Koskamo

Grain SQL MCP

Grain is a local analytics tool that allows AI agents to run SQL queries and inspect database schemas via MCP. It keeps credentials and data on the user's machine, offering safe mode to prevent write operations by default, and supports integration with editors like VS Code and Cursor.

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Package and access

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

Grain SQL MCP logo, by PattrnlabsCommunity listingLocal stdioSource reviewed; not executedPublished by Pattrnlabs
Vendor documentation

Checks and signals

Each line is separate evidence, not a trust score.

  • Popularity 3 GitHub stars

What you can do with it

  • Run SQL queries against databases from an AI agent
  • Inspect database schemas safely
  • View exact SQL statements agents execute
  • Connect agents to databases without exposing passwords in chat

Source and maintenance

Community listingRegistry 0.10.45
mcp-registry: io.github.pattrnlabs/grain@0.10.45Source repositoryProject website
Last repository push
Latest release
v0.10.46
Maintenance checked

Packages and installation

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

grain-tools 0.10.45

npmnpx
grain-tools package definition
{
  "version": "0.10.45",
  "transport": "stdio",
  "identifier": "grain-tools",
  "runtimeHint": "npx",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org",
  "packageArguments": [
    {
      "name": "--stdio",
      "type": "named",
      "description": "Run Grain using stdio transport for local MCP clients."
    }
  ],
  "runtimeArguments": [
    {
      "type": "positional",
      "value": "-y"
    }
  ],
  "environmentVariables": [
    {
      "name": "GRAIN_CONNECTIONS",
      "format": "string",
      "description": "JSON array of Grain connection profiles for headless use."
    },
    {
      "name": "GRAIN_MCP_SAFE_MODE",
      "value": "true",
      "format": "boolean",
      "description": "Set to false to allow mutating SQL. Defaults to true."
    },
    {
      "name": "GRAIN_MAX_ROWS",
      "value": "10000",
      "format": "number",
      "description": "Maximum rows returned by query tools. Defaults to 10000."
    }
  ]
}

Tools

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

No tool definitions available.

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · repository · passed · metadata changed · updated
  • · backfill · recorded · Pre-expansion baseline; unobserved rich metadata remains unknown

Connect from your client

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

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "grain-sql-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "grain-tools@0.10.45"
      ],
      "env": {
        "GRAIN_CONNECTIONS": "<YOUR_GRAIN_CONNECTIONS>",
        "GRAIN_MCP_SAFE_MODE": "<YOUR_GRAIN_MCP_SAFE_MODE>",
        "GRAIN_MAX_ROWS": "<YOUR_GRAIN_MAX_ROWS>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "grain-sql-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "grain-tools@0.10.45"
      ],
      "env": {
        "GRAIN_CONNECTIONS": "<YOUR_GRAIN_CONNECTIONS>",
        "GRAIN_MCP_SAFE_MODE": "<YOUR_GRAIN_MCP_SAFE_MODE>",
        "GRAIN_MAX_ROWS": "<YOUR_GRAIN_MAX_ROWS>"
      }
    }
  }
}

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": {
    "grain-sql-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "grain-tools@0.10.45"
      ],
      "env": {
        "GRAIN_CONNECTIONS": "<YOUR_GRAIN_CONNECTIONS>",
        "GRAIN_MCP_SAFE_MODE": "<YOUR_GRAIN_MCP_SAFE_MODE>",
        "GRAIN_MAX_ROWS": "<YOUR_GRAIN_MAX_ROWS>"
      }
    }
  }
}

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": {
    "grain-sql-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "grain-tools@0.10.45"
      ],
      "env": {
        "GRAIN_CONNECTIONS": "<YOUR_GRAIN_CONNECTIONS>",
        "GRAIN_MCP_SAFE_MODE": "<YOUR_GRAIN_MCP_SAFE_MODE>",
        "GRAIN_MAX_ROWS": "<YOUR_GRAIN_MAX_ROWS>"
      }
    }
  }
}

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