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You need a root key with the permissions listed on this page. Create one in the dashboard under Settings > Root Keys, and pass it as Authorization: Bearer <root key>. See Permission reference for every permission.
Find out which key a key string belongs to. Use it when a user pastes a key and you need its ID, identity, or permissions without verifying it. Calls POST /v2/keys.whoami. See Looking up keys.

Usage

Flags

string
required
The full key string including its prefix.

Shared flags

Every unkey api command takes these. See CLI output and shared flags.
string
Root key used for the request. Falls back to UNKEY_ROOT_KEY, then to the key stored by unkey auth login.
string
default:"https://api.unkey.com"
Base URL of the API. Falls back to UNKEY_API_BASE_URL. You don’t normally need to set it.
string
default:"~/.unkey/config.toml"
Path of the config file written by unkey auth login. Falls back to UNKEY_CONFIG.
string
Output format. Falls back to UNKEY_OUTPUT. json prints the full response. Any other value prints the request ID and data.
string
Send this JSON as the whole request body instead of using the command’s flags. You can’t combine it with them.

Required permissions

api.*.read_key or api.<apiId>.read_key. Without the permission you get a 404, not a 403, so the response doesn’t reveal whether the key exists. See Root key permissions.

Examples

Identify a key
Or send the whole request as JSON:
Raw body
Last modified on September 29, 2026