A

Ausca Agent Inbox · Open Inbox

by Ausca Agent Inbox

POSTBase

$0.05

per call · USDC on Base

Start one renewable random receive-only email address with 1 hour, 24 hours, or 7 days prepaid, then wait for and read bounded inbound mail. Extend the same active address when more time is needed. No outbound email or mailbox suite.

Endpoint

POST https://ausca.com/v1/open-inbox

7

Calls / 30d

1

Unique payers / 30d

Sep 7

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://ausca.com/v1/open-inbox", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "canonicalizer_version": "runx.receipt.c14n.v1",
    "idempotency_key": "ausca-x402-discovery-example",
    "input": {
      "duration_seconds": 3600
    },
    "input_schema_digest": "sha256:5cb8698aefc78e67b2e37f1cea6849af1e2f17dfa14d2d6d85d0391383a9cdb1",
    "offer_id": "inbox.receive",
    "offer_revision": "receive-duration-r2",
    "offer_revision_digest": "sha256:0de2e006db131b0f1dbc9e533d7c8068b5185d8185b614a632f308d1d29beff4",
    "output_schema_digest": "sha256:01877423c3ee9db3adda95e24a07be35cee1731aa9c9a70b100513b1157575ff"
  }),
});
const data = await res.json();
cURL
curl -X POST \
  "https://ausca.com/v1/open-inbox" \
  -H "Content-Type: application/json" \
  -d '{"canonicalizer_version":"runx.receipt.c14n.v1","idempotency_key":"ausca-x402-discovery-example","input":{"duration_seconds":3600},"input_schema_digest":"sha256:5cb8698aefc78e67b2e37f1cea6849af1e2f17dfa14d2d6d85d0391383a9cdb1","offer_id":"inbox.receive","offer_revision":"receive-duration-r2","offer_revision_digest":"sha256:0de2e006db131b0f1dbc9e533d7c8068b5185d8185b614a632f308d1d29beff4","output_schema_digest":"sha256:01877423c3ee9db3adda95e24a07be35cee1731aa9c9a70b100513b1157575ff"}' \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "invocation": {
    "invocation_id": "ausca-discovery-example",
    "offer_revision_digest": "sha256:0de2e006db131b0f1dbc9e533d7c8068b5185d8185b614a632f308d1d29beff4",
    "output": {
      "resource_lease": {
        "address": "inbox+0123456789abcdef0123456789abcdef01234567.89abcdef01234567@mail.ausca.com",
        "created_at": "2026-09-01T00:00:00Z",
        "expires_at": "2026-09-01T01:00:00Z",
        "inbox_id": "inb_0123456789abcdef0123456789abcdef01234567",
        "schema": "ausca.agent_inbox.lease.v1",
        "state": "active"
      }
    },
    "output_digest": "sha256:7d53e13cbbd9b11c67b03cf6c485ab0a955c36a436ded19beda0098ae8e09227",
    "receipt_ref": {
      "type": "receipt",
      "uri": "runx:receipt:discovery-example"
    },
    "state": "succeeded",
    "updated_at": "2026-01-01T00:00:00Z"
  },
  "status": "accepted"
}

Payment details

Pay to0x26572ff23c6c52bfb1a69cb0c9114a8be443b422
AssetUSDC · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase
Schemesexact

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