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Create a small LangChain JavaScript agent with one custom tool using createAgent, tool, and a Zod schema, with a runnable end-to-end example.
Agents
Build LLM agents in JavaScript with tool calling, using libraries like LangChain and the Vercel AI SDK, with small runnable examples.
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A minimal OpenAI function calling example in JavaScript using the Responses API and a local tool, including the two-step call-the-tool then answer loop.- Published on
A minimal Vercel AI SDK tool calling example using generateText, tool, stepCountIs, and a Zod inputSchema, with the tool loop handled for you.