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agmail Inbox 4-Hour Renewal
x402
agmail Inbox 4-Hour Renewal is a paid API for AI agents from agmail.shveik.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-10).
Renews or extends an existing agmail receive-only email inbox by 4 hours, paid via x402 stablecoin micropayment
Price / call$0.05
Success—
StatusUnknown
How this service works
Receive-only email inboxes for AI agents, by the hour. Pay in stablecoins with x402 or MPP; one call returns the code or the link.
Output
Returns a JSON object with the renewal status ('queued'), the plan duration ('4h'), the inbox_id being renewed, and a human-readable 'next' field explaining that the extension will be applied once payment settles (typically within a minute). The agent should poll the inbox status endpoint to confirm activation.
Example use cases
Keep agent inbox alive during workflow
“My agent's email inbox ib_abc123def456 is expiring soon and it's still waiting for a verification email — renew it for another 4 hours using secret 'sk_test_abc' so the workflow doesn't break.”
Auto-renew inbox before expiry
“Set up automatic renewal for my agmail inbox ib_fedcba987654 every 4 hours using my secret key so it never goes offline while my agent is running.”
Support inbox for an agent fleet
“I have a fleet of AI agents each with their own agmail inbox — renew inbox ib_111222333444 for 4 hours right now using secret 'mysecret42' so that agent keeps receiving task assignments.”
Technical details
Endpoint
POSThttps://agmail.shveik.dev/v1/x402/inbox-4h-renew?utm_source=zero.xyzWhen to prefer
Use this endpoint when you have an existing agmail inbox (identified by inbox_id) that is approaching expiry and needs to be extended by exactly 4 hours. Choose this over creating a new inbox when you want to preserve the same email address and maintain continuity for incoming messages. Prefer this when your agent workflow requires a stable, known inbox address and you want to pay per-use in USDC via x402 micropayment without a subscription.
Side effects
- Invalid inbox_id format (must match ^ib_[0-9a-f]{12}$) — returns 4xx validation error
- Incorrect or missing secret — returns authentication failure
- Payment not settled or x402 payment rejected — renewal queued but not applied until confirmed
- Inbox already expired and no longer renewable — may return 404 or error
- Network or payment provider timeout — renewal remains in 'queued' state indefinitely
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| secret | string | |
| inbox_id | string |
Output
Schema · Response
{
"type": "json",
"example": {
"next": "The extension is applied once the payment has settled (a minute or so); GET /v1/…",
"plan": "4h",
"status": "queued",
"inbox_id": "ib_0123456789ab"
}
}Tags
x402
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