a continuous-improvement harness for long-running agent tasks. Turns Claude Code, Codex, or Hermes into a multi-agent mission orchestrator via MCP/ACP.

Zenith is an agent harness for work that may run for days or weeks, where the dominant failure mode is premature completion rather than inability to make progress. It runs a coding agent (Claude Code, Codex, or Hermes) as a multi-agent orchestrator over MCP/ACP: one orchestrator session reads task state each turn and decides whether to spawn workers and testers, register reusable skills, replan, or stop.

The Agent Client Protocol (ACP) standardizes communication between code editors/IDEs and coding agents and is suitable for both local and remote scenarios.

Related contents:

• ACP vs MCP: What's the difference for agentic coding? @ circleci Blog.

AI You Control. The Open-Source, Cross-Platform, Extensible AI Client. Choose your models. Own your data. Eliminate vendor lock-in.

• Thunderbolt @ GitHub.

Related contents:

• Mozilla Introduces Thunderbolt: An Enterprise AI Client Built for Control and Independence @ Thunderbolt.
• Mozilla throws Thunderbolt at enterprise AI providers @ The Register.
• Mozilla lance Thunderbolt, un client IA open source pensé pour l'entreprise @ Korben :fr:.

a coding agent you can leave running.

DeepSeek-native AI coding agent for your terminal. Engineered around prefix-cache stability — leave it running.

One local engine, four ways in — terminal, desktop app, browser, or your editor over ACP. Plan mode, permissions, a workspace sandbox and per-turn checkpoints keep a long autonomous run something you can still read and undo.

• Reasonix @ GitHub.

The Open Platform for Cloud Coding Agents.

The self-hosted developer control center for coding agents and automations.

Run OpenHands, Claude Code, Codex, Gemini, or any ACP-compatible agent across local, remote, and cloud backends.

• OpenHands @ GitHub.