harness

About harness

@mastersof-ai/harness An agent runtime where you control the entire system prompt. Write a markdown file, get an agent -- no hidden framework instructions, no magic behavior injection, no black box. Use the terminal TUI for local development. Switch to for a web UI that your team accesses from a browser. Both run the same agent runtime, tools, and configuration underneath. Why This Exists Most agent frameworks inject their own system prompt that you can't see or override. Your carefully crafted instructions compete with hidden framework behavior. You're debugging a black box.

a2a-protocol agent-runtime agent-sdk ai-agent claude llm mcp multi-agent tui typescript

Quick Facts

Stars	28
Forks	4
Language	TypeScript
Category	MCP Server
License	MIT
Quality Score	73.9202889489829/100
Last Updated	2026-03-19
Created	2026-02-26
Platforms	browser, claude-code, mcp, node
Est. Tokens	~73k

Compatible Skills

These tools work well together with harness for enhanced workflows:

claude-agent-sdk-skill-autoupdated — semantic(0.37)+complementary+same_lang+similar_pop+shared_platform (58%)
claudecode-discord — semantic(0.24)+complementary+rare_topics+same_lang+similar_pop+shared_platform (58%)
goodable — semantic(0.29)+complementary+same_lang+similar_pop+shared_platform (55%)

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Frequently Asked Questions

What is harness?

harness is Agent runtime with full system prompt control. Define agents in markdown, run them in a terminal TUI or multi-user web UI. Powered by the Claude Agent SDK.. It is categorized as a MCP Server with 28 GitHub stars.

What programming language is harness written in?

harness is primarily written in TypeScript. It covers topics such as a2a-protocol, agent-runtime, agent-sdk.

How do I install or use harness?

You can find installation instructions and usage details in the harness GitHub repository at github.com/mastersof-ai/harness. The project has 28 stars and 4 forks, indicating an active community.

What license does harness use?

harness is released under the MIT license, making it free to use and modify according to the license terms.

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