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title, created, updated, type, tags, sources, confidence
| title | created | updated | type | tags | sources | confidence | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Forge AI | 2026-04-28 | 2026-04-28 | concept |
|
|
high |
Forge AI
Forge AI (ForgeCode) is a CLI-based AI coding harness — a competitor to Claude Code with first-class support for many AI providers. It works with cloud models, open-weight models, and local models.
Website: https://forgecode.dev
Agents
Forge provides three built-in agents:
| Agent | Access | Purpose |
|---|---|---|
| muse | read + write | Planning and analysis — reviews impact, plans changes |
| forge | read + write | Implementation — makes changes, fixes bugs (default) |
| sage | read | Research — used internally by muse/forge for codebase understanding |
Typical workflow: use muse to plan, switch to forge to implement.
Switch agents with :agent, :muse, :forge.
Custom Agents
Create agents as markdown files with YAML frontmatter in .forge/agents/ (project) or ~/forge/agents/ (global).
---
id: my-agent
title: My Agent
description: Brief description
tools: [read, search, shell]
model: claude-sonnet-4
provider: anthropic
temperature: 0.1
---
System prompt here.
Tools: read, write, patch, shell, search, fetch, remove, undo, or "*" for all.
Custom Commands
Repeatable workflows as slash commands in .forge/commands/:
---
name: check
description: Runs lint and tests before commit
---
Run `lint` and `test`, fix any issues found.
<lint>cargo clippy --fix</lint>
<test>cargo test</test>
Invoke with :check in the Forge chat.
MCP Integration
Connect external tools via .mcp.json:
{
"mcpServers": {
"browser": {
"command": "npx",
"args": ["@playwright/mcp@latest"]
}
}
}
Manage with forge mcp import, forge mcp list, forge mcp remove, forge mcp reload.
Environment Variables
| Variable | Default | Purpose |
|---|---|---|
FORGE_TERM |
on | Terminal context capture — passes command history to the model |
FORGE_TERM_MAX_COMMANDS |
5 | History buffer size |
FORGE_CONFIG |
~/forge/ |
Config directory (for dotfiles repos) |
FORGE_BIN |
forge |
Binary path (for local builds or version switching) |
$FORGE_TERM
On by default. The Zsh plugin tracks what commands you run, whether they succeeded, and passes that to ForgeCode on every : invocation. Means forge fix it already knows what failed — no need to narrate.
Disable per-session: export FORGE_TERM=false
Forge Services
Optional backend for enhanced capabilities: context engine (semantic search), tool-call guardrails, and skill engine. Enable with :login → select ForgeServices.
Index project with :sync, check status with :sync-status.
Setup
# 1. Install
curl -fsSL https://forgecode.dev/cli | sh
# 2. Zsh plugin
forge zsh setup
# 3. Login to provider
:login
# 4. Pick model
:model
# 5. First prompt
: Hi!
Requires: Nerd Font, Zsh.
Skills
ForgeCode skills are markdown files (.forge/skills/) that provide reusable workflows. Similar to custom commands but more powerful — skills can use templating and conditional logic.
Configuration Files
| File | Purpose |
|---|---|
.forge.toml |
Main config ( ForgeConfig dir) |
.mcp.json |
MCP server definitions |
.forge/agents/ |
Custom agent definitions |
.forge/commands/ |
Custom slash commands |
.forge/skills/ |
Reusable skill workflows |
AGENTS.md |
Project-wide rules for all agents |
Related
- opencode-cluster — OpenCode cluster setup in this homelab
- ai-applications — AI application stack on ubuntu
- hermes-gateway — Hermes gateway used for model routing