state.set

Operation: state.set
Category: state
Tags: state, storage, persistence

Write a value to persistent workspace state

Runtime

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

Inputs

Name	Type	Required	Default	Description
namespace	String	Yes	—	State namespace (e.g., ‘engagement_model’)
key	String	Yes	—	Key within the namespace
value	JSON	Yes	—	Value to store (any JSON)

Outputs

Name	Type	Description
success	Boolean	Whether the write succeeded

Usage

TypeScript

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

const workflow = new WorkflowBuilder("my-workflow")
  .node("state-set", "tool", (n) =>
    n.config({
      operation: "state.set",
      // ... 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": "state-set",
        "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": "state-set",
        "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": "state-set",
      "kind": "tool"
    }]
  }'

Example

{
  "key": "save-model",
  "operation": "state.set",
  "inputs": [
    { "name": "namespace", "path": "$context.state_ns" },
    { "name": "key", "path": "$context.model_key" },
    { "name": "value", "path": "$context.trained_model" }
  ],
  "outputs": [{ "name": "success", "path": "$context.save_ok" }]
}

Common Errors

Missing required input: value

Cause: The value input is not bound or resolves to null

Fix: Bind value to a context path containing the JSON data to store