curl --request POST \
--url https://kms.{region}.basaltic.sh/v1/keys \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"name": "prod-master",
"key_spec": "aes-256",
"description": "Master KEK for the production data plane",
"tags": {
"environment": "production",
"team": "backend"
},
"key_usage": "encrypt_decrypt"
}
'import requests
url = "https://kms.{region}.basaltic.sh/v1/keys"
payload = {
"name": "prod-master",
"key_spec": "aes-256",
"description": "Master KEK for the production data plane",
"tags": {
"environment": "production",
"team": "backend"
},
"key_usage": "encrypt_decrypt"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
name: 'prod-master',
key_spec: 'aes-256',
description: 'Master KEK for the production data plane',
tags: {environment: 'production', team: 'backend'},
key_usage: 'encrypt_decrypt'
})
};
fetch('https://kms.{region}.basaltic.sh/v1/keys', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://kms.{region}.basaltic.sh/v1/keys",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'name' => 'prod-master',
'key_spec' => 'aes-256',
'description' => 'Master KEK for the production data plane',
'tags' => [
'environment' => 'production',
'team' => 'backend'
],
'key_usage' => 'encrypt_decrypt'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://kms.{region}.basaltic.sh/v1/keys"
payload := strings.NewReader("{\n \"name\": \"prod-master\",\n \"key_spec\": \"aes-256\",\n \"description\": \"Master KEK for the production data plane\",\n \"tags\": {\n \"environment\": \"production\",\n \"team\": \"backend\"\n },\n \"key_usage\": \"encrypt_decrypt\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://kms.{region}.basaltic.sh/v1/keys")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"name\": \"prod-master\",\n \"key_spec\": \"aes-256\",\n \"description\": \"Master KEK for the production data plane\",\n \"tags\": {\n \"environment\": \"production\",\n \"team\": \"backend\"\n },\n \"key_usage\": \"encrypt_decrypt\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://kms.{region}.basaltic.sh/v1/keys")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"name\": \"prod-master\",\n \"key_spec\": \"aes-256\",\n \"description\": \"Master KEK for the production data plane\",\n \"tags\": {\n \"environment\": \"production\",\n \"team\": \"backend\"\n },\n \"key_usage\": \"encrypt_decrypt\"\n}"
response = http.request(request)
puts response.read_body{
"key": {
"id": "3f8a1c2e-9b47-4d6a-bc11-0e2f5a7d9c41",
"crn": "crn:kms:sa-saopaulo-1:my-account:key/prod-master",
"name": "prod-master",
"tags": {
"environment": "production",
"team": "backend"
},
"key_spec": "aes-256",
"key_usage": "encrypt_decrypt",
"state": "enabled",
"created_at": "2026-01-15T09:30:00Z",
"updated_at": "2026-01-15T09:30:00Z",
"description": "Master KEK for the production data plane",
"system": true,
"deleted_at": "2023-11-07T05:31:56Z",
"recovery_window_days": 18,
"scheduled_purge_at": "2026-01-22T09:30:00Z"
}
}{
"error": {
"code": "INVALID_INPUT",
"message": "Invalid request parameters",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "UNAUTHORIZED",
"message": "Authentication required",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "ACCESS_DENIED",
"message": "You don't have permission to perform this action",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "INVALID_INPUT",
"message": "Invalid request parameters",
"request_id": "550e8400-e29b-41d4-a716-446655440000",
"params": {
"instances": 2,
"pools": 0
}
}
}{
"error": {
"code": "IDEMPOTENCY_KEY_REUSED",
"message": "This Idempotency-Key was already used with a different request payload",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "INTERNAL_ERROR",
"message": "An internal error occurred",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}Create a KMS key
Provision a fresh key under the requested spec and usage. Synchronous: the response carries the key in state=enabled, ready for crypto operations.
curl --request POST \
--url https://kms.{region}.basaltic.sh/v1/keys \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '
{
"name": "prod-master",
"key_spec": "aes-256",
"description": "Master KEK for the production data plane",
"tags": {
"environment": "production",
"team": "backend"
},
"key_usage": "encrypt_decrypt"
}
'import requests
url = "https://kms.{region}.basaltic.sh/v1/keys"
payload = {
"name": "prod-master",
"key_spec": "aes-256",
"description": "Master KEK for the production data plane",
"tags": {
"environment": "production",
"team": "backend"
},
"key_usage": "encrypt_decrypt"
}
headers = {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
body: JSON.stringify({
name: 'prod-master',
key_spec: 'aes-256',
description: 'Master KEK for the production data plane',
tags: {environment: 'production', team: 'backend'},
key_usage: 'encrypt_decrypt'
})
};
fetch('https://kms.{region}.basaltic.sh/v1/keys', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://kms.{region}.basaltic.sh/v1/keys",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode([
'name' => 'prod-master',
'key_spec' => 'aes-256',
'description' => 'Master KEK for the production data plane',
'tags' => [
'environment' => 'production',
'team' => 'backend'
],
'key_usage' => 'encrypt_decrypt'
]),
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>",
"Content-Type: application/json"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://kms.{region}.basaltic.sh/v1/keys"
payload := strings.NewReader("{\n \"name\": \"prod-master\",\n \"key_spec\": \"aes-256\",\n \"description\": \"Master KEK for the production data plane\",\n \"tags\": {\n \"environment\": \"production\",\n \"team\": \"backend\"\n },\n \"key_usage\": \"encrypt_decrypt\"\n}")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("Authorization", "Bearer <token>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://kms.{region}.basaltic.sh/v1/keys")
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.body("{\n \"name\": \"prod-master\",\n \"key_spec\": \"aes-256\",\n \"description\": \"Master KEK for the production data plane\",\n \"tags\": {\n \"environment\": \"production\",\n \"team\": \"backend\"\n },\n \"key_usage\": \"encrypt_decrypt\"\n}")
.asString();require 'uri'
require 'net/http'
url = URI("https://kms.{region}.basaltic.sh/v1/keys")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n \"name\": \"prod-master\",\n \"key_spec\": \"aes-256\",\n \"description\": \"Master KEK for the production data plane\",\n \"tags\": {\n \"environment\": \"production\",\n \"team\": \"backend\"\n },\n \"key_usage\": \"encrypt_decrypt\"\n}"
response = http.request(request)
puts response.read_body{
"key": {
"id": "3f8a1c2e-9b47-4d6a-bc11-0e2f5a7d9c41",
"crn": "crn:kms:sa-saopaulo-1:my-account:key/prod-master",
"name": "prod-master",
"tags": {
"environment": "production",
"team": "backend"
},
"key_spec": "aes-256",
"key_usage": "encrypt_decrypt",
"state": "enabled",
"created_at": "2026-01-15T09:30:00Z",
"updated_at": "2026-01-15T09:30:00Z",
"description": "Master KEK for the production data plane",
"system": true,
"deleted_at": "2023-11-07T05:31:56Z",
"recovery_window_days": 18,
"scheduled_purge_at": "2026-01-22T09:30:00Z"
}
}{
"error": {
"code": "INVALID_INPUT",
"message": "Invalid request parameters",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "UNAUTHORIZED",
"message": "Authentication required",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "ACCESS_DENIED",
"message": "You don't have permission to perform this action",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "INVALID_INPUT",
"message": "Invalid request parameters",
"request_id": "550e8400-e29b-41d4-a716-446655440000",
"params": {
"instances": 2,
"pools": 0
}
}
}{
"error": {
"code": "IDEMPOTENCY_KEY_REUSED",
"message": "This Idempotency-Key was already used with a different request payload",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}{
"error": {
"code": "INTERNAL_ERROR",
"message": "An internal error occurred",
"request_id": "550e8400-e29b-41d4-a716-446655440000"
}
}kms:CreateKey. See KMS permissions for the full list, what each one covers, and an example policy.Authorizations
An OAuth 2.0 bearer token, sent as Authorization: Bearer <token>.
This is the recommended way to authenticate.
Get one by exchanging a service account's access key pair at
POST /v1/oauth/token with grant_type=client_credentials. It is the
standard client-credentials grant, so any OAuth-aware library will
obtain and refresh it for you.
curl -s -u "$KEY_ID:$SECRET" -d grant_type=client_credentials \ https://iam.basaltic.sh/v1/oauth/token
Tokens last an hour by default. The same access key pair is separately your AWS SigV4 credential for the S3-compatible object endpoint, which speaks nothing else.
Headers
Optional client-generated key that makes a create replay-safe. Retrying a request with the same key returns the original outcome verbatim instead of creating a duplicate resource. Reusing a key with a different request body is rejected (422); a request whose key is still being processed returns 409. Records are honored for 24 hours. Use a UUID or similarly unique token.
255Body
Unique per account. Surfaces in the CRN (crn:kms:::key/) — letters, digits, dot, dash, underscore. Resource names must not start with the literal crn: prefix or be UUIDs (canonical, compact, braced, or urn:uuid: forms, in either case).
^[a-zA-Z0-9][a-zA-Z0-9._-]{0,127}$"prod-master"
Cryptographic spec. Determines which mechanisms apply:
- aes-256: symmetric AEAD (AES-GCM)
- rsa-2048: asymmetric; OAEP-SHA256 encrypt + PSS-SHA256 sign
- rsa-4096: same as rsa-2048
- ecdsa-p256: asymmetric; SHA-256 sign/verify (no encrypt)
aes-256, rsa-2048, rsa-4096, ecdsa-p256 "aes-256"
"Master KEK for the production data plane"
Show child attributes
Show child attributes
{ "environment": "production", "team": "backend" }
Required for RSA specs (both encrypt_decrypt and sign_verify are valid). Defaults to encrypt_decrypt for AES, sign_verify for ECDSA.
encrypt_decrypt, sign_verify "encrypt_decrypt"
Response
Key created
Show child attributes
Show child attributes

