AI AGENTS
harnext
by QualityUnit
Overview
Terminal-native AI coding agent harness for reading and editing files, running shell commands, driving MCP servers, and automating coding tasks.
Details
harnext is described by its official site and documentation as a terminal-native AI coding agent harness that reads, edits, runs shell/MCP, supports one-shot automation, and can ship work unattended. The GitHub README describes it as an interactive terminal agent that can read, write, and edit files, run shell commands, drive MCP servers, and pick up GitHub issues through generated GitHub Actions workflows. The quickstart covers creating a Harnext client, running an agent task, streaming tool activity live, resuming saved sessions, and invoking the same task from the CLI.
When to Use
Use harnext when you want a terminal-native coding agent that can read write and edit files and run shell commands. Use it to experiment with MCP-enabled coding workflows from an interactive terminal agent harness. Use it for one-shot automation or unattended coding-agent workflows where the project documentation’s supported behavior matches your needs. Evaluate it for workflows that pick up GitHub issues through generated GitHub Actions workflows.
Getting Started
- Visit the project site at https://www.harnext.dev/ for the overview.
- Read the documentation at https://www.harnext.dev/docs and the quickstart at https://www.harnext.dev/docs/quickstart.
- Review the GitHub repository and README at https://github.com/QualityUnit/harnext before using it in a codebase.
- Follow the quickstart to create a Harnext client
- run an agent task
- stream tool activity
- resume saved sessions
- or invoke the task from the CLI.
Key Features
- •Terminal-native AI coding agent harness
- •Reads
- •writes
- •and edits files
- •Runs shell commands
- •Drives MCP servers
- •Supports one-shot automation and unattended work
- •Can pick up GitHub issues through generated GitHub Actions workflows
- •Quickstart documents run
- •stream
- •saved-session resume
- •and CLI invocation flows
- •SDK overview defines Harnext
- •RunResult
- •Session
- •tool()
- •Harness
- •and Runner concepts
Capabilities
- •code reading
- •file writing
- •code editing
- •shell command execution
- •MCP server integration
- •agent task execution
- •live tool-activity streaming
- •saved session resume
- •CLI task invocation
- •GitHub Actions workflow generation for GitHub issues
Last updated Jun 12, 2026