List gateway

Answers the terms to sign a USDC top-up against, for an agent or a person paying from a wallet: the treasury to pay, the networks and USDC contracts, the EIP-712 domain and types, the limits, and a nonce issued to the caller.

GET /v1/billing/crypto/gateway

Billing → · All API references → · Get started →

Address	`https://api.hanzo.ai/v1/billing/crypto/gateway`
Method	`GET`
Operation	`get_billing_crypto_gateway`
Auth	`Authorization: Bearer $HANZO_API_KEY`

Sign TransferWithAuthorization {from, to: payTo, value, validAfter, validBefore, nonce} under one network's domain, then POST it here with the salt. The nonce is the caller's own: a payment signed against it credits the caller and cannot be presented by anyone else.

A named handler, not a closure, so zipdoc can lift this prose into the registry.

Request

GET /v1/billing/crypto/gateway takes no parameters and no body — the credential is the whole request.

Response

Status	Body	Meaning
`200`	billing.GatewayTerms	ok
`default`	problem-details	refused

200 body — 23 fields.

Field	In	Type	Always
`accepts`	body	billing.GatewayAccept[]	—
`accepts[].asset`	body	string	—
`accepts[].decimals`	body	integer (int64)	—
`accepts[].domain`	body	billing.GatewayDomain	—
`accepts[].domain.chainId`	body	integer (int64)	—
`accepts[].domain.name`	body	string	—
`accepts[].domain.verifyingContract`	body	string	—
`accepts[].domain.version`	body	string	—
`accepts[].maxAmount`	body	string	—
`accepts[].minAmount`	body	string	—
`accepts[].minValiditySeconds`	body	integer (int64)	—
`accepts[].network`	body	string	—
`accepts[].symbol`	body	string	—
`maxCents`	body	integer (int64)	—
`maxValiditySeconds`	body	integer (int64)	—
`minCents`	body	integer (int64)	—
`nonce`	body	string	—
`payTo`	body	string	—
`primaryType`	body	string	—
`salt`	body	string	—
`scheme`	body	string	—
`types`	body	any	—
`x402Version`	body	integer (int64)	—

Failure carries the platform error shape — see Errors.

Examples

CLI

SDK

HTTP

MCP

hanzo billing crypto gateway list

.ts

.py

.go

.rs

.java

import { Configuration, BillingApi } from 'hanzoai';

const api = new BillingApi(new Configuration({ accessToken: process.env.HANZO_API_KEY }));
const { data } = await api.getBillingCryptoGateway();

from hanzoai.cloud import ApiClient, Configuration
from hanzoai.cloud.api import BillingApi

client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"]))
result = BillingApi(client).get_billing_crypto_gateway()

cfg := hanzoai.NewConfiguration()
cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY"))
client := hanzoai.NewAPIClient(cfg)

resp, _, err := client.BillingAPI.GetBillingCryptoGateway(context.Background()).Execute()
if err != nil {
	return err
}

use hanzo_client::apis::{configuration::Configuration, billing_api};

let mut cfg = Configuration::new();
cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok();

let result = billing_api::get_billing_crypto_gateway(&cfg, Default::default()).await?;

import ai.hanzo.cloud.ApiClient;
import ai.hanzo.cloud.api.BillingApi;

ApiClient client = new ApiClient();
client.setBearerToken(System.getenv("HANZO_API_KEY"));

var result = new BillingApi(client).getBillingCryptoGateway();

The method above is the one at the current release of the document. [email protected] (npm) and [email protected] (PyPI) were generated from an earlier release, where this operation carried a different id, so it spells the method differently — regenerating the clients is what makes the two agree. SDKs →

curl https://api.hanzo.ai/v1/billing/crypto/gateway \
  -H "Authorization: Bearer $HANZO_API_KEY"

Tool billing, op get_billing_crypto_gateway — POST the JSON-RPC envelope to https://api.hanzo.ai/v1/mcp.

curl -X POST https://api.hanzo.ai/v1/mcp \
  -H "Authorization: Bearer $HANZO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
       "jsonrpc": "2.0",
       "id": 1,
       "method": "tools/call",
       "params": {
         "name": "billing",
         "arguments": {
           "op": "get_billing_crypto_gateway",
           "input": {}
         }
       }
     }'

Billing API · All Hanzo APIs · Interactive reference

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