setting up leantool in roo-code

Stream: Machine Learning for Theorem Proving

[Jared green]

is there a way to set up LeanTool in roo-code?

[Jared green]

where do i set the api key in the last step, and how do i get the base url to provide to roo-code?

[GasStationManager]

After installing and opening roo-code, there's a page "welcome to roo-code...", then "Express setup throgh a router"; scroll further down, look under "Bring your own API key", then in the list of providers select "OpenAI Compatible", then it will let you input the base url and your API key.

[Jared green]

i already installed roo-code. how do i get to that page?

[GasStationManager]

Click on the kangaroo on the left pane to open the roo pane. If that page doesn't appear, try the settings icon on the top of the roo pane.

[Jared green]

i got an api key from anthropic. what do i put in the other fields? my copy of LeanTool is at
C:\\Users\\jared\\AppData\\Roaming\\Roo-Code\\MCP\\LeanTool

[GasStationManager]

For roo code, LeanTool can be deployed two ways, as API proxy server or as MCP. If going with the proxy server route, the easiest would be to first try the demo server by following https://github.com/GasStationManager/LeanTool?tab=readme-ov-file#api-server-demo

[Jared green]

what do i do to run it as mcp? the site doesnt tell me.

[GasStationManager]

First set up your LLM normally in roo code; e.g. anthropic with your API key.
Then, set up leantool MCP server. For a quick start, you can use the demo/testing server at http://www.codeproofarena.com:8008/sse
(so no set up required at this step).
Then, set up roo code's connection to the MCP server. See https://docs.roocode.com/features/mcp/using-mcp-in-roo under "SSE". Basically fill in the server address in the config file provided, e.g.

{
  "mcpServers": {
    "remote-server": {
      "url": "http://www.codeproofarena.com:8008/sse"
    }
  }
}

[Jared green]

what about a local mcp server connecting to a remote model

[GasStationManager]

Local MCP server: First install and set up LeanTool by following the steps at https://github.com/GasStationManager/LeanTool?tab=readme-ov-file#installation
(except the last step; you'll set up the LLM in roo code)
Then, to deploy the MCP server in SSE mode, run in the command line poetry run python leanmcp.py --sse --port 8008 and then put the URL http://localhost:8008/sse in roo code's mcp configuration, e.g.

{
  "mcpServers": {
    "remote-server": {
      "url": "http://localhost:8008/sse"
    }
  }
}

[Jared green]

what would that line be if poetry was installed via pip?

[Jared green]

and do i have to do that every time i turn on my computer?

[GasStationManager]

Jared green said:

what would that line be if poetry was installed via pip?

I'm not too familiar with that myself. Going by the poetry documentation at https://python-poetry.org/docs/#installing-manually
if you installed poetry via pip into a venv as the doc suggested, then you can invoke poetry by $VENV_PATH/bin/poetry where $VENV_PATH is where you put the venv at.

[Jared green]

apparently just cd <path-to-leantool>; python -m poetry run python leanmcp.py --sse --port 8008
however im getting
PS C:\Users\jared\AppData\Roaming\Roo-Code\MCP\LeanTool> python -m poetry run python leanmcp.py --sse --port 8008
Traceback (most recent call last):
File "C:\Users\jared\AppData\Roaming\Roo-Code\MCP\LeanTool\leanmcp.py", line 1, in <module>
from mcp.server.fastmcp import FastMCP
ModuleNotFoundError: No module named 'mcp'

[GasStationManager]

poetry is the package manager that LeanTool uses to install its python dependencies. So in the LeanTool installation instructions https://github.com/GasStationManager/LeanTool?tab=readme-ov-file#installation
one of the steps is to do poetry install in the LeanTool directory. (This would read the config file pyproject.toml which tells poetry to install the mcp library among others.)
Did you go through those installation steps?

[Jared green]

yes

[Jared green]

the list of things it installed does not have mcp

[Jared green]

is the fact it didnt install mcp a windows only thing? i tried installing it separately but that didnt work.(i dont know the line for getting it in the same environment)

[GasStationManager]

I think the recommended way of installing poetry is to install poetry as a standalone, see https://python-poetry.org/docs/#installing-with-the-official-installer under "Windows (PowerShell)"
Then run poetry install in the LeanTool repo directory.
If sucessful, the mcp library and others will be installed in the virtual env created by poetry for this project. You can see it by e.g.
poetry run pip list

[泡泡]

I'm encountering a problem while using Lean4 in combination with VS Code for theorem proving, and I'm now seeking help from everyone.

During the operation, I wrote Lean4 code following the regular steps and attempted to conduct theorem proving. However, the expected green checkmark symbol didn't appear, which means there was no feedback on the execution result. I have confirmed that the Lean4 extension in VS Code has been correctly installed, and all relevant dependencies have also been set up properly.

I have tried restarting VS Code, and even reinstalling the Lean4 extension and the related environment, but the problem still persists. Currently, I'm not sure whether there is a logical error in the code or there are some omissions in the environment configuration.

[Patrick Massot]

Please do not double post, especially in completely unrelated topics.

[Jared green]

from part of that list:
jsonschema-specifications 2025.4.1
markdown-it-py 3.0.0
MarkupSafe 3.0.2
mdurl 0.1.2
multidict 6.4.3
narwhals 1.37.1
numpy 2.2.5
packaging 24.2

apparently it also fails to install openai not sure what if anything i should do about that.

[GasStationManager]

That does sound like poetry install failed partway through. Try
poetry install in the LeanTool directory again; what errors does it give?

[Jared green]

- Installing openai (1.75.0): Failed

FileNotFoundError

[Errno 2] No such file or directory: 'C:\\Users\\jared\\AppData\\Local\\Packages\\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\\LocalCache\\Local\\pypoetry\\Cache\\virtualenvs\\leantool-rAtt-6DR-py3.10\\Lib\\site-packages\\openai\\types\\beta\\realtime\\conversation_item_input_audio_transcription_completed_event.py'

at C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.10_3.10.3056.0_x64__qbz5n2kfra8p0\lib\pathlib.py:1119 in open
1115│ the built-in open() function does.
1116│ """
1117│ if "b" not in mode:
1118│ encoding = io.text_encoding(encoding)
→ 1119│ return self._accessor.open(self, mode, buffering, encoding, errors,
1120│ newline)
1121│
1122│ def read_bytes(self):
1123│ """

Cannot install openai.

[Jared green]

meanwhile i tried installing mcp separately before this and it still fails to find it.

[Jared green]

its currently on the commit from 5 days ago and everything else updated on saturday.

[GasStationManager]

I am not familiar with that error message. My best guess is that something strange has happened to the installation that it is best to start over. So,

• install poetry as a standalone. E.g. open PowerShell and follow the instruction from https://python-poetry.org/docs/#installing-with-the-official-installer under "Windows (PowerShell)"
• git clone the LeanTool repository and follow the installation steps from https://github.com/GasStationManager/LeanTool?tab=readme-ov-file#installation
• One issue that you might run into, which is possibly related to the errors you were encountering, is that one of our dependencies Pantograph has just switched to using uv as package manager in the latest version (0.3.1). I will need to figure out what need to be changed in our installation procedure to adapt to that; but meanwhile you could skip the Pantograph installation by removing the line corresponding to Pantograph in pyproject.toml of the LeanTool repo before running poetry install.

[Jared green]

it does not appear to be anything wrong with the installation process. i dont know why, but it just seems to be unable to install openai, and doesnt even try to install mcp.

[Jared green]

are there any technical limits on using the demo url provided?