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Acknowledge (ACK) Inbox Events
Acknowledge (ACK) Inbox Events is a free API for AI agents from inbox.withzero.xyz, Free, status unknown (last checked 2026-09-14).
Marks one or more drained inbox events as handled so they no longer appear in subsequent drain calls.
Price / callFree
Success—
StatusUnknown
How this service works
Mark drained events handled so they stop appearing. 📖 Full guide: https://inbox.withzero.xyz/llms.txt
Output
Returns a JSON object with an 'acked' field containing the count of messages that were newly acknowledged (i.e., transitioned from unacked to acked state). Messages already acked are not double-counted.
Example use cases
Batch cleanup after processing support tickets
“I just finished responding to those support ticket notifications from my inbox. Can you mark all these message IDs as handled so they don't clutter my queue anymore: ['msg-001', 'msg-002', 'msg-003', 'msg-004']?”
Clear acknowledged alerts from monitoring system
“My monitoring system fired off those alerts earlier and I've addressed all the issues. Mark these event IDs as processed so they disappear from my inbox the next time I check: ['alert-2024-001', 'alert-2024-002', 'alert-2024-003'].”
Dismiss batch of handled customer requests
“I've worked through the customer requests that came in this morning. Let me mark these as done so they stop appearing in my inbox: ['req-abc123', 'req-def456', 'req-ghi789', 'req-jkl012'].”
Technical details
Endpoint
POSThttps://inbox.withzero.xyz/api/v1/inbox/ackWhen to prefer
Use this endpoint after draining events from your inbox (GET /api/v1/inbox) and successfully processing them. This is the final step in the drain-process-ack lifecycle. Call this to prevent already-handled events from reappearing in future drain calls. Supports up to 100 message IDs per call for efficient batch acknowledgment.
Side effects
- Empty or missing 'ids' array returns a validation error
- More than 100 IDs in one call exceeds maxItems limit and is rejected
- Malformed UUIDs that don't match the required pattern cause a 400 error
- Invalid or expired signed proof credential causes authentication failure
- IDs that don't belong to the caller's inbox are silently ignored or rejected
Input
{
"ids": [
"3f2504e0-4f89-11d3-9a0c-0305e82c3301",
"a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11"
]
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| idsrequired | array | Message ids to mark handled. |
Output
{
"acked": 0
}Schema · Response
| Field | Type | Description |
|---|---|---|
| ackedrequired | number | Number of messages newly acked. |
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