This MCP Server provides access to Seq's API endpoints for interacting with your logging and monitoring system through the Model Context Protocol. It enables you to manage signals, events, and alerts directly from compatible applications like Claude Desktop.
To install the Seq MCP Server:
npm install
npm run build
The server requires the following environment variables:
To use the Seq MCP Server with Claude Desktop, add it to your configuration file:
Edit ~/Library/Application Support/Claude/claude_desktop_config.json
Edit %APPDATA%/Claude/claude_desktop_config.json
Add the following configuration:
{
"mcpServers": {
"seq": {
"command": "node",
"args": ["/path/to/your/mcp-server-seq/build/seq-server.js"],
"env": {
"SEQ_BASE_URL": "your-seq-url",
"SEQ_API_KEY": "your-api-key"
}
}
}
}
Alternatively, if you prefer using npx:
{
"mcpServers": {
"seq": {
"command": "npx",
"args": ["-y", "mcp-seq"],
"env": {
"SEQ_BASE_URL": "your-seq-url",
"SEQ_API_KEY": "your-api-key"
}
}
}
}
Use the get-signals tool to fetch signals with various filtering options:
Use the get-events tool to retrieve events with extensive filtering capabilities:
Use the get-alertstate tool to retrieve the current state of alerts in your Seq instance.
Access the signals resource to list all shared signals with detailed information:
When using the get-events tool, you can specify the following time range options:
To verify the server is functioning correctly, run the test script:
npm run test-script
This helps diagnose any issues since MCP servers communicate over stdio which can make debugging challenging.
To add this MCP server to Claude Code, run this command in your terminal:
claude mcp add-json "seq" '{"command":"npx","args":["-y","mcp-seq"],"env":{"SEQ_BASE_URL":"your-seq-url","SEQ_API_KEY":"your-api-key"}}'
See the official Claude Code MCP documentation for more details.
There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json
file so that it is available in all of your projects.
If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json
file.
To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".
When you click that button the ~/.cursor/mcp.json
file will be opened and you can add your server like this:
{
"mcpServers": {
"seq": {
"command": "npx",
"args": [
"-y",
"mcp-seq"
],
"env": {
"SEQ_BASE_URL": "your-seq-url",
"SEQ_API_KEY": "your-api-key"
}
}
}
}
To add an MCP server to a project you can create a new .cursor/mcp.json
file or add it to the existing one. This will look exactly the same as the global MCP server example above.
Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.
The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.
You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.
To add this MCP server to Claude Desktop:
1. Find your configuration file:
~/Library/Application Support/Claude/claude_desktop_config.json
%APPDATA%\Claude\claude_desktop_config.json
~/.config/Claude/claude_desktop_config.json
2. Add this to your configuration file:
{
"mcpServers": {
"seq": {
"command": "npx",
"args": [
"-y",
"mcp-seq"
],
"env": {
"SEQ_BASE_URL": "your-seq-url",
"SEQ_API_KEY": "your-api-key"
}
}
}
}
3. Restart Claude Desktop for the changes to take effect