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code-mode

TypeScript library that lets agents call MCP and UTCP tools by running model-written code in a sandbox.

Harness by universal-tool-calling-protocol

IndexedMPL-2.0★ 1,611
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Install

From the package registry. Read the repository before you give any tool access to your data.

npm install @utcp/code-mode

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About

Code-Mode gives an agent one tool that executes TypeScript code, and that code can call many registered MCP or UTCP tools in a single request. It provides progressive tool discovery, auto-generated TypeScript interfaces for tools, and a Node.js VM sandbox with execution timeouts and captured console output. Tools are reached only through the registered UTCP or MCP servers.

Use cases: api-integration, code-generation

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Fact sheet

Languages
TypeScriptREADME
Packages
@utcp/code-mode (npm)README
MCP support
Built inREADME
Maturity
Stablegithub.com

Facts extracted by Claude Haiku 5.5 from the linked sources on Oct 24, 2026. Wrong fact? Tell us.

Alternatives

Frameworks for the same language with a similar way of orchestrating agents.

Signals

Stars
1,611
Forks
110
Open issues
5
Last commit
Aug 25, 2026 (2 months ago)
Last release
Nov 23, 2025 (11 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Packages
npm @utcp/code-mode
License
MPL-2.0
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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Cite this page

code-mode. Agent Mart. https://agentmart.dev/harnesses/code-mode (last updated 2026-10-24)