Guide
The best economic data API for trading bots: how to choose
A bot that trades NFP, CPI or central bank decisions lives or dies on one thing: getting the official figure fast and in a format it can act on. Here is what to look for, and how the usual options compare.
5 criteria that matter
01 · Official source
The figure must come from the institution that publishes it (BLS, BEA, Fed, ECB, ONS…), not from a calendar site that copies it seconds or minutes later.
02 · Push, not polling
A WebSocket stream delivers the release as soon as it is read. Polling a REST endpoint every few seconds adds delay and burns rate limits.
03 · Machine-readable messages
Value, previous value, change, unit and the usual direction for the currency, in clean JSON, so the bot can decide without parsing text.
04 · Works with your platform
Python, Node.js and MetaTrader 5 (Expert Advisor) cover most retail and prop-firm bots.
05 · Legal redistribution
Public official data can be redistributed; scraped third-party calendars and licensed surveys usually cannot.
How the options compare
| Approach | Source | Delivery | Bot-ready | Cost |
|---|---|---|---|---|
| Scraping a calendar site (ForexFactory, Investing.com…) | Copy of the official figure | Polling, after the site updates | Fragile HTML parsing | Free, often against the terms |
| Financial terminals (Bloomberg, Refinitiv) | Official + licensed | Very fast | Yes, complex APIs | Thousands per month |
| Generic market-data APIs | Mixed, often delayed calendars | Mostly REST polling | Partly | Varies |
| ApiMacro | Official institutions only | WebSocket push, 6 regions | JSON event per release, Python / Node.js / MT5 | From €20/month |
Why ApiMacro
ApiMacro was built by a trader for exactly this job: it reads the release pages of the institutions around the scheduled time, checks the new figure, and pushes one event per release to every connected bot, from the server region closest to the source.