@deep-assistant/agent/src/tool/write.ts

A minimal, public domain AI CLI agent compatible with OpenCode's JSON interface. Bun-only runtime.

import z from "zod"
import * as path from "path"
import { Tool } from "./tool"
import DESCRIPTION from "./write.txt"
import { Instance } from "../project/instance"

export const WriteTool = Tool.define("write", {
  description: DESCRIPTION,
  parameters: z.object({
    content: z.string().describe("The content to write to the file"),
    filePath: z.string().describe("The absolute path to the file to write (must be absolute, not relative)"),
  }),
  async execute(params, ctx) {
    // No restrictions - unrestricted file system access
    const filepath = path.isAbsolute(params.filePath) ? params.filePath : path.join(Instance.directory, params.filePath)

    const file = Bun.file(filepath)
    const exists = await file.exists()

    // Write the file without permission checks
    await Bun.write(filepath, params.content)

    return {
      title: path.relative(Instance.worktree, filepath),
      metadata: {
        diagnostics: {},
        filepath,
        exists: exists,
      },
      output: "",
    }
  },
})