Koskamo

SpecLeft MCP

SpecLeft is an offline-first, open-source Python framework that maps behavioral specifications to pytest tests. It enables agents and engineers to define feature intent in Markdown, generate test skeletons, and track implementation coverage to prevent AI-driven code drift. It runs locally with zero telemetry, ensuring deterministic behavior verification without external API dependencies.

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Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

SpecLeft MCP logo, by SpecLeftCommunity listingLocal stdioSource reviewed; not executedPublished by SpecLeft
You need:pip install specleft
Vendor documentation

What you can do with it

  • Map behavioral specs to pytest tests
  • Monitor implementation progress and coverage
  • Surface missing behavior before production
  • Detect drift between spec and code

Source and maintenance

Community listingRegistry 0.4.0
mcp-registry: io.github.SpecLeft/specleft@0.4.0Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

specleft 0.4.0

pypiuvx
specleft package definition
{
  "version": "0.4.0",
  "transport": "stdio",
  "identifier": "specleft",
  "runtimeHint": "uvx",
  "registryType": "pypi",
  "registryBaseUrl": "https://pypi.org",
  "packageArguments": [
    {
      "type": "positional",
      "value": "mcp"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "specleft-mcp": {
      "command": "uvx",
      "args": [
        "specleft==0.4.0",
        "mcp"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "specleft-mcp": {
      "command": "uvx",
      "args": [
        "specleft==0.4.0",
        "mcp"
      ]
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "specleft-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "specleft==0.4.0",
        "mcp"
      ]
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "specleft-mcp": {
      "command": "uvx",
      "args": [
        "specleft==0.4.0",
        "mcp"
      ]
    }
  }
}

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