# jacs-cli
Single binary for the JACS command-line interface and MCP server.
```bash
cargo install jacs-cli
```
This installs the `jacs` binary with CLI and MCP server built in.
## Quick Start
```bash
# Set a password for key encryption
export JACS_PRIVATE_KEY_PASSWORD='use-a-strong-password'
# Create an agent and start signing
jacs quickstart --name my-agent --domain my-agent.example.com
jacs document create -f mydata.json
# Start the MCP server (stdio transport)
jacs mcp
```
## Homebrew (macOS)
```bash
brew tap HumanAssisted/homebrew-jacs
brew install jacs
```
## From Source
```bash
git clone https://github.com/HumanAssisted/JACS
cd JACS
cargo install --path jacs-cli
```
## MCP Server
The MCP server is built into the binary. No separate install step needed.
```bash
jacs mcp
```
Configure in `.mcp.json` for Claude Code or similar clients:
```json
{
"mcpServers": {
"jacs": {
"command": "jacs",
"args": ["mcp"],
"env": {
"JACS_PRIVATE_KEY_PASSWORD": "your-password"
}
}
}
}
```
The MCP server uses stdio transport only (no HTTP) for security.
## Documentation
- [Full Documentation](https://humanassisted.github.io/JACS/)
- [Quick Start Guide](https://humanassisted.github.io/JACS/getting-started/quick-start.html)
- [CLI Command Reference](https://humanassisted.github.io/JACS/rust/cli.html)
- [MCP Integration](https://humanassisted.github.io/JACS/integrations/mcp.html)
- [JACS core library on crates.io](https://crates.io/crates/jacs)