sl-mcp
MCP server for Sapling (sl) that gives LLMs structured access to Sapling repos with built-in safety guardrails.
README
sl-mcp
MCP server for Sapling (sl). Gives LLMs structured access to Sapling repos with built-in safety guardrails.
Prerequisites
- Sapling installed and on your PATH
- Node.js 18+
Install
Claude Code
claude mcp add --transport stdio sl -- npx -y sl-mcp
Restart Claude Code. Verify with /mcp — you should see the sl server listed.
Other MCP clients
Add to your MCP config file (.mcp.json, claude_desktop_config.json, etc.):
{
"mcpServers": {
"sl": {
"command": "npx",
"args": ["-y", "sl-mcp"]
}
}
}
Tools
22 tools across three tiers:
| Tier | Tools | Confirmation |
|---|---|---|
| Read | sl_status sl_diff sl_log sl_show sl_blame sl_cat sl_root sl_smartlog |
None |
| Write | sl_goto sl_commit sl_amend sl_rebase sl_shelve sl_unshelve sl_add sl_remove sl_forget sl_revert sl_undo |
Destructive ops warn LLM to confirm |
| Remote | sl_pull sl_push sl_pr_submit |
Always confirm with user |
Safety
- Force push to
main/masteris blocked server-side (not just a warning) - Destructive tools (rebase, revert, goto --clean) include confirmation guidance in tool descriptions
- Remote tools always instruct the LLM to confirm before executing
Configuration
| Env var | Default | Description |
|---|---|---|
SL_MCP_BINARY |
sl |
Path to Sapling binary |
SL_MCP_TIMEOUT |
30000 |
Command timeout in ms |
License
MIT
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