Create keys
Rolls one wallet's signing material through its own custody backend and answers the wallet with whatever address that produced.
POST /v1/wallet/{id}/keys
| Address | https://api.hanzo.ai/v1/wallet/{id}/keys |
| Method | POST |
| Operation | post_wallet_by_id_keys |
| Auth | Authorization: Bearer $HANZO_API_KEY |
Rolls one wallet's signing material through its own custody backend and answers the wallet with whatever address that produced. For KMS custody a fresh secp256k1 key is generated and sealed, which CHANGES the address — funds and approvals at the old address do not move. For a Safe the address is counterfactual and the owner shares are ring-managed, so rotation is a no-op and the address is unchanged. A backend that is not configured fails closed with 503 rather than leaving the wallet half-rotated.
Request
1 field.
| Field | In | Type | Required | Description |
|---|---|---|---|---|
id | path | string | yes |
Response
| Status | Body | Meaning |
|---|---|---|
200 | wallet.Wallet | ok |
default | problem-details | refused |
200 body — 12 fields.
| Field | In | Type | Always | Description |
|---|---|---|---|---|
accountId | body | string | — | |
address | body | string | — | Address is the on-chain address. |
agent | body | string | — | |
chain | body | string | — | Chain is the EVM chain the wallet is bound to, CAIP-2 "eip155:<n>" or a bare decimal chain id. |
createdAt | body | integer (int64) | — | CreatedAt is when the wallet was provisioned, Unix seconds. |
custody | body | string | — | Custody is the backend holding the signing material, fixed at creation: "kms" (a secp256k1 key sealed under KMS and opened in-process), "mpc" or "treasury" (an m-of-n threshold key on the deployed ring, which differ by governance and not by signing mechanics), or "safe" (a Safe contract owned by an MPC key). |
financeAccount | body | string | — | FinanceAccount is the finance ledger account bound to this wallet — the lookup that turns a ledger account back into an on-chain signer. |
id | body | string | — | ID is the wallet id, minted by the server as "wal_" + 24 hex. |
name | body | string | — | Name is the display label given at creation. |
org | body | string | — | |
project | body | string | — | |
tier | body | string | — | Tier is the wallet tier the ring keys its TierPolicy on: hot, warm, cold, gas, bridge, contract_admin, validator, quarantine or disaster_recovery. |
Failure carries the platform error shape — see Errors.
Examples
hanzo wallet keys <id>import { Configuration, WalletApi } from 'hanzoai';
const api = new WalletApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.postWalletByIdKeys({ id: 'id' });from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import WalletApi
client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = WalletApi(client).post_wallet_by_id_keys(id='id')cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)
resp, _, err := client.WalletAPI.PostWalletByIdKeys(context.Background()).Execute()
if err != nil {
return err
}use hanzo_client::apis::{configuration::Configuration, wallet_api};
let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();
let result = wallet_api::post_wallet_by_id_keys(&cfg, Default::default()).await?;import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.WalletApi;
ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));
var result = new WalletApi(client).postWalletByIdKeys();curl -X POST https://api.hanzo.ai/v1/wallet/<id>/keys \
-H "Authorization: Bearer $HANZO_API_KEY"MCP reaches wallet through the wallet tool, which names its 7 operations with its own verbs — this one among them, under a name only MCP declares. describe explains any of them:
curl -X POST https://api.hanzo.ai/v1/mcp \
-H "Content-Type: application/json" \
-d '{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/call",
"params": {
"name": "describe",
"arguments": {
"op": "list_wallets"
}
}
}'