http.call

Operation: http.call
Category: http

Make an HTTP request to an external URL

Runtime

Type: Native (built-in)
Timeout: 300s
Retries: 3 (ExponentialWithJitter)

Inputs

Name	Type	Required	Default	Description
body	JSON	No	—	Request body (for POST/PUT/PATCH)

Outputs

Name	Type	Description
status	Number	HTTP status code
body	JSON	Response body

Default Configuration

{
  "method": "GET",
  "timeout_ms": 30000
}

Usage

TypeScript

import { WorkflowBuilder } from "@fabric-platform/sdk";

const workflow = new WorkflowBuilder("my-workflow")
  .node("http-call", "tool", (n) =>
    n.config({
      operation: "http.call",
      // ... node-specific config
    })
  )
  .build();

Python

from fabric_platform import FabricClient

fabric = FabricClient(api_key="fab_xxx")

wf_id = fabric.upsert_workflow("my-workflow", nodes=[
    {
        "key": "http-call",
        "kind": "tool",
    },
])

Rust

use fabric_sdk::FabricClient;

let client = FabricClient::new("http://localhost:3001", api_key)?;

let wf_id = client.upsert_workflow("my-workflow", serde_json::json!({
    "nodes": [{
        "key": "http-call",
        "kind": "tool"
    }]
})).await?;

curl

curl -X POST http://localhost:3001/v1/workflow-definitions \
  -H "Authorization: Bearer $FABRIC_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "name": "my-workflow",
    "nodes": [{
      "key": "http-call",
      "kind": "tool"
    }]
  }'

Example

{
  "key": "call-webhook",
  "operation": "http.call",
  "config": {
    "url": "https://api.example.com/webhook",
    "method": "POST",
    "headers": { "Authorization": "Bearer {{context.api_token}}" },
    "timeout_ms": 10000
  },
  "inputs": [{ "name": "body", "path": "$context.payload" }],
  "outputs": [
    { "name": "status", "path": "$context.webhook_status" },
    { "name": "body", "path": "$context.webhook_response" }
  ]
}

Common Errors

http.call requires 'url' in config

Cause: The url field is missing from the node’s config object

Fix: Add a url field to the node config — this is a config value, not an input binding