Define a Golem tool in TypeScript

Build a definition with toolDefinition(...).body(...), then register one implementation object:

import { ok, toolDefinition } from '@golemcloud/golem-ts-sdk';
import { z } from 'zod/v4';
 
export const echo = toolDefinition('echo')
  .version('1.0.0')
  .body((body) =>
    body.positional('value', z.string()).returns(z.string()),
  );
 
echo.implement({
  echo: async ({ value }) => ok(value),
});

The implementation key is the generated command name. Use the body builder for positional, option, flag, tail, stdin/stdout/stderr, result, and declared-error metadata; use Standard Schema values such as Zod schemas for typed data. Provider handlers return ok(result) or a declared err(...). Call .implement(...) only once per definition.