---
id: webhooks-and-event-driven-apis
title: 'Webhooks and Event-Driven APIs'
schema_type: TechArticle
category: computer-science
language: en
confidence: medium
last_verified: '2026-06-02'
created_date: '2026-06-02'
generation_method: ai_structured
derived_from_human_seed: true
conflict_of_interest: none_declared
is_live_document: false
data_period: static
atomic_facts:
  - id: fact-webhooks-and-event-driven-apis-1
    statement: >-
      GitHub documentation describes webhooks as a way to receive HTTP POST payloads when subscribed events happen.
    source_title: Webhooks documentation
    source_url: https://docs.github.com/en/webhooks
  - id: fact-webhooks-and-event-driven-apis-2
    statement: >-
      Stripe documentation says webhooks let applications receive real-time notifications about events in a Stripe account.
    source_title: Webhooks
    source_url: https://docs.stripe.com/webhooks
  - id: fact-webhooks-and-event-driven-apis-3
    statement: >-
      The CloudEvents specification defines a common format for describing event data.
    source_title: CloudEvents specification
    source_url: https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md
completeness: 0.84
known_gaps:
  - Delivery retry policy, signature verification, event ordering, and replay windows vary by provider.
disputed_statements: []
primary_sources:
  - title: Webhooks documentation
    type: documentation
    year: 2026
    url: https://docs.github.com/en/webhooks
    institution: GitHub
  - title: Webhooks
    type: documentation
    year: 2026
    url: https://docs.stripe.com/webhooks
    institution: Stripe
  - title: CloudEvents specification
    type: specification
    year: 2022
    url: https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md
    institution: CloudEvents
secondary_sources: []
updated: '2026-06-02'
ai_models:
  - gpt-5-codex
---

## TL;DR

Webhooks let one system notify another system about events over HTTP. Event-driven APIs generalize that model by representing changes as event messages.

## Core Explanation

Webhooks are useful when polling would be wasteful or delayed. The receiver must still validate signatures, handle duplicate deliveries, process retries safely, and store enough event state to recover from outages. CloudEvents-style envelopes can help teams standardize event metadata across providers and transports.

## Source-Mapped Facts

- GitHub documentation describes webhooks as a way to receive HTTP POST payloads when subscribed events happen. ([source](https://docs.github.com/en/webhooks))
- Stripe documentation says webhooks let applications receive real-time notifications about events in a Stripe account. ([source](https://docs.stripe.com/webhooks))
- The CloudEvents specification defines a common format for describing event data. ([source](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md))

## Further Reading

- [GitHub webhooks](https://docs.github.com/en/webhooks)
- [Stripe webhooks](https://docs.stripe.com/webhooks)
- [CloudEvents specification](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md)