Extend the workspace.

import { workflow, constant, text, agent } from "@nodetool-ai/dsl";

// Define an input
const question = constant.string({ value: "What is NodeTool?" });

// Create an agent that processes the question
const reply = agent.run({
  provider: "ollama",
  model: "llama3.2:3b",
  prompt: question.output,
});

// Wrap it in a workflow
const wf = workflow(reply);

// Run it:
//   import { WorkflowRunner } from "@nodetool-ai/kernel";
//   const result = await new WorkflowRunner().run(wf);

The @nodetool-ai packages aren't on npm yet — these imports work from a source checkout today and will work via npm install once published.

// my-nodes/src/SentimentNode.ts
import { BaseNode, prop } from "@nodetool-ai/node-sdk";

export class SentimentNode extends BaseNode {
  static readonly nodeType = "my.text.Sentiment";
  static readonly title = "Sentiment";
  static readonly description = "Score text sentiment from -1 to 1.";
  static readonly metadataOutputTypes = { score: "float" };

  @prop({ type: "str", default: "" })
  declare text: string;

  async process(): Promise<{ score: number }> {
    const score = await analyze(this.text);
    return { score };
  }
}

import { WorkflowRunner } from "@nodetool-ai/kernel";
import { workflow, constant, text } from "@nodetool-ai/dsl";

const a = constant.string({ value: "Hello, " });
const b = constant.string({ value: "NodeTool!" });
const out = text.concat({ a: a.output, b: b.output });

const wf = workflow(out);
const runner = new WorkflowRunner();

runner.on("node_progress", (m) => console.log(m.progress));
runner.on("node_update", (m) => console.log(m.status));

const result = await runner.run(wf);
console.log(result);