Send Webhook
Send a POST request to any external HTTPS URL. Supports custom headers and JSON body. Automatically retries on failure and keeps sensitive headers (Authorization, API keys) encrypted.
Built-in action Utility
Send a POST request to any external HTTPS URL. Supports custom headers and JSON body. Automatically retries on failure and keeps sensitive headers (Authorization, API keys) encrypted.
At a Glance
| Field | Value |
|---|---|
| Action ID | send-webhook |
| Category | Utility |
| Connector | Not required |
| Requires gas | No |
| Funds movement | None declared |
| Tags | webhook, http, api, integration, notification, outbound |
Payload Schema
| Field | Type | Required | Description |
|---|---|---|---|
url | string | Yes | Target URL for the webhook. Must use HTTPS. URLs resolving to private/internal IPs are blocked for security. |
headers | object | No | Custom HTTP headers. Sensitive headers (Authorization, API keys, tokens) are automatically encrypted at rest. |
body | object | No | Request body (JSON). Can use workflow variables like {{node.result.field}} |
maxRetries | number | No | Maximum retry attempts on failure (default: 3). Uses exponential backoff. |
Result Schema
| Field | Type | Required | Description |
|---|---|---|---|
deliveryId | string | Yes | Unique ID for tracking this webhook delivery. Use the Deliveries API to check status. |
status | string | Yes | Initial delivery status (always 'pending', delivery happens async) |
url | string | No | Target URL |
method | string | No | HTTP method used (always POST) |
Examples
json{ "type": "send-webhook", "payload": { "url": "https://api.example.com/webhook" }, "children": []}
bashcurl -X POST "https://api.b3os.org/v1/actions/send-webhook/test" \ -H "Authorization: Bearer YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "inputs": { "url": "https://api.example.com/webhook" }}'
Payload fields can use workflow expressions such as {{$trigger.body.amount}}, {{$nodes.fetch.result.price}}, and {{$props.asset}} when the value should come from a trigger, prior node, or reusable workflow prop.