10 Free APIs You Can Use Without an API Key (Just Send a Request)

import requests

r = requests.get("https://api.open-meteo.com/v1/forecast",

    params={"latitude": 40.71, "longitude": -74.01, "current_weather": True})

print(f"NYC: {r.json()['current_weather']['temperature']}°C")

r = requests.get("https://earthquake.usgs.gov/fdsnws/event/1/query",

    params={"format": "geojson", "minmagnitude": 5, "limit": 3})

for eq in r.json()['features']:

    print(f"M{eq['properties']['mag']} — {eq['properties']['place']}")

r = requests.get("https://restcountries.com/v3.1/name/japan")

c = r.json()[0]

print(f"{c['name']['common']}: {c['population']:,} people")

r = requests.get("https://api.crossref.org/works",

    params={"query": "machine learning", "rows": 3})

for item in r.json()['message']['items']:

    print(item['title'][0][:60])

r = requests.get("https://api.openalex.org/works",

    params={"search": "CRISPR", "per_page": 3})

for w in r.json()['results']:

    print(f"{w['title'][:50]}... ({w['cited_by_count']} citations)")

r = requests.get("https://jsonplaceholder.typicode.com/posts/1")

print(r.json()['title'])

r = requests.get("https://dog.ceo/api/breeds/image/random")

print(r.json()['message'])  # URL to a random dog photo

r = requests.get("https://api.coingecko.com/api/v3/simple/price",

    params={"ids": "bitcoin,ethereum", "vs_currencies": "usd"})

for coin, data in r.json().items():

    print(f"{coin}: ${data['usd']:,}")

r = requests.get("http://export.arxiv.org/api/query",

    params={"search_query": "all:quantum computing", "max_results": 3})

print(r.text[:500])  # XML response with paper data

r = requests.get("https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi",

    params={"db": "pubmed", "term": "covid vaccine", "retmax": 3, "retmode": "json"})

print(f"Found: {r.json()['esearchresult']['count']} papers")