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
Install
From the package registry. Read the repository before you give any tool access to your data.
npm install @utcp/code-mode
Get the weekly diff
The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.
About
Use cases: api-integration, code-generation
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
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.
- 0.867score
Pi Agent Core
Earendil
Minimal TypeScript agent harness with an agent runtime, multi-provider LLM API, terminal UI and coding agent CLI that users extend themselves.
HarnessAFreshness: A★ 117.6K↓ 5.1M/wk - 0.831score
CopilotKit
CopilotKit
Open-source SDK that connects AI agents to app front ends with chat UI, generative UI, shared state and human approvals; creator of the AG-UI protocol.
HarnessAFreshness: A★ 38.2K↓ 286.2K/wk - 0.740score
Deep Agents
LangChain
Opinionated agent harness on LangGraph with sub-agents, filesystem access, context management, persistent memory and approval of tool calls.
HarnessAFreshness: A★ 30.6K↓ 1.9M/wk - 0.737score
Mastra
Mastra
TypeScript framework for AI agents and apps with graph-based workflows, memory, suspend-and-resume approvals, MCP servers and model routing.
HarnessAFreshness: A★ 29.1K↓ 1.4M/wk - 0.727score
Vercel AI SDK
Vercel
TypeScript toolkit for AI apps and agents with a unified provider API, streaming, UI hooks and a wrapper for running established agent harnesses.
HarnessAFreshness: A★ 27.5K
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
- Source
- READMEgithub-graphql
More from universal-tool-calling-protocol
- 0.655score
python-utcp
universal-tool-calling-protocol
Official Python implementation of the Universal Tool Calling Protocol, calling HTTP, CLI, MCP and text-file tools through plugins.
HarnessBFreshness: B★ 653↓ 1.9K/wk - 0.404score
CLAUDE.md · universal-tool-calling-protocol/python-utcp
universal-tool-calling-protocol
CLAUDE.md from universal-tool-calling-protocol/python-utcp: 113 lines covering Project Overview, Development Commands, Architecture Overview, Configuration…
TemplateFFreshness: F★ 653Claude Code
Cite this page
code-mode. Agent Mart. https://agentmart.dev/harnesses/code-mode (last updated 2026-10-24)