Ready-made CSVs are comfy, but the real skill is pulling fresh, still-messy data yourself — just like on the job. Start with the ones that need no key, and don't chase the 'correct' API — grab the one whose topic you actually care about.
GitHub list · thousands of APIs A giant catalog of free APIs by category — weather, finance, sport, games, animals — each tagged with auth and rate limits. Your first stop for 'is there even an API for X?'. There's also a hand-picked set of 10 APIs aimed at data engineering, with a ready pipeline example.
Tip: Open the catalog, jump to a category that grabs you, and pick the first no-key API. Interest beats 'correctness' — start with what excites you.
Everything Pokémon: stats, types, evolutions, and the links between them. The perfect first-ever API — no signup, clean structure, plenty to cut your teeth on with JSON and requests.
Tip: Try it right now: curl https://pokeapi.co/api/v2/pokemon/pikachu
Questions
- Which Pokémon type is strongest on average by stats?
- Who has the longest evolution chain — and how do they branch?
A reference on every country: population, area, currencies, languages, borders. Pairs beautifully with other data — enrich your dataset by country and build maps.
Questions
- Which regions pack the most official languages per country?
- Is there a link between a country's area and how many neighbours it has?
key optional · generous limits Repo activity: commits, stars, issues, releases. Dig into open-source popularity and tech trends on the repos you actually love.
Questions
- How did your favourite project grow in stars week by week?
- Which days and hours see the most merged PRs?
Tracks, artists, playlists, and audio features — danceability, energy, tempo, mood. Pull your own playlists and take your own taste apart piece by piece.
Questions
- How does your favourite genre differ in audio features from the rest?
- Does the mood of your playlists shift by time of day?
Current weather and forecasts worldwide. A classic when you want to cross weather with something else — flight delays, sales, how active people are.
Questions
- Does weather move something you already collected — sales, trips, activity?
A database of news events from all over the world, with sentiment scoring and live translation. The scale is enormous — for ambitious projects on global trends and tone.
Questions
- How did the emotional tone of news on a topic you care about shift over a year?