ByteTools API Directory
2,227 free APIs, 768 with curl examples that really ran
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About the startup
Most public-API lists copy their examples from a README that stopped working years ago. This one runs on one rule: on the 768 fully documented pages, the curl command and the JSON response are the real request and the real reply, and each page carries the date it was run. A verifier script re-hits all 768 endpoints in CI so the claim doesn't quietly rot. 2,227 APIs catalogued across 26 categories, 963 of which need no API key at all. No signup, no key of mine in the middle.
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Explore expertise in Development & IT
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Kevlin HenneyTechnology writer |
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Media about Development & IT
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Dmytro’s SubstackNewsletter · Dmytro Krasun |
TechnoBizzVaultNewsletter |
Tech World With Milan NewsletterNewsletter · Dr Milan Milanović |
Founder stories from Development & IT startups
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| Story |
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Tailwind UI's $2 million was five months of a commercial product, not a URL typoAdam Wathan's August 2020 essay says Tailwind CSS had about 10 million installs and that Tailwind UI, then about five months old, was about to cross $2 million in revenue, figures he stated himself beside a slug that mis |
ScreenshotOne took three years to $10k MRR and eight months to $20kDmytro Krasun says ScreenshotOne reached $10k monthly recurring revenue in September 2024, almost three years after launch, then $20k in June 2025, and that the second number changed how much more money still drove him. |
AJ said Carrd was about $1.2M ARR and he spends time on the product, not campaignsAJ told SaaS Club Carrd was about $100k MRR, about $1.2 million ARR, and that with two people he invests time in the builder rather than in finding ways to market it; he did not, in the sources fetched here, state $2M AR |
WP Engine passed $100M ARR after Cohen made thirty people say they would pay $49Jason Cohen says he did not start WP Engine until 30 people said they will pay $49 a month, 20 of them did, and in January 2018 he reported the company had passed $100 million ARR and closed $250 million from Silver Lake |
Browse Development & IT categories
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Code editors & coding assistants2,583 listed products |
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