PRACTICAL FIELD GUIDE
Deduplicate webhook processing by event identity
A receiver should avoid repeating an action if the same event is presented more than once. Deduplication belongs in the processing design even when the sender does not promise retries.
MCPBackend editorial team · · Examples are illustrative
Put it into practice
- Record the event or delivery identifier alongside the processing outcome.
- Make the state transition and deduplication decision reliable under concurrent requests.
- Test the same signed fixture twice and verify that the business action runs only once.
What this looks like
ILLUSTRATIVE EXAMPLE
A support operator replays a captured event during investigation. The receiver recognizes the identifier instead of sending a second notification.
A boundary to keep clear
A process-local set is lost on restart and is not shared across instances. Use durable state when duplicate effects matter.
MCPBackend context
MCPBackend webhooks currently make one delivery attempt with a five-second timeout and no retry or ordering guarantee. Treat them as change notifications, not a durable event ledger. For workflows that must complete, use a durable processing system you operate and reconcile its state against the data API.
Take the next step
Inspect the current project contract, try the change with disposable data, and verify the result through the same credentials your app will use. Record the expected response and one denied-access case before release.
Sources and further reading
These references explain the underlying protocols and design principles. For supported MCPBackend operations and exact request shapes, inspect your project’s generated API contract.