Server data from the Official MCP Registry
Validate, lint, test-run and explain Open Lakehouse Contracts with LakeLogic, from any AI assistant.
About
Validate, lint, test-run and explain Open Lakehouse Contracts with LakeLogic, from any AI assistant.
Security Report
lakelogic-mcp is a local stdio server for validating, linting, and running Open Lakehouse Contracts. Its file access is confined to the project root by resolving paths and checking containment, and it has no network calls, shell execution, or hardcoded secrets. Remaining findings are low-severity: broad exception handling, directory creation before output validation, and loosely pinned dependencies. Supply chain analysis found 5 known vulnerabilities in dependencies (0 critical, 5 high severity). Package verification found 1 issue.
7 files analyzed · 11 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-lakelogic-lakelogic-mcp": {
"args": [
"lakelogic-mcp"
],
"command": "uvx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
lakelogic-mcp
mcp-name: io.github.LakeLogic/lakelogic-mcp
A local MCP server that lets AI assistants (Claude Code, Claude Desktop, Cursor and any MCP client) check the Open Lakehouse Contracts (OLC) they write, using LakeLogic itself instead of guessing.
- Runs on your machine over stdio. No network, no account, no telemetry.
- Never touches a platform. Two tools act locally:
generate_test_datawrites a data file andrun_contractruns a contract on it with Polars or DuckDB. Nothing is written to a contract's target. - Reads and writes only inside the project folder it was started in.
Tools
| Tool | Answers |
|---|---|
validate_contract | Is this a legal OLC contract? Each error's location and problem |
lint_contract | Is it a good one? Governance findings from lakelogic lint, each with its fix |
explain_rule | Why does a lint rule exist? What it checks, why it matters, a failing and a fixed contract |
contract_reference | How is one part of a contract written? (anatomy, quality, materialization, …) |
export_odcs | The contract as an Open Data Contract Standard document |
generate_test_data | Synthetic data shaped by the contract, with a share of rows that deliberately break its rules |
run_contract | How many rows pass, how many are quarantined, and why (Polars or DuckDB, local only) |
Install
Claude Code (plugin):
/plugin marketplace add LakeLogic/lakelogic-mcp
/plugin install lakelogic-mcp@lakelogic-mcp
or directly: claude mcp add lakelogic -- uvx lakelogic-mcp
Cursor: Add to Cursor
Any other MCP client (VS Code, Claude Desktop, ...): run uvx lakelogic-mcp as a stdio server.
It is also listed in the official MCP Registry as
io.github.LakeLogic/lakelogic-mcp.
All of them need uv on your PATH.
Try it locally (development checkout)
cd C:\_Personal\_SaaS\lakelogic-mcp
uv venv .venv
uv pip install --python .venv\Scripts\python.exe "mcp>=1.2" pytest -e ..\open-lakehouse-contract -e ..\lakelogic
uv pip install --python .venv\Scripts\python.exe --no-deps -e .
.venv\Scripts\python.exe -m pytest
Register it with Claude Code
From the project whose contracts you want checked:
claude mcp add lakelogic -- C:\_Personal\_SaaS\lakelogic-mcp\.venv\Scripts\lakelogic-mcp.exe
Then ask, for example:
- "Lint the contracts in this folder and fix what you find."
- "Why is KEY-002 flagged on silver_trips.yaml?"
- "Write a silver contract for orders and check it before you show me."
Claude Desktop / Cursor
Add to the client's MCP settings (claude_desktop_config.json, or Cursor's mcp.json):
{
"mcpServers": {
"lakelogic": {
"command": "C:\\_Personal\\_SaaS\\lakelogic-mcp\\.venv\\Scripts\\lakelogic-mcp.exe",
"args": ["--root", "C:\\path\\to\\your\\contracts\\project"]
}
}
}
Once published
uvx lakelogic-mcp # Claude Code: claude mcp add lakelogic -- uvx lakelogic-mcp
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