Catalogue
API guides
Other people’s HTTP APIs, with pricing labels, limits, and copy-paste snippets. We document how to call them. We do not host or proxy them.
PureDevKit does not host or proxy these APIs. Pricing, rate limits, CORS, authentication, and JSON shapes can change without notice. Always confirm the current rules on the provider’s official documentation before you ship.
India
IFSC to bank details API (India)
Look up Indian bank branch details from an 11-character IFSC using Razorpay’s free IFSC API. No key. Confirm limits on their site.
1 provider · 4 min
Indian PIN Code API — Free Post Office Lookup
Free Indian PIN code API options: unofficial postalpincode.in for quick lookups vs official data.gov.in datasets. Step-by-step examples for post office, district, and state.
2 providers · 6 min
data.gov.in API key — register, query datasets & examples
How to get a free data.gov.in API key, find a dataset resource ID, and run your first JSON request. India open data portal — server-side only.
1 provider · 7 min
IP, DNS, and HTTP
IP address to location API
City, region, country, ASN, and ISP from an IP. Compare ip-api (free, HTTP, non-commercial), IPinfo, and ipapi.co.
3 providers · 6 min
What is my public IP API
Return the caller’s public IPv4 or IPv6. ipify (JSON) and Cloudflare trace. Both free, no key.
2 providers · 3 min
DNS lookup API (DNS-over-HTTPS)
Resolve A, AAAA, MX, TXT and more with Cloudflare DNS-over-HTTPS. Free, HTTPS, JSON. No zone-file builder.
1 provider · 4 min
HTTP testing APIs (status, echo, delay)
Hit a hosted echo server to practice status codes, headers, and delays. httpbingo is the usual stand-in for httpbin.
1 provider · 4 min
Mock HTTP
Geo, weather, and places
Free weather forecast API
Open-Meteo JSON forecasts with no API key for non-commercial use. Attribution required. Paid plans for commercial volume.
1 provider · 4 min
Free Geocoding API Comparison (2026) — Nominatim, Google, Mapbox
Compare free and freemium geocoding APIs in 2026: Nominatim (OpenStreetMap), Google Geocoding, and Mapbox. Rate limits, CORS, commercial use, and copy-paste examples.
3 providers · 7 min
REST Countries API
Country names, ISO codes, currencies, calling codes, and flags. Free, no key. Cache it — this is reference data.
1 provider · 3 min
Public holidays API
Nager.Date returns public holidays by country and year. Free, no key. Verify the country’s list before payroll use.
1 provider · 3 min
Rates and prices
Free foreign exchange rates API
Daily FX from Frankfurter (central-bank sources). No API key. Not a trading feed. Pair with the money formatter for display.
1 provider · 4 min
Cryptocurrency price API
Spot prices from CoinGecko. Freemium: a demo/pro key raises limits. Not financial advice.
1 provider · 4 min