using-labby

name

using-labby

description

This skill should be used when the user mentions labby, the labby CLI, the Lab gateway, or any Lab operator surface. Triggers include: "run labby doctor", "check labby health", "start the labby MCP server", "configure ~/.lab/.env", "search upstream MCP tools with Code Mode", "use labby gateway to import servers", "manage the Labby marketplace", "reload the gateway", or any request to run labby CLI commands, inspect gateway upstreams, or dispatch an action against a Lab service.

Using the labby CLI

labby is the Lab binary. Treat generated help and docs/ as source of truth when this skill and the repo disagree.

Quick Start

labby help                 # CLI command help
labby doctor               # Full health/config audit
labby health               # Quick availability check
labby --json doctor        # Machine-readable output
labby completions bash     # Generate shell completions

Use labby, not the old lab command name.

labby help is Clap command help in the current CLI. For service/action catalogs, read docs/generated/service-catalog.md, docs/generated/action-catalog.md, or use service help/schema actions through MCP/API dispatch.

Top-Level Surfaces

Command	Purpose
labby mcp	Start the MCP server over stdio
labby serve	Start the HTTP/API server
labby doctor	Audit config, auth, and runtime health
labby health	Quick availability check
labby setup	First-run/setup and plugin install flows
labby setup install-plugin <name>	Install a Lab plugin
labby gateway ...	Manage proxied upstream MCP gateways
labby marketplace ...	Manage marketplace/plugin metadata
labby registry ...	MCP Registry install/search when enabled
labby gateway discover	Scan local MCP client configs for upstream servers
labby gateway import [-y]	Import discovered MCP servers into the gateway
labby logs ...	Search/tail Lab logs
labby stash ...	Component versioning/deployment metadata

Use only current top-level commands from labby --help. Prefer setup, gateway, marketplace, or registry for operator workflows.

For command details and workflows, read:

• references/operator-cli.md for top-level CLI, setup, docs, doctor, logs, deploy, and marketplace workflows.
• references/gateway-operations.md for gateway add/update/import/OAuth/protected routes/runtime operations.
• references/code-mode.md for search/execute, schemas, confirmations, limits, and error recovery.
• references/config-reference.md for ~/.lab/.env, config.toml, and mutable gateway settings.
• references/service-catalog.md for generated catalog sources and action-dispatch discovery.

CLI vs MCP

The MCP surface exposes one tool per runtime service with flat action strings:

{ "action": "help" }
{ "action": "schema", "params": { "action": "gateway.reload" } }
{ "action": "gateway.servers", "params": {} }
{ "action": "gateway.schema", "params": { "name": "github" } }

For direct MCP stdio use, run labby mcp. For browser/API/admin workflows, run labby serve.

Code Mode Gotchas

Labby exposes the public Code Mode tools as search and execute. Use search first to inspect live upstream tool IDs, schemas, output schemas, TypeScript signatures, and codemode.* helper names. Do not guess parameter names from memory or older examples.

If another skill instructs you to call a tool you don't see in your tool list (e.g. mcp__lab__<service> or mcp__<server>__<tool>), that capability is almost certainly an upstream behind this gateway — not a missing tool. Translate the instruction: search for the tool, then execute it. Never conclude a capability is unavailable without searching first.

Use execute with JavaScript that evaluates to an async function:

async () => {
  const result = await callTool("github::search_issues", { q: "bug" });
  return result.items?.length ?? 0;
}

Prefer callTool("<upstream>::<tool>", params) when dynamically selecting tools. Use codemode.<upstream>.<tool>(params) only after search confirms the helper name.

Many upstreams are action-dispatched — one tool taking { action, params } (e.g. axon, and the rmcp family: unraid, sonarr, cortex, ...). Put operation arguments under params, and discover actions with { "action": "help" } or the search schema. Guessing top-level fields rejects as invalid_param (params must match exactly one schema). See references/code-mode.md for the full pattern.

Destructive upstream tools require top-level confirmation on the Labby execute call:

{ "code": "async () => { ... }", "upstreams": ["agent-os_windows-mcp"], "confirm": true }

Do not put confirm inside upstream tool params, and do not try allow_destructive_actions; that is an internal flag surfaced by older error text, not the public MCP execute parameter. Scopes such as lab or lab:admin authorize execution but do not confirm destructive effects. If a call returns confirmation_required, retry the same top-level Labby execute call with "confirm": true.

Use upstreams or tools allowlists to narrow risky executions:

{
  "code": "async () => { return await codemode.agent_os_windows_mcp.Wait({ duration: 2 }); }",
  "upstreams": ["agent-os_windows-mcp"],
  "max_tool_calls": 3
}

max_tool_calls is a top-level execute budget override clamped by gateway config. It is not an upstream tool param.

For Wait, use the live schema field:

await codemode.agent_os_windows_mcp.Wait({ duration: 2 });

Do not use { seconds: ... } unless the current search result explicitly shows that field.

For deeper Code Mode details, read references/code-mode.md.

Configuration

Config lives in ~/.lab/.env and config.toml using Lab's documented load order. Common env keys:

LAB_MCP_HTTP_TOKEN=...
LAB_GW_<NAME>_AUTH_HEADER=Bearer ...

Labby-owned config is operator/gateway config. Use generated env docs and gateway service-config actions for current fields.

Dev Commands

Inside the Lab repo, default verification is all-features:

just check
just test
just lint
just build
just run -- help

If you run a narrow command for speed, treat the result as provisional until the all-features path is checked.

Troubleshooting

• Check current commands with labby --help or labby <command> --help.
• Use labby doctor --json when you need structured evidence.
• For MCP stdio problems, verify labby mcp; for HTTP/browser problems, verify labby serve.
• For stale docs, refresh generated docs before editing hand-written guidance.