Extend Inbox

{
  "inspect_url": "/v1/invocations/ausca-discovery-example",
  "invocation": {
    "invocation_id": "ausca-discovery-example",
    "offer_revision_digest": "sha256:0ed231e8263c7861f74954a279a8699af9020ad2b7d40b5bb110d72d68561056",
    "output": {
      "extension": {
        "additional_duration_seconds": 86400,
        "address": "inbox+0123456789abcdef0123456789abcdef01234567.89abcdef01234567@mail.ausca.com",
        "expires_at": "2026-09-02T01:00:00.000Z",
        "extended_at": "2026-09-01T00:30:00.000Z",
        "inbox_id": "inb_0123456789abcdef0123456789abcdef01234567",
        "previous_expires_at": "2026-09-01T01:00:00.000Z",
        "schema": "ausca.agent_inbox.extension.v1",
        "state": "active"
      }
    },
    "output_digest": "sha256:66004d562e7ec85c0d5cf8504ed3d87e707671db55e74c2cd90ee1b59b3a72bd",
    "receipt_ref": {
      "public_url": "https://runx.ai/r/0000000000000000000000000000000000000000000000000000000000000000",
      "type": "receipt",
      "uri": "runx:receipt:discovery-example"
    },
    "state": "succeeded",
    "updated_at": "2026-01-01T00:00:00Z"
  },
  "status": "accepted"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://ausca.com/v1/extend-inbox' \
  -H 'content-type: application/json' \
  --data-raw '{"idempotency_key":"ausca-x402-discovery-example","input":{"additional_duration_seconds":86400,"expected_expires_at":"2026-09-01T01:00:00.000Z","extension_authorization":"aue_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA","inbox_id":"inb_0123456789abcdef0123456789abcdef01234567"},"input_schema_digest":"sha256:f19bd6463ce1c5123385231dd60984264a5a94587383e1351083817dcc1cba4f","offer_id":"inbox.extend","offer_revision":"extend-duration-r7","offer_revision_digest":"sha256:0ed231e8263c7861f74954a279a8699af9020ad2b7d40b5bb110d72d68561056","output_schema_digest":"sha256:4ac04a385731095a6fa7f1de251456ee3da396fe6a1876483b36eadd23fad09c"}'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - -X POST 'https://ausca.com/v1/extend-inbox' \
  -H 'content-type: application/json' \
  --data-raw '{"idempotency_key":"ausca-x402-discovery-example","input":{"additional_duration_seconds":86400,"expected_expires_at":"2026-09-01T01:00:00.000Z","extension_authorization":"aue_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA","inbox_id":"inb_0123456789abcdef0123456789abcdef01234567"},"input_schema_digest":"sha256:f19bd6463ce1c5123385231dd60984264a5a94587383e1351083817dcc1cba4f","offer_id":"inbox.extend","offer_revision":"extend-duration-r7","offer_revision_digest":"sha256:0ed231e8263c7861f74954a279a8699af9020ad2b7d40b5bb110d72d68561056","output_schema_digest":"sha256:4ac04a385731095a6fa7f1de251456ee3da396fe6a1876483b36eadd23fad09c"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.05 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.05" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.05 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fausca.com%2Fv1%2Fextend-inbox&method=POST
const res = await pay("https://ausca.com/v1/extend-inbox", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "idempotency_key": "ausca-x402-discovery-example",
    "input": {
      "additional_duration_seconds": 86400,
      "expected_expires_at": "2026-09-01T01:00:00.000Z",
      "extension_authorization": "aue_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
      "inbox_id": "inb_0123456789abcdef0123456789abcdef01234567"
    },
    "input_schema_digest": "sha256:f19bd6463ce1c5123385231dd60984264a5a94587383e1351083817dcc1cba4f",
    "offer_id": "inbox.extend",
    "offer_revision": "extend-duration-r7",
    "offer_revision_digest": "sha256:0ed231e8263c7861f74954a279a8699af9020ad2b7d40b5bb110d72d68561056",
    "output_schema_digest": "sha256:4ac04a385731095a6fa7f1de251456ee3da396fe6a1876483b36eadd23fad09c"
  }),
});
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.05 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.05"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://ausca.com/v1/extend-inbox",
        json={
            "idempotency_key": "ausca-x402-discovery-example",
            "input": {
                "additional_duration_seconds": 86400,
                "expected_expires_at": "2026-09-01T01:00:00.000Z",
                "extension_authorization": "aue_AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
                "inbox_id": "inb_0123456789abcdef0123456789abcdef01234567",
            },
            "input_schema_digest": "sha256:f19bd6463ce1c5123385231dd60984264a5a94587383e1351083817dcc1cba4f",
            "offer_id": "inbox.extend",
            "offer_revision": "extend-duration-r7",
            "offer_revision_digest": "sha256:0ed231e8263c7861f74954a279a8699af9020ad2b7d40b5bb110d72d68561056",
            "output_schema_digest": "sha256:4ac04a385731095a6fa7f1de251456ee3da396fe6a1876483b36eadd23fad09c",
        },
    )
    print(res.status_code, res.text)