KontragentPro API vs Pick an Agency API

Two free Business APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

Choose KontragentPro API if its data fits your use case better; on access and reliability it's level with Pick an Agency API.
Choose Pick an Agency API if its data fits your use case better; on access and reliability it's level with KontragentPro API.

	KontragentPro API	Pick an Agency API
What it does	Russian company data from state registers by INN or OGRN: profile, finances, timeline.	Search 47,000+ marketing agencies by service, location and rating.
Provider	KontragentPro API v2	pickanagency.com
API key	Not needed	Not needed
HTTPS	Yes	Yes
CORS (browser calls)	Yes	Yes
Status today	Online · 719 ms	Last check failed
Uptime (30 days)	Up	Down
Developer rating	Not rated yet	Not rated yet
Price	Free / free tier	Free / free tier

Russian company data from state registers by INN or OGRN: profile, finances, timeline.

Strengths

Search 47,000+ marketing agencies by service, location and rating.

Strengths

Prototyping or a tutorial? Pick the one that needs no API key (both qualify).
Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
Still unsure? Both are free to try: send one request to each and compare the data you get back.

Neither needs an API key; you can call both straight away.