Discord Webhook Alerts
Push product and operational alerts into a Discord channel without exposing the webhook.
What it adds
An outbound Discord destination that receives selected app events as formatted channel messages.
What your agent is told to do
5
What your agent is told to do
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Find the events already worth announcing internally — signups, failed payments, error spikes, support requests — and let an operator choose which of them route to a Discord destination. Do not fan out every event the app emits.
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Store the webhook target as a server-side secret. It must never reach the browser, a client bundle, a log line, or an error report, because anyone holding it can post to the channel indefinitely.
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Send through the app's existing background-job system so a slow or unreachable Discord never blocks the request that triggered the event.
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Treat every message as carrying untrusted content. Neutralise mention syntax, role and channel references, and link markup in any user-supplied text before it is included.
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Do not build a second notification pipeline. If the app already routes notifications to email or another channel, add Discord as one more destination on that pipeline so preferences, throttling, and audit stay in one place.
Edge cases it handles
8
Edge cases it handles
8- A webhook target must be validated when it is saved, by confirming it accepts a test message, and the validation result must be reported without ever echoing the target itself back to the screen or into logs.
- User-supplied text that contains mention syntax must not be able to notify everyone in the channel. Escape or strip mentions rather than trusting that the content looks harmless.
- Discord enforces limits on message length and on the number and size of structured fields. Truncate on a sensible boundary and link back to the app for the full record rather than letting the send fail.
- A webhook deleted on the Discord side will keep rejecting sends forever. Detect the permanent rejection, mark the destination as broken, stop retrying, and tell an operator in the app.
- A send that times out may still have been delivered. Attach a stable identifier per event and keep a record of what was sent, so a retry after a timeout does not post the same alert twice.
- Discord rate-limits aggressively when a burst arrives. Honour the throttling signal, back off, and queue rather than dropping alerts on the floor.
- A busy hour must not turn into hundreds of near-identical messages. Collapse repeated events of the same kind into a single summary above a threshold.
- When Discord is down entirely, the triggering action must still succeed and the alert must be retried later or visibly abandoned, never silently lost.
Definition of done
8
Definition of done
8- Operators choose which event types route to Discord, and the default is nothing.
- The webhook target is stored server-side and appears in no log, response, or client asset.
- Alerts are delivered from a background job and never delay the originating request.
- User-supplied content cannot trigger a channel-wide or role mention.
- Retries after a timeout do not produce duplicate messages in the channel.
- A deleted or rejected webhook is marked broken, stops retrying, and is surfaced to an operator.
- The feature matches the existing design system.
- No existing functionality is broken.
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What it does
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How it works
- 1 Store one record per device registration, tied to the account signed in at the time, the platform it came from, and when it was last confirmed working, and let one account hold many of them.
- 2 Send from the app's existing background-job system with the provider credentials held server-side, and treat every send as a job that can be retried rather than work done inline during a request.
- 3 Decide, per notification type, whether the payload is meant to be displayed by the platform or handled by the app, and keep that decision the same on every platform. The same event behaving as a visible alert on one platform and a silent update on another produces bugs nobody can reproduce.
Copy the prompt
No account needed
Add this feature to my app:
https://addthisfeature.com/x/firebase-cloud-messaging
OneSignal Push Notifications
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How it works
- 1 Find the events the app already notifies on by email or in-app, and treat push as another channel for those same events rather than a separate notification system with its own triggers.
- 2 Record the link between a push subscription and an account on the server, established at sign-in and severed at sign-out, so a device that changes hands does not keep receiving the previous user's notifications.
- 3 Hold the provider credentials server-side and send every message from the app's existing background-job system, so a slow or failing provider never blocks a web request.
Copy the prompt
No account needed
Add this feature to my app:
https://addthisfeature.com/x/onesignal-push-notifications
SendGrid Transactional Email
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What it does
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How it works
- 1 Route transactional mail through the app's existing mail layer with SendGrid behind it as one adapter. The rest of the codebase must never construct provider-specific payloads directly, or swapping or adding a provider later means touching every send site.
- 2 Enumerate the app's transactional messages — verification, password reset, receipts, alerts — and give each a template with a declared set of variables that is validated before the message is queued.
- 3 Send from the app's background-job system with a stable per-message identifier, and store the provider's message identifier on the record as soon as it is returned so support can trace a specific email later.
Copy the prompt
No account needed
Add this feature to my app:
https://addthisfeature.com/x/sendgrid-transactional-email
How it works
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1
Copy the link
Grab the Markdown instruction URL for this feature.
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Give it to your AI
Paste it into Claude Code, Cursor, v0, Lovable — whatever you build with.
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It inspects, then implements
Your agent reads your existing app first, then adds the feature to fit it.
Works with your stack
These instructions are written to adapt. They tell the agent to detect your framework, match your existing design system, and reuse what you already have — rather than assuming a particular stack.
Need it tighter than that? Customize the feature and tell it exactly what you're running.