Best Free APIs for Developers in 2025

Best Free APIs for Developers In today's rapidly evolving developer landscape, APIs serve as the building blocks for creating innovative applications. Here's a curated list of the most valuable free APIs that continue to be reliable and powerful tools for developers in 2025.

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Running Python code on Microsoft Azure

Running Python code on Microsoft Azure can be done in several ways depending on your specific use case. Below are some common methods:

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Controlling an excavator through Python

Controlling an excavator through Python is a complex project that involves multiple components, including hardware interfacing, communication protocols, and safety considerations. Below is a high-level overview of how you might approach this project, along with a sample implementation for a simplified scenario.

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Python sample for interacting with the TD Ameritrade API

Here’s a basic Python sample for interacting with the TD Ameritrade API using the requests library. This example demonstrates how to:

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etrade api sample place buy order

Here is a complete Python script to place a buy order using the E*TRADE API.

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E*TRADE Developer Platform api sample program

ETRADE's Developer Platform API allows automated trading, account management, and market data retrieval. Below is a sample Python program to authenticate with ETRADE and place a trade (buy stock).

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Steps to Automate Pine Script Signals to IBKR

To send a Pine Script trading signal to Interactive Brokers (IBKR) API, you need a bridge between TradingView (Pine Script) and IBKR API. Since TradingView doesn’t support direct execution via brokers, you can use webhooks and a Python script to execute trades.

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TD Ameritrade API sample program

Here’s a basic sample program demonstrating how to use the TD Ameritrade API to fetch stock quotes. Before proceeding, make sure you have the following:

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execute the same trades across multiple Interactive Brokers (IBKR) accounts

execute the same trades across multiple Interactive Brokers (IBKR) accounts

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Integrating a TradingView chart into a Python GUI

Integrating a TradingView chart into a Python GUI application requires embedding the TradingView widget within a GUI framework like Tkinter, PyQt, or Kivy. Since TradingView provides embeddable charts through HTML and JavaScript, you can use a web view in the GUI to load the TradingView widget.

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How to trade with TradingView Alerts

Trading with TradingView Alerts requires integrating your TradingView account with a trading platform or broker via a webhook. This automation lets you execute trades based on predefined conditions set in your TradingView charts.

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IBKR TradingView Webhook Integration

To connect TradingView Webhooks with Interactive Brokers (IBKR), you can automate trades triggered by TradingView alerts and send those orders to IBKR using their API. Here’s how you can implement this:

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TradingView Webhook to Zerodha Order Placement

Here's a complete project outline for integrating TradingView webhooks with Zerodha's Kite API to place trades.

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How to check empty seats on a train using the IRCTC API (or any Indian Railway API)

To check empty seats on a train using the IRCTC API (or any Indian Railway API), follow these steps:

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Auto-generating a PDF without relying on external APIs

Auto-generating a PDF without relying on external APIs can be achieved using various libraries in popular programming languages. Below are examples in Python and JavaScript, two commonly used languages for such tasks.

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