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Harness · forgecode.dev

soon

Forge.

An agentic coding harness from forgecode.dev — built around production engineering workflows: feature work, code review, refactors, and shipping the result. We're tracking Forge and plan to support it in TeamDay.

Visit forgecode.dev →All harnesses

What it is

Forge is an agentic coding harness from forgecode.dev, positioned around production engineering workflows. Where Claude Code emphasizes long-horizon autonomy and Codex emphasizes computer use, Forge is built around the day-to-day shape of an engineering team's work — feature branches, code review, refactors, and shipping.

Why we're tracking it

  • Production-shaped. The harness models the same units engineers already work in — features, branches, reviews — rather than a generic "solve this task" loop.
  • Provider-flexible. Like opencode, Forge is positioned to work with multiple model providers, which keeps the door open for future Claude / GPT / Gemini swaps without re-platforming.
  • Coding-first. Narrower scope than the general-purpose harnesses, which often translates to higher reliability on the actual coding cases.

Capabilities at a glance

  • Sub-agents: yes — three first-class agents: Forge (implement), Sage (research-only), Muse (planning), switchable via :agent.
  • Skills: yes — built-ins (create-skill, execute-plan, github-pr-description) plus .forge/skills/ markdown.
  • MCP servers: yes — managed via forge mcp CLI or .mcp.json; subprocess and HTTP/SSE.
  • Hooks: partial — event dispatch via -e/--event <JSON>; no full lifecycle hook config.
  • Slash commands: yes — custom commands in forge.yaml; native ZSH-style : prefix (:commit, :plan, :ask, :sage, :muse).
  • Permissions / sandboxing: partial — restricted shell mode; --sandbox creates an isolated git worktree+branch; no per-tool ACL.
  • Plugins: none — extensibility is via skills and custom agents only.
  • Multi-model: OpenAI, Anthropic, Vertex, Groq, Cerebras, OpenRouter, Bedrock, custom OpenAI-compatible.
  • Sessions: persistent by ID, forge conversation resume, :compact, :clone.
  • Surfaces: TUI (primary), ZSH plugin, CLI -p; no web, no IDE, no mobile.
  • Headless / SDK: partial — CLI and event dispatch yes, but no embeddable SDK.
  • License: Apache 2.0; github.com/antinomyhq/forge. Currently #1 on TermBench 2.0 (81.8%).

Status in TeamDay

Coming soon. Forge is on the roadmap. The live harnesses today are Claude Code, Codex, and Gemini CLI; other tracked options include opencode and Pi.

How it'll fit

When Forge lands, it'll appear as another option in the harness dropdown for any agent on the engineering side of your roster — the app builder, the security reviewer, the refactor agent. MCP server attachments and the rest of the agent surface stay the same.

Learn more