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Code-Mode Library

Code-Mode Library is an open-source TypeScript library that gives AI agents a code-execution interface for accessing registered MCP and UTCP tools. Agents can discover tools, combine calls in TypeScript and process results within a workflow.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Code-Mode Library — OpenViST project profile in MCP & Tooling.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when an agent needs to work across registered MCP or UTCP tools through generated code, especially for workflows that combine several operations and process their outputs.

Who it is for

  • Developers building AI-agent workflows around MCP or UTCP tools.
  • Teams that want agents to compose multiple tool calls and process their results in code.
  • Developers choosing between a shell-based CLI, an MCP server integration or direct TypeScript use.

Documented uses

  • Discover relevant registered tools for a task.
  • Chain multiple tool operations in one TypeScript execution.
  • Transform tool results into a compact output, such as a pull-request summary.
Before you choose

Requirements & limits

The public GitHub repository identifies the project as open source under the MPL-2.0 license.

  • Choose the UTCP CLI route when the agent can run shell commands; the README recommends it for shell-capable agents.
  • Use the separate Code Mode MCP server for MCP-only clients.
  • Direct TypeScript integration requires registering tool configurations; the documented MCP example also imports the separate @utcp/mcp plugin.
  • Tool access is through registered UTCP or MCP servers, rather than direct exposure of every tool as an individual agent tool.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install and initialize Code-Mode with TypeScript

Set up the Code-Mode client, register an MCP tool manual, and execute a TypeScript tool chain.

Before you start

  • Node.js/npm environment for the documented npm package installation.
  • An MCP server configuration to register as a manual.

Steps

  1. Install the library with the command below.

    Documented command
    npm install @utcp/code-mode

  2. Import CodeModeUtcpClient from @utcp/code-mode and initialize it with const client = await CodeModeUtcpClient.create().

  3. Register the MCP manual with await client.registerManual({ name: 'github', /* MCP config */ }), supplying the actual MCP configuration.

  4. Pass TypeScript code to client.callToolChain(...) and read the returned result.

Expected outcome

A Code-Mode client is initialized with a registered manual and can execute a TypeScript tool chain, returning its result.

Guide limitations

  • The example leaves the MCP configuration as a placeholder; a working server configuration must be supplied.
  • For MCP transport integration, the README separately documents installing and importing @utcp/mcp so the mcp call template registers.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
14 October 2026
Original website title
universal-tool-calling-protocol/code-mode · Official homepage title · retained in its source language
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