. A bounded script writes raw messages, a quote CSV and a run summary. Quote counts, receipt gaps and changes in data timestamps help distinguish an open connection from continuing quote updates. The recorded 30-second observation received 38 EURUSD messages. The same code lets you inspect a new sample in your own environment.
How do you turn a stock API response into a usable quote display? Keep the key on the server, validate the response, match records by symbol, and show the price with its quote time. A live TickDB request for AAPL.US and MSFT.US returned both symbols successfully, but its top-level quote timestamps were older than its pre-market timestamps. The runnable Python example below makes that distinction visible and handles missing or malformed records.
XAUUSD quotes gold in US dollars per troy ounce. It is useful for following gold prices, building dashboards, and setting price alerts, but the symbol alone does not identify an executable price or tell you whether to buy or sell. For example, a synthetic bid of 2,400.00 and ask of 2,400.80 produce a midpoint of 2,400.40, but neither that calculation nor a threshold alert guarantees an execution price.
After integrating real-time market data into a forex dashboard, exchange-rate monitor, or price alert, when should the page resume showing that it is “updating normally” once the connection is restored? This article is aimed at developers responsible for these features. Using TickDB’s actual EUR/USD subscription as an example, it walks through the full process of connecting, subscribing, deliberately disconnecting, and reconnecting, and explains how quote timestamps, heartbeats, and page status work together to keep teams from being misled by stale data. Product managers and technical colleagues can use the recovery sequence and acceptance checklist in the article to jointly review the page behavior.
For quant teams choosing an FX data supplier, a working live feed answers only part of the purchasing question. Research may need historical bid and ask updates, while a dashboard may need current quotes and charts. This guide explains how to distinguish quotes, trades, and bars, check historical access, and compare costs against a specific job. It includes a dated EUR/USD quote sample, three actual TickDB historical queries, and a supplier questionnaire you can copy into an enquiry.
A live forex display needs a client that authenticates, subscribes to the right quote channel, and restores that subscription after a disconnect. A server-side Node.js collector can do this while keeping credentials out of the browser and tracking connection health separately from quote freshness. The implementation below uses documented EUR/USD bid/ask fields, validates incoming messages, and checks an application-level heartbeat; reconnecting resumes collection but does not recover missing ticks.
A stock API gives AI access to real-time U.S. stock market data and historical price bars. Combining those records with gold prices and forex quotes makes cross-market analysis possible. This walkthrough uses actual TickDB MCP requests to examine the October 22, 2026 technology stock selloff, calculate comparable returns, and separate price observations from explanations.
For developers building an FX dashboard or price alert, a reopened connection is only part of recovery. The application also needs a valid quote for the right currency pair, a usable data timestamp, and a visible record of the interruption. This tutorial uses a real TickDB EURUSD stream to show the first subscription, a controlled disconnect, resubscription, and quote checks. The download includes the bounded Node.js runner, original messages, event logs, and an offline checker.
When integrating stock, foreign exchange, futures, index, or cryptocurrency quotes, how do you determine whether a real-time market data API is suitable for your project? First, turn your asset classes, fields, and business use cases into a requirements matrix. Then validate REST queries and WebSocket streams separately, and finally decide whether to purchase based on sampling, reconnection tests, and license verification. Receiving quotes does not mean that tick-by-tick data, a complete order book, or backfillable history is available. The difference between receipt time and source time is meaningful only after the time definitions are clear and clocks are synchronized.
After viewing Hong Kong stock quotes on AASTOCKS, if you want to assess the depth of the bid and ask sides, observe the pace of trading, or review price changes, you need to integrate order book depth and tick-by-tick records into a program. TickDB's Hong Kong stock order book supports up to ten levels on each side, while tick-by-tick queries return trade prices, quantities, directions, and timestamps and allow you to subscribe to real-time trades. This article uses depth imbalance and the volume-weighted average price of a trade sample to illustrate how these data can be used while distinguishing between the most recent trade window and historical data that can be queried by date.
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