swen128/cloud-logging-mcp

Google Cloud Logging MCP Server

A Model Context Protocol (MCP) server that provides access to Google Cloud Logging. This server allows AI assistants to query, search, and analyze logs from Google Cloud Platform projects.

Features

• Query Logs: Search and filter logs across GCP projects
• Get Log Details: Retrieve detailed information about specific log entries
• List Projects: List available GCP projects

Getting Started

Prerequisites

• Bun runtime
• Google Cloud credentials configured
• Access to Google Cloud Logging API

Quick Start

1. Install dependencies:

   bun install
   

2. Set up Google Cloud credentials:

   # Option 1: Use gcloud CLI
   gcloud auth application-default login
   
   # Option 2: Use service account
   export GOOGLE_APPLICATION_CREDENTIALS="/path/to/service-account.json"
   

3. Set your project ID:

   export GOOGLE_CLOUD_PROJECT="your-project-id"
   

4. Run the server:

   bun run start
   

Using with Claude Desktop

Add the following to your Claude Desktop configuration file:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "cloud-logging": {
      "command": "bun",
      "args": ["run", "/path/to/cloud-logging-mcp/src/main.ts"],
      "env": {
        "GOOGLE_CLOUD_PROJECT": "your-project-id"
      }
    }
  }
}

Example Tool Usage

Query Logs

Search and filter logs from Google Cloud Logging.

{
  "tool": "queryLogs",
  "input": {
    "projectId": "my-project",
    "filter": "resource.type=\"cloud_run_revision\" AND severity>=ERROR",
    "orderBy": {
      "timestamp": "desc"
    },
    "pageSize": 50
  }
}

Parameters:

• projectId: GCP project ID
• filter: Log filter query (follows GCP logging query syntax)
• orderBy: Sort order for results
• pageSize: Number of results per page
• pageToken: Token for pagination
• resourceNames: Specific log resources to query
• summaryFields: Fields to include in the summary

Get Log Detail

Retrieve complete details for a specific log entry.

{
  "tool": "getLogDetail",
  "input": {
    "projectId": "my-project",
    "logId": "65f5a7b60000000001234567"
  }
}

Parameters:

• projectId: GCP project ID
• logId: The unique identifier of the log entry

List Projects

List all accessible Google Cloud projects.

{
  "tool": "listProjects",
  "input": {}
}

Parameters: None

Common Filter Examples

• By severity: severity>=ERROR
• By time range: timestamp>="2024-01-01T00:00:00Z"
• By resource: resource.type="cloud_run_revision"
• By text search: textPayload:"connection timeout"
• Combined: resource.type="k8s_container" AND severity=ERROR AND timestamp>="2024-01-01T00:00:00Z"

Troubleshooting

1. Authentication errors: Ensure your Google Cloud credentials are properly configured
2. Permission errors: Check that your account has the logging.logEntries.list permission
3. No results: Verify your filter syntax and that logs exist for your query

Development

# Run tests
bun test

# Type checking
bun run typecheck

# Linting
bun run lint

# Format code
bun run format

Architecture

The server follows a clean architecture pattern:

• /adapter: External service integrations (Google Cloud APIs)
• /domain: Core business logic and data models
• /port: Interface definitions and MCP tool handlers
• /util: Utility functions and helpers

License

MIT