25 Best Free APIs for Developers in 2026

# Base URL for all APIs:
# https://agent-gateway-kappa.vercel.app/v1/{service-name}/{endpoint}

# Example 1: Get crypto prices
curl "https://agent-gateway-kappa.vercel.app/v1/crypto-feeds/api/prices?ids=bitcoin,ethereum"

# Example 2: Scrape a webpage
curl "https://agent-gateway-kappa.vercel.app/v1/agent-scraper/api/scrape?url=https://example.com"

# Example 3: Generate a PDF from Markdown
curl -X POST "https://agent-gateway-kappa.vercel.app/v1/agent-pdfgen/api/generate" \
  -H "Content-Type: application/json" \
  -d '{"markdown":"# Invoice\n\n| Item | Price |\n|------|-------|\n| Widget | $9.99 |"}' \
  -o invoice.pdf

# Example 4: Search the web
curl "https://agent-gateway-kappa.vercel.app/v1/agent-search/api/search?q=best+javascript+frameworks+2026"

import requests

BASE = "https://agent-gateway-kappa.vercel.app/v1"

def api(service, endpoint, method="GET", **kwargs):
    """Call any of the 25 APIs with one function."""
    url = f"{BASE}/{service}/{endpoint}"
    r = requests.request(method, url, **kwargs)
    return r.json() if "json" in r.headers.get("content-type", "") else r.content

# Web scraping
page = api("agent-scraper", "api/scrape", params={"url": "https://example.com"})
print(page["content"][:200])

# Crypto prices
data = api("crypto-feeds", "api/prices", params={"ids": "bitcoin,ethereum"})
for symbol, coin in data["prices"].items():
    print(f"{symbol}: ${coin['price']:,.2f}")

# IP geolocation
geo = api("agent-geo", "geo/8.8.8.8")
print(f"Google DNS is in {geo['city']}, {geo['country']}")

# Screenshot (returns binary)
img = api("agent-screenshot", "api/screenshot", params={"url": "https://github.com"})
with open("github.png", "wb") as f:
    f.write(img)

const BASE = "https://agent-gateway-kappa.vercel.app/v1";

async function api(service, endpoint, options = {}) {
  const url = `${BASE}/${service}/${endpoint}`;
  const res = await fetch(url, options);
  const ct = res.headers.get("content-type") || "";
  return ct.includes("json") ? res.json() : res.arrayBuffer();
}

// Web search
const results = await api("agent-search", "api/search?q=best+node+frameworks");
console.log(results.results.map(r => `${r.title}: ${r.url}`).join("\n"));

// DNS lookup
const dns = await api("agent-dns", "api/resolve/github.com");
console.log("GitHub IPs:", dns.ipv4);

// Shorten URL
const short = await api("agent-shorturl", "api/shorten", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ url: "https://github.com" }),
});
console.log("Short URL:", short.shortUrl);