PRACTICAL FIELD GUIDE
Prevent a webhook consumer from creating an event loop
A consumer that writes back to the same subscribed table can trigger another notification. Define which updates are meaningful and make repeated processing converge.
MCPBackend editorial team · · Examples are illustrative
Put it into practice
- Map which incoming events cause which outgoing writes.
- Avoid writes when the desired state already exists and narrow subscription patterns where possible.
- Test a full cycle and observe that the workflow stops after the intended transition.
What this looks like
ILLUSTRATIVE EXAMPLE
An updated event causes the receiver to save an unchanged status, generating another updated event and repeating indefinitely.
A boundary to keep clear
Idempotency must cover the write behavior, not just one request identifier. Distinct events can still form a loop.
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.