Free visual cron expression builder. Build cron schedules with dropdowns, see human-readable descriptions and next 5 execution times. No signup required.
About hookstream
hookstream is the modern event gateway for developers who need webhooks that just work. It receives, transforms, and delivers webhooks reliably with real-time monitoring, automatic retries, circuit breakers, and instant database sync.
Key features
- Webhook ingestion with HMAC signature verification for 15+ providers (Stripe, GitHub, Shopify, etc.)
- Content-based routing and filtering with 9 operators
- JSONata transforms for payload reshaping
- Reliable delivery with exponential/linear/fixed retries and circuit breakers
- 8 destination types: HTTP, AWS SQS, S3, EventBridge, GCP Pub/Sub, Kafka, RabbitMQ, WebSocket
- Real-time event streaming via WebSocket
- Instant Database — sync webhooks to queryable collections
- Topics and pub/sub fan-out
- Event replay and archival
- Free webhook testing with no signup required
API
Base URL: https://hookstream.io/v1
Authentication: API key via X-API-Key header (hs_live_* or hs_test_*) or session cookie.
Full API reference: Authentication |
Sources |
Destinations |
Connections |
Events |
Metrics
AI Agent Integration
hookstream is designed for AI agent use with three auth levels:
- Zero-auth (Agent API): POST https://hookstream.io/v1/agent/sessions — creates ephemeral webhook endpoints, no credentials needed. Sessions last 14 days, 2,000 requests.
- API Key: Full CRUD access via X-API-Key header. Get a key from the dashboard or run:
npm install -g @hookstream/cli && hookstream login (opens browser, saves key to ~/.config/hookstream/config.json)
- Environment variable: Set HOOKSTREAM_API_KEY for agent scripts. All CLI commands support --json flag for machine-readable output.
Agent API Endpoints (no auth)
- POST https://hookstream.io/v1/agent/sessions — Create ephemeral webhook endpoint
- GET https://hookstream.io/v1/agent/sessions/:id — Get session + events
- PATCH https://hookstream.io/v1/agent/sessions/:id/response — Configure custom response
- PATCH https://hookstream.io/v1/agent/sessions/:id/forwarding — Forward webhooks to local server
- GET https://hookstream.io/v1/agent/sessions/:id/export — Export as NDJSON/CSV
Plans
- Free: $0/mo — 50K events, 10 sources, 5 destinations, 7-day retention
- Pro: $19/mo — 1M events, unlimited sources/destinations, 30-day retention
- Enterprise: $99/mo — 10M events, unlimited, 90-day retention