coding-agent-sync

coding-agent-sync

coding-agent-sync (cas) syncs instructions and skills across AI coding agents: Claude Code, GitHub Copilot (coding agent / agent mode), Codex, OpenCode, and Gemini CLI.

Background

Many people switch between AI coding agents, whether that is due to subscription/usage limits or using different tools for work vs personal projects. cas helps keep instructions and skills in sync across Claude Code, GitHub Copilot (coding agent / agent mode), Codex, OpenCode, and Gemini CLI so you can avoid manual copy/paste between agent-specific directories and keep your best setup available everywhere.

AI-assisted install and usage

If your coding agent supports skills, you can install the skill in this repo and let the agent handle setup and commands.

1. Add this skill to your current coding agent: skills/coding-agent-sync/SKILL.md.
2. Ask your agent to run setup and usage for you.
3. The skill is designed to ask for explicit consent before agent-run install steps.

Example prompt to your agent:

Use the coding-agent-sync skill to install cas and sync my instructions and skills from Claude to OpenCode. Ask me before installing anything.

If you prefer manual control, install from releases and then ask your agent to continue: https://github.com/LaneBirmingham/coding-agent-sync/releases

Manual install and usage

Usage commands

cas diff --from claude --to copilot,opencode --scope local
cas sync --from claude --to copilot,opencode --scope local
cas sync instructions --from claude --to opencode --scope local
cas sync skills --from claude --to copilot --scope local
cas export --from claude --scope local -o claude-local.zip
cas import --to copilot,opencode --scope local -i claude-local.zip
cas --help
cas sync --help

Install (one line)

Releases: https://github.com/LaneBirmingham/coding-agent-sync/releases

Supported prebuilt targets:

• darwin/arm64
• linux/amd64
• linux/arm64

Install the latest release:

curl -fsSL https://raw.githubusercontent.com/LaneBirmingham/coding-agent-sync/main/scripts/install.sh | bash

Install a specific version:

curl -fsSL https://raw.githubusercontent.com/LaneBirmingham/coding-agent-sync/main/scripts/install.sh | CAS_VERSION=v0.3.0 bash

Change install directory:

curl -fsSL https://raw.githubusercontent.com/LaneBirmingham/coding-agent-sync/main/scripts/install.sh | CAS_INSTALL_DIR=/usr/local/bin bash

Script location: scripts/install.sh

Install manually (source)

go install github.com/LaneBirmingham/coding-agent-sync@latest

What is currently built

• Stable releases are published from main.
• Current prebuilt artifact targets are darwin/arm64, linux/amd64, and linux/arm64.
• Artifact name: cas_<version>_<os>_<arch>.tar.gz
• Checksum file: SHA256SUMS
• Other platforms can install from source with go install.

Install and run locally

git clone https://github.com/LaneBirmingham/coding-agent-sync.git
cd coding-agent-sync
go run . --help

Build and run local binary:

go build -o cas .
./cas version

Local development

go test ./...
go build ./...
go vet ./...

Versioning

This project uses build-time version injection.

• cmd/version.go defaults to dev for local builds.
• Release builds inject the tagged version using -ldflags.

Example:

go build -ldflags "-X github.com/LaneBirmingham/coding-agent-sync/cmd.Version=1.2.3" ./...

CI and releases

See docs/release.md for workflow and release details.

• CI checks
• Conventional Commit enforcement
• release-please setup for main (stable)
• Binary release assets (darwin/arm64, linux/amd64, linux/arm64)

Contributing

PRs are welcome. For substantial changes, please open an issue first so we can align on scope.

See CONTRIBUTING.md for local validation steps and PR expectations.

AI-assisted development disclaimer

This repository is developed with assistance from AI coding tools. AI-generated suggestions may be used for code, tests, and documentation, but maintainers review, edit, and validate changes before release.

License

MIT. See LICENSE.