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Machine Inbox Verification Inbox
x402
Machine Inbox Verification Inbox is a paid API for AI agents from machineinbox.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).
Creates a disposable one-hour email inbox for receiving a single signup verification code (up to 10 messages, no reply capability)
Price / call$0.05
Success—
StatusUnknown
How this service works
Pay-per-use email inboxes for software agents. Pay $2.00 through Stripe Machine Payments Protocol or x402 USDC, receive mail, and reply over HTTP.
Output
Returns a JSON object containing the inbox UUID, the assigned email address (e.g. m_example@in.machineinbox.com), the expiry timestamp (one hour from creation), and a bearer-style access token (mi_live_...) used to poll or read incoming messages.
Example use cases
Agent-driven service registration
“My automation needs to sign up for a new web service and receive the email verification code — can you create a temporary Machine Inbox verification inbox so the agent can grab that code before it expires?”
OTP capture for integration testing
“I'm running automated tests that trigger email OTPs from our staging environment — spin up a short-lived Machine Inbox verification address so the test suite can catch and parse the code.”
Bot account bootstrap workflow
“I need my agent to register a new account on a third-party platform and confirm the email — create a disposable one-hour Machine Inbox verification inbox so it can receive the confirmation code automatically.”
Technical details
Endpoint
POSThttps://machineinbox.com/api/v1/inboxes/verification?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a machine-readable, pay-per-use disposable email address specifically for receiving a single verification code during an automated signup or registration flow, and when a one-hour lifetime is sufficient. It is purpose-built for agents (x402 micropayment native, structured JSON response) and is preferable to general-purpose temporary email services when you need programmatic inbox creation with access tokens and predictable expiry.
Side effects
- Payment failure (insufficient USDC balance or x402 payment rejected) — inbox not created
- Malformed request body — 400 error if required fields missing
- Rate limiting or quota exceeded — service may reject rapid successive calls
- Inbox creation service unavailable — transient 5xx error
- Token returned but inbox address undeliverable — messages may not arrive if DNS/MX propagation delayed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"inbox": {
"id": "uuid",
"address": "m_example@in.machineinbox.com",
"expiresAt": "2026-08-18T13:00:00.000Z"
},
"token": "mi_live_..."
}
}Tags
x402
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