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POST
Check number availability

Authorizations

Authorization
string
header
required

An API key from Settings → API keys, sent as Authorization: Bearer kb_live_…. A workspace key starts kb_; a personal key starts kbp_ and acts as its owner.

Headers

Kallabot-Version
enum<string>

The API version to answer as, a date (YYYY-MM-DD). Leave it out for the current version (2026-11-07). An unknown version is refused with 400 unsupported_api_version.

Available options:
2026-11-07
Example:

"2026-11-07"

Body

application/json
numbers
Candidate · object[]
required

Up to 10 numbers to check.

Required array length: 1 - 10 elements

Response

Successful Response

data
Data · object
required

Each number asked about → whether it is still on sale.