| name | lean-explore-mcp |
| description | Use when preparing optional LeanExplore MCP setup for Lean declaration search and formalization support. |
LeanExplore MCP Setup
Windows Runtime Commands
On native Windows, use the managed Windows runner and the native runtime command target. Set $runtime to the installed runtime root. Multi-agent installs usually use %LOCALAPPDATA%\ai-agents-skills\runtime. Then run:
$runtime = if ($env:AAS_RUNTIME_ROOT) { $env:AAS_RUNTIME_ROOT } else { "$env:LOCALAPPDATA\ai-agents-skills\runtime" }
& "$runtime\run_skill.ps1" "skills/lean-explore-mcp/run_lean_explore_mcp.ps1" doctor
PowerShell runner target:
& "$runtime\run_skill.ps1" "skills/lean-explore-mcp/run_lean_explore_mcp.ps1" doctor
POSIX examples below use run_skill.sh and .sh command targets; use the Windows command target above on native Windows.
Use this skill only for explicit optional LeanExplore MCP setup. It never installs packages, writes MCP/client config, stores credentials, downloads local data, or calls LeanExplore services during doctor, config, or smoke. On POSIX, its explicit serve command can start the reviewed in-process adapter for exactly lean-explore==1.2.1.
Runtime Helper
Check local readiness without running lean-explore:
bash "${AAS_RUNTIME_ROOT:-$HOME/.local/share/ai-agents-skills/runtime}/run_skill.sh" \
skills/lean-explore-mcp/run_lean_explore_mcp.sh doctor
Emit a manual MCP config snippet:
bash "${AAS_RUNTIME_ROOT:-$HOME/.local/share/ai-agents-skills/runtime}/run_skill.sh" \
skills/lean-explore-mcp/run_lean_explore_mcp.sh config-snippet --backend api
Use --backend local only after local data has been prepared outside this repo with LeanExplore's own tooling.
Run offline smoke:
bash "${AAS_RUNTIME_ROOT:-$HOME/.local/share/ai-agents-skills/runtime}/run_skill.sh" \
skills/lean-explore-mcp/run_lean_explore_mcp.sh smoke
The emitted local stdio snippet uses the absolute managed run_lean_explore_mcp.sh wrapper with args ["serve", "--backend", "api"] or ["serve", "--backend", "local"]. Set AAS_LEANEXPLORE_SITE_PACKAGES to an absolute, owner-protected site-packages directory containing exactly lean-explore==1.2.1. API mode also uses the placeholder LEANEXPLORE_API_KEY; local mode assumes a user-managed LeanExplore cache such as ~/.lean_explore/cache/.
Never add --api-key or --api-key=<value> to the MCP command: process
arguments are observable outside the child. The managed POSIX wrapper captures
and removes LEANEXPLORE_API_KEY before helper/interpreter discovery and moves
it to a private inherited descriptor. The Python adapter consumes and closes
that descriptor before importing LeanExplore. It instantiates the 1.2.1 API
client and FastMCP app in-process; it never invokes the broken upstream CLI
bridge. Native Windows serve fails explicitly because private-descriptor
credential transport is not implemented there. Doctor, smoke, and placeholder
config generation remain available on Windows.
Research Evidence Policy
LeanExplore output is Lean declaration retrieval evidence. Record it as lean_declaration_search, never as formal_check. It cannot set local lean_check_status, satisfy placeholder or trust-base scans, replace statement-equivalence review, or promote formal support without local Lean/project evidence.
Recommended templates
When this skill is involved, consider these workflow templates (install via
the workflow-templates artifact profile, or --with-deps to pull backing skills):
informal-to-lean-formalization-runbook -- Local-first intake mapping an informal proof to Lean declarations with a scanner-first verification gate separating typecheck status from claim support.
