Register an SSH public key | Athena

Register an SSH public key (the contents of an OpenSSH .pub file) on the caller’s account. Returns 400 for a malformed or unsupported key, 409 when the key is already registered or the caller has reached the per-account limit.

Authentication

X-API-KEYstring

API Key authentication via header

Request

This endpoint expects an object.

public_keystringRequired1-16384 characters

The contents of an OpenSSH .pub file: <type> <base64> [comment]. Accepted types: ssh-ed25519, ecdsa-sha2-nistp256/384/521, ssh-rsa (2048 bits or more), and the FIDO sk- variants.

labelstring or nullOptional<=64 characters

Optional display label; defaults to the key’s comment, then its type.

Response

Successful Response

created_atdatetime

When the key was registered.

fingerprintstring

SHA256:… fingerprint, as printed by ssh-keygen -lf.

idstring

Key id (ussk_…); use it to delete the key.

key_typestring

Key algorithm, e.g. ssh-ed25519.

labelstring

Display label (defaults to the key comment).

public_keystring

The key in <type> <base64> form (no comment).

last_used_atdatetime or nullOptional

When the key last authorized an SSH connection, if ever.

Errors

400

Bad Request Error

409

Conflict Error

422

Unprocessable Entity Error

$	curl -X POST https://api.athenaintel.com/api/v0/me/ssh-keys \
>	-H "X-API-KEY: <apiKey>" \
>	-H "Content-Type: application/json" \
>	-d '{
>	"public_key": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBZzuCu6wC9oVY2lVbVKdwpMElfCYiWTOIVQQBtq7HW9 me@laptop",
>	"label": "laptop"
>	}'

1	{
2	"created_at": "2026-09-02T10:00:00+00:00",
3	"fingerprint": "SHA256:yugfIHojRHoBSe/SbmI1QggP3U6YzmQLhoomGEcBYsM",
4	"id": "ussk_0c9b2f6e-8d5a-4c4b-9a5e-2f1d3c4b5a69",
5	"key_type": "ssh-ed25519",
6	"label": "laptop",
7	"public_key": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBZzuCu6wC9oVY2lVbVKdwpMElfCYiWTOIVQQBtq7HW9"
8	}