Phone verification API

Verify the number.
Trust the identity.

Two API calls. Any phone number, anywhere. Prepaid credits, no contracts, no minimums.

Start verifying → Read the docs

How it works

Send the code

POST a phone number with your API key. Sigil generates a 6-digit OTP and delivers it via SMS in seconds.

Verify the code

POST the code back. Get verified: true. The number is confirmed. One credit used.

Rejection built in

Every SMS includes a rejection link. If the number isn't theirs, the owner can cancel with one tap.

Pricing

Prepaid credits
Buy credits upfront. Each verified number costs 1 credit. No monthly fees, no contracts.
€0.09 / credit
Minimum top-up: €10 (111 credits)
Get started →