Harnesses

The container includes /home/user/src/AGENTS.md with information about preinstalled tools.

Supported agents

Agent	Instruction file	Host config mounted automatically
amp	~/.config/amp/AGENTS.md	Yes
claude	~/.claude/CLAUDE.md	Yes
codex	~/.codex/AGENTS.md	Yes
kilo	~/.kilocode/rules/*.md	Yes
opencode	~/.config/opencode/AGENTS.md	Yes
pi	~/.pi/agent/AGENTS.md	Yes
qwen	~/.qwen/QWEN.md	Yes
goose	~/.config/goose/AGENTS.md	Yes
kimi	~/.kimi/KIMI.md	Yes

Antigravity is also available in specialized images through agy. md shares its host Gemini state at ~/.gemini, which can contain credentials. This state is writable and shared with other applicable tasks. Antigravity integration in caic is experimental.

Sharing the same AGENTS.md across harnesses

By default, each harness looks for its own config file (e.g. ~/.claude/CLAUDE.md, ~/.pi/agent/AGENTS.md). If you'd prefer a single AGENTS.md shared across all your agents, symlinks make this easy:

mkdir -p ~/.agents ~/.config/amp ~/.claude ~/.codex ~/.config/goose \
         ~/.kimi ~/.kilocode/rules ~/.config/opencode ~/.pi/agent ~/.qwen

echo "Read ~/AGENTS.md if present." >> ~/.agents/AGENTS.md
ln -s ../../.agents/AGENTS.md ~/.config/amp/AGENTS.md
ln -s ../.agents/AGENTS.md    ~/.claude/CLAUDE.md
ln -s ../.agents/AGENTS.md    ~/.codex/AGENTS.md
ln -s ../../.agents/AGENTS.md ~/.config/goose/AGENTS.md
ln -s ../.agents/AGENTS.md    ~/.kimi/KIMI.md
ln -s ../../.agents/AGENTS.md ~/.kilocode/rules/AGENTS.md
ln -s ../../.agents/AGENTS.md ~/.config/opencode/AGENTS.md
ln -s ../../.agents/AGENTS.md ~/.pi/agent/AGENTS.md
ln -s ../.agents/AGENTS.md    ~/.qwen/AGENTS.md

You can skip any harness you don't use. Each agent works fine with its own config file too: nothing requires symlinks.

Sharing skills across harnesses

If you use multiple agents, you can share the same skills directory rather than copying skills into each harness's location:

mkdir -p ~/.agents/skills ~/.claude ~/.codex ~/.config/goose \
         ~/.kimi ~/.kilocode ~/.config/opencode ~/.pi/agent ~/.qwen

ln -s ../.agents/skills/                 ~/.claude/skills
ln -s ../.agents/skills/                 ~/.codex/skills
ln -s ../../.agents/skills/              ~/.config/goose/skills
ln -s ../.agents/skills/                 ~/.kimi/skills
ln -s ../.agents/skills/                 ~/.kilocode/skills

Again, none of this is required. Each harness looks in its own directory by default.

Skills locations by harness:

Agent	Skills path
amp	~/.agents/skills/**/SKILL.md
claude	~/.claude/skills/<name>/SKILL.md
codex	~/.codex/skills/**/SKILL.md
kilo	~/.kilocode/skills/<name>/SKILL.md
opencode	~/.config/opencode/skill/<name>/SKILL.md
pi	~/.pi/agent/skills/**/SKILL.md
qwen	~/.qwen/skills/<name>/SKILL.md
goose	~/.config/goose/skills/**/SKILL.md
kimi	~/.kimi/skills/<name>/SKILL.md