MCP Server for Splunk

MCP Server for Splunk

A Go implementation of the MCP server for Splunk. Supports STDIO and SSE (Server-Sent Events HTTP API). Uses github.com/mark3labs/mcp-go SDK.

Quickstart - Cursor integration

By configuring MCP Settings in Cursor, you can include remote data directly into the LLM context.

STDIO mode

cd /tmp # CHANGE ME
git clone https://github.com/jkosik/mcp-server-splunk.git
cd mcp-server-splunk/cmd/mcp-server-splunk/

Update Cursor settings in ~/.cursor/mcp.json:

{
  "mcpServers": {
    "splunk_stdio": {
      "name": "Splunk MCP Server",
      "description": "Splunk MCP server",
      "type": "stdio",
      "command": "/tmp/mcp-server-splunk/cmd/mcp-server-splunk/mcp-server-splunk", # CHANGE ME
      "env": {
        "SPLUNK_URL": "https://changeme.splunkcloud.com:8089", # CHANGE ME
        "SPLUNK_TOKEN": "abcdef" # CHANGE ME
      }
    }
  }
}

Alternatively re-build the server first:

go build -o cmd/mcp-server-splunk/mcp-server-splunk cmd/mcp-server-splunk/main.go

SSE mode

Start the server:

export SPLUNK_URL=https://your-splunk-instance:8089
export SPLUNK_TOKEN=your-splunk-token

# Start the server
go run cmd/mcp-server-splunk/main.go -transport sse -port 3001

Update Cursor settings in ~/.cursor/mcp.json:

{
  "mcpServers": {
    "splunk_sse": {
      "name": "Splunk MCP Server (SSE)",
      "description": "MCP server for Splunk integration (SSE mode)",
      "type": "sse",
      "url": "http://localhost:3001/sse"
    }
  }
}

MCP Tools and Prompts

• list_splunk_saved_searches

  • Parameters:
    • count (number, optional): Number of results to return (max 100, default 100)
    • offset (number, optional): Offset for pagination (default 0)

• list_splunk_alerts

  • Parameters:
    • count (number, optional): Number of results to return (max 100, default 10)
    • offset (number, optional): Offset for pagination (default 0)
    • title (string, optional): Case-insensitive substring to filter alert titles

• list_splunk_fired_alerts

  • Parameters:
    • count (number, optional): Number of results to return (max 100, default 10)
    • offset (number, optional): Offset for pagination (default 0)
    • ss_name (string, optional): Search name pattern to filter alerts (default "*")
    • earliest (string, optional): Time range to look back (default "-24h")

• list_splunk_indexes

  • Parameters:
    • count (number, optional): Number of results to return (max 100, default 10)
    • offset (number, optional): Offset for pagination (default 0)

• list_splunk_macros

  • Parameters:
    • count (number, optional): Number of results to return (max 100, default 10)
    • offset (number, optional): Offset for pagination (default 0)

• internal/splunk/prompt.go implements an MCP Prompt to find Splunk alerts for a specific keyword (e.g. GitHub or OKTA) and instructs Cursor to utilise multiple MCP tools to review all Splunk alerts, indexes and macros first to provide the best answer.

• cmd/mcp/server/main.go implements MCP Resource in the form of local CSV file with Splunk related content, providing further context to the chat.

Local usage and testing

STDIO mode (default)

export SPLUNK_URL=https://your-splunk-instance:8089
export SPLUNK_TOKEN=your-splunk-token

# List available tools
echo '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}' | go run cmd/mcp-server-splunk/main.go | jq

# Call list_splunk_saved_searches tool
echo '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"list_splunk_saved_searches","arguments":{}}}' | go run cmd/mcp-server-splunk/main.go | jq

SSE mode (Server-Sent Events HTTP API)

export SPLUNK_URL=https://your-splunk-instance:8089
export SPLUNK_TOKEN=your-splunk-token

# Start the server
go run cmd/mcp-server-splunk/main.go -transport sse -port 3001

# Call the server and get Session ID from the output. Do not terminate the session.
curl http://localhost:3001/sse

# Keep session running and and use different terminal window for the final MCP call
curl -X POST "http://localhost:3001/message?sessionId=YOUR_SESSION_ID" \
  -H "Content-Type: application/json" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list","params":{}}' | jq

Installing via Smithery

Dockerfile and smithery.yaml are used to support hosting this MCP server at [Smithery](https://smithery.ai/server/@jkosik/.

Certified by MCP Review: https://mcpreview.com/mcp-servers/jkosik/mcp-server-splunk