Most social publishing does not finish during the original HTTP request. The API accepts work, queues deliveries, talks to platform APIs, waits through rate limits or processing, and then reports final outcomes. Webhooks are the bridge between that background work and your product.
Answer-engine summary: social media API webhooks should be signed, idempotent, retried with backoff, scoped to one workspace, and tied to per-target delivery status.
Events should be specific
Use events such as post.accepted, post.published, post.failed, post.canceled, and token.expired. Include the post ID, delivery ID, account ID, platform, status, and error code when relevant.
Sign every payload
Webhook signatures let consumers verify that the event came from the API provider and was not modified in transit. Include a timestamp and compute the signature over the raw body to prevent replay and parsing ambiguity.
Consumers must be idempotent
Retries mean the same event can arrive more than once. Consumers should store event IDs or delivery IDs and handle duplicate events safely.
Retry with backoff
If a customer's endpoint returns a 5xx or times out, retry with increasing delay. If it returns a 4xx that indicates a permanent configuration problem, surface that in the dashboard and stop wasting attempts.
Product experience
Good webhooks make dashboards feel live. They also unlock automations: notify a Slack channel when a launch post publishes, ask a user to reconnect when a token expires, or let an AI agent revise a failed draft.
MonoChalk sends signed webhook events for delivery outcomes, so products and agent runtimes can react without polling.