Contact
There is no form on this site — a form needs a server that receives it, and this site has none, on purpose. There is an address, and it is read.
Where to write
Security
api@castomo.com with security in the subject, or read security.txt.
Post
Castomo prosta spółka akcyjna
ul. Powstańców Śląskich 5/212, 53-332 Wrocław, Polska
Before you write
- The getting-started page answers the key, the wallet, the envelope and the errors.
- Every endpoint has a page with a mock tester; the live docs run the real call with your key.
- The status page says what every service answered at the last build.
- Your wallet, keys and connections are in the dashboard.