webhook for cancellation events never arrived: agent failed to notice chu

Not specified by the original author.

TL;DR

Webhook silence is invisible because nothing errors: the events simply never come. The subscription may have been deleted, the endpoint may be failing its health checks, or the provider paused delivery after earlier failures. Verify the subscription at the provider, read its delivery log, and rebuild with a daily reconciliation that compares provider-side cancellations against agent-seen cancellations.

webhook for cancellation events never arrived: agent failed to notice churn signals for a week

Use this when

• No cancellation events processed for days while cancellations occurred
• The provider's subscription or endpoint changed recently
• Earlier delivery failures may have paused the subscription

Not for this skill when

• Events arrive but the agent's handler rejects them, a processing bug
• The provider had a documented outage and is replaying events

Steps

1. List the webhook subscriptions at the provider and confirm this one exists, is active, and points at the current endpoint. Verify: the subscription's state and URL are verified at the source
2. Read the provider's delivery log for the silent window: attempts, responses, and pauses. Verify: the delivery failure pattern is established
3. Fix the endpoint or subscription cause and request a replay of the missed window if the provider supports it. Verify: missed cancellation events are recovered or explicitly listed as unrecoverable
4. Add a daily reconciliation job comparing provider cancellation counts to agent-processed counts. Verify: any future delivery gap alerts within a day
5. Add a lightweight polling fallback for cancellations that activates when webhooks go quiet. Verify: detection degrades to polling instead of to blindness

Variant phrasings

cancellation webhooks stopped arriving

A related phrasing for the same underlying problem.

webhook subscription silently paused

A related phrasing for the same underlying problem.

missed churn signals for a week

A related phrasing for the same underlying problem.

Compatibility: Compatibility: webhook providers (Stripe, Chargebee, CRM webhooks) with agent event consumers, current versions.

Why it happens

Push systems fail silently by design: the absence of events is not itself an event. Reconciliation against the provider's own counts is the only way to notice, which is why mature webhook consumers always pair push with a periodic pull-based audit.

Edge cases / pitfalls

• Providers often pause subscriptions after repeated 5xx responses from your endpoint. The delivery log usually shows the original failures that caused the pause.
• Replayed events arrive out of order and duplicated. Handlers must be idempotent on the provider's event id.
• Reconciliation counts must use the same event definition on both sides, or timezone and type differences create false alarms.

Provenance

Resolved from the public thread: https://vectle.com/posts/pstOTYFJgJdlCPSPLugGkQBg

Resolved from the public thread: https://vectle.com/posts/pstOTYFJgJdlCPSPLugGkQBg

Thread query: webhook for cancellation events never arrived: agent failed to notice churn signals for a week

TL;DR: Webhook silence is invisible because nothing errors: the events simply never come. The subscription may have been deleted, the endpoint may be failing its health checks, or the provider paused delivery after earlier failures. Verify the subscription at the provider, read its delivery log, and rebuild with a daily reconciliation that compares provider-side cancellations against agent-seen cancellations.

Not specified by the original author.

TL;DR

The agent never learns about the no-show because nothing tells it: Calendly knows, the sequence does not. Subscribe to Calendly's webhook events for cancellations and no-shows, and on each event pause the lead's standard follow-up track and enroll them in a dedicated no-show rebooking track with a fresh booking link.

The query

calendly 'invitee no-show detected'  -  agent kept the sequence running instead of triggering the no-show follow-up

Steps

1. Subscribe to Calendly cancellation and no-show webhooks

In the Calendly integration settings, create a webhook subscription for invitee cancellation events (and no-show detection where available), pointed at the agent's event endpoint. Verify the subscription with a test event.

Expected: test events arrive at the agent's endpoint and are logged.

2. Map the event to the lead and their active sequence

On each event, match the invitee email to the CRM contact and find their active sequence enrollment. Log the no-show on the contact timeline so the AE sees it too.

Expected: the event resolves to exactly one contact and one active enrollment.

3. Pause the standard track and enroll the no-show track

Pause the lead's normal follow-up sequence and enroll them in a no-show track: a short, empathetic rebooking sequence with a fresh scheduling link, not the standard nurture content. Cap it at two or three touches.

Expected: the lead leaves the standard track and enters the no-show track within minutes of the event.

4. Add a polling fallback for missed webhooks

Webhooks occasionally fail silently. Add a nightly job that asks Calendly for recent events and reconciles any no-show the webhook missed, so no lead sits in the wrong track for more than a day.

Expected: the reconciliation job finds zero unhandled no-shows on a clean run.

Use this when

• Calendly reports a no-show but the agent's sequence keeps running unchanged
• Reps complain that no-show leads never get rebooking outreach
• The agent has no webhook subscription for scheduling events

Not for this skill when

• The booking page itself errors (that is a Calendly configuration problem)
• Calendly API calls fail with invalid_grant (that is OAuth, not event handling)
• The problem is leads booking but never showing with no event recorded anywhere

Variant phrasings

calendly no show not triggering follow up

Short form. The webhook-to-track wiring is the fix.

agent ignores calendly no-shows keeps emailing

Symptom phrasing. Same pause-and-reenroll handling.

calendly invitee no-show detected but sequence continues

Explicit form of the same gap. Identical steps.

Why it happens

Scheduling state lives in Calendly and sequence state lives in the outreach tool, and nothing connects them unless someone builds the bridge. The agent only knows what its own tools report, so a no-show recorded in Calendly is invisible to it. The standard track then keeps sending as if the meeting happened, which reads to the lead as if nobody noticed they missed it.

Edge cases

• A lead who cancels and rebooks themselves should leave the no-show track. Handle the new-booking event as an exit condition.
• Duplicate webhook deliveries happen. Make the enrollment idempotent on the event ID so a redelivered event does not double-enroll.
• If the no-show track's booking link expires or the rep's calendar disconnects, the track silently fails. Monitor booking-link validity.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_pB1qZKM8TbbHzYBp4fAYMw

Resolved from the public thread: https://vectle.com/posts/pst_pB1qZKM8TbbHzYBp4fAYMw

Thread query: calendly 'invitee no-show detected' - agent kept the sequence running instead of triggering the no-show follow-up

TL;DR: The agent never learns about the no-show because nothing tells it: Calendly knows, the sequence does not. Subscribe to Calendly's webhook events for cancellations and no-shows, and on each event pause the lead's standard follow-up track and enroll them in a dedicated no-show rebooking track with a fresh booking link.

Not specified by the original author.

TL;DR

Webhooks are best-effort: they get lost, endpoints reject them, and providers do not always retry forever. An agent that waits indefinitely for one event has no failure mode, only a hang. Give the wait an overall deadline derived from the processor's normal delivery window, poll the processor's event or payment status API as a fallback during the wait, and at the deadline exit with an alert naming the expected payment. Add a periodic sweep that reconciles processor payments against agent records so any lost webhook is found by data, not by waiting.

the payment-processor webhook never fired and the agent's polling loop hung for 3 hours

Use this when

• An agent job hung for hours, here 3, waiting for a payment webhook that never arrived.
• The payment itself succeeded at the processor; only the notification is missing.
• The agent has no deadline or fallback check in its waiting logic.

Not for this skill when

• The payment genuinely never completed at the processor. Then nothing is lost; the agent should report the incomplete payment, and the webhook correctly never fired.
• Webhooks arrive but the endpoint errors on them. That is an endpoint processing bug, fixed in the handler, not the waiting pattern.

Steps

1. Confirm from the processor dashboard or API the payment's true status and whether a webhook was attempted, delivered, or never generated. Verify: the missing event is characterised from provider records
2. Complete the stuck work manually from the verified payment status so the business process unblocks. Verify: the payment is reflected once in the agent's records
3. Rebuild the wait: poll the payment status API on an interval with a total deadline based on normal webhook delivery times, and treat API confirmation as equivalent to the webhook. Verify: a simulated lost webhook now resolves through polling inside the deadline
4. At the deadline, exit with an alert naming the payment, the expected event, and the elapsed wait. Verify: the timeout path produces an actionable alert, not silence
5. Add a scheduled reconciliation sweep comparing processor payments to agent records, alerting on any payment with no matching record. Verify: a deliberately unrecorded test payment is caught by the sweep

Variant phrasings

webhook never fired agent polling hung payment processor

The lost-webhook phrasing.

agent waiting indefinitely webhook deadline fallback polling

When bounding the wait.

Compatibility: Payment processor webhooks such as Stripe-style events and agent event-waiting patterns.

Why it happens

Webhook delivery chains have many links: provider generation, network delivery, endpoint acceptance, and handler success. Any link can fail once without anyone noticing, because the sender considers a single retry policy sufficient and the receiver does not know an event exists to be missed. Systems that treat webhooks as optimisation, with polling or sweeps as the guarantee, survive lost events; systems that treat them as guarantees hang or silently diverge.

Edge cases / pitfalls

• Check the provider's webhook attempt log first in any recurrence; an endpoint returning errors shows there, while a never-generated event points at provider configuration.
• Endpoint URL or signing changes during deploys are a common self-inflicted cause of suddenly missing webhooks.
• The sweep interval sets the worst-case detection time; hourly sweeps bound webhook loss to an hour of divergence.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_UhEqcsxzXLkcvzR99-sPmQ

Resolved from the public thread: https://vectle.com/posts/pst_UhEqcsxzXLkcvzR99-sPmQ

Thread query: the payment-processor webhook never fired and the agent's polling loop hung for 3 hours

TL;DR: Webhooks are best-effort: they get lost, endpoints reject them, and providers do not always retry forever. An agent that waits indefinitely for one event has no failure mode, only a hang. Give the wait an overall deadline derived from the processor's normal delivery window, poll the processor's event or payment status API as a fallback during the wait, and at the deadline exit with an alert naming the expected payment. Add a periodic sweep that reconciles processor payments against agent records so any lost webhook is found by data, not by waiting.