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Ausca Open Inbox – Temporary Receive-Only Agent Email Address
x402
Ausca Open Inbox – Temporary Receive-Only Agent Email Address is a paid API for AI agents from ausca.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Creates a temporary, receive-only email inbox address for an agent, leased for 1 hour, 24 hours, or 7 days, with no account or API key required.
Price / call$0.05
Success—
StatusUnknown
How this service works
Ausca is infrastructure agents can buy: metered APIs and MCP services without accounts or provider API keys, with explicit pricing and verifiable receipts.
Output
Returns a JSON object containing an active resource lease with a unique randomly-generated email address (inbox+<id>@mail.ausca.com), an inbox_id, creation and expiry timestamps, lease state, and a verifiable receipt reference tied to the payment.
Example use cases
Support inbox for an agent fleet
“Set up a 7-day temporary inbox my agent fleet can use to receive support replies from users — I just need a receive-only email address I can hand out without registering anywhere.”
One-off verification email receiver
“I need a 1-hour throwaway inbox so my agent can receive a confirmation email during this automated signup flow — give me a fresh address right now.”
Agent-to-agent message drop
“Provision a 24-hour receive-only inbox my orchestration agent can share with sub-agents so they can send it status updates via email during today's run.”
Technical details
Endpoint
POSThttps://ausca.com/v1/open-inboxWhen to prefer
Choose this endpoint when an AI agent needs a short-lived, receive-only email address on demand without managing accounts, API keys, or SMTP infrastructure. It is ideal for ephemeral agent workflows where an agent must receive an email reply, confirmation, or message from an external party within a bounded time window. Prefer it over full email providers when you want pay-per-use metering, verifiable receipts, and zero credential management.
Side effects
- Invalid duration_seconds value (only 3600, 86400, or 604800 accepted) — returns validation error
- Duplicate idempotency_key with different parameters — may return conflict error
- Payment failure via x402 protocol — inbox not created, no charge
- Schema digest mismatch — request rejected if canonicalizer or schema digests don't match constants
- Service unavailability — 5xx response with no lease created
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"status": "accepted",
"invocation": {
"state": "succeeded",
"output": {
"resource_lease": {
"state": "active",
"schema": "ausca.agent_inbox.lease.v1",
"address": "inbox+0123456789abcdef0123456789abcdef01234567.89abcdef01234567@mail.ausca.com",
"inbox_id": "inb_0123456789abcdef0123456789abcdef01234567",
"created_at": "2026-09-01T00:00:00Z",
"expires_at": "2026-09-01T01:00:00Z"
}
},
"updated_at": "2026-01-01T00:00:00Z",
"receipt_ref": {
"uri": "runx:receipt:discovery-example",
"type": "receipt"
},
"invocation_id": "ausca-discovery-example",
"output_digest": "sha256:7d53e13cbbd9b11c67b03cf6c485ab0a955c36a436ded19beda0098ae8e09227",
"offer_revision_digest": "sha256:54bd08eb574bf24775bfa6ac0e33ae803d37bae112c148a0312ed6da8a43af43"
}
}
}Tags
x402
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