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WLST MCP Server

by rcarrascosps

WLST MCP Server

A Model Context Protocol (MCP) server for Oracle WebLogic Server administration using WLST (WebLogic Scripting Tool).

Overview

This MCP server provides a comprehensive set of tools for managing Oracle WebLogic Server domains, including server lifecycle management, application deployment, monitoring, and diagnostics.

Related MCP server: mcp-ssh-gateway

Project Structure

wlst-mcp/
├── src/
│   └── wlst_mcp.py          # Main MCP server implementation
├── README.md                 # This file - main documentation
├── ARCHITECTURE.md           # System architecture diagrams
├── INSTALLATION.md           # Prerequisites and installation guide
├── INTEGRATION.md            # Claude Desktop & Claude Code setup
├── EXAMPLES.md               # Usage examples and custom scripts
├── requirements.txt          # Python dependencies
├── LICENSE                   # Apache License 2.0
└── .gitignore               # Git ignore patterns

Quick Start

  1. Install dependencies:

    pip install -r requirements.txt
  2. Set environment variables:

    export WLST_ADMIN_URL=t3://localhost:7001
    export WLST_USERNAME=weblogic
    export WLST_PASSWORD=your_password
  3. Run the MCP server:

    python src/wlst_mcp.py
  4. Integrate with Claude: See INTEGRATION.md for detailed setup instructions.

Documentation

Document

Description

ARCHITECTURE.md

System architecture and component diagrams

INSTALLATION.md

Prerequisites, installation, security configuration

INTEGRATION.md

Claude Desktop & Claude Code integration

EXAMPLES.md

Usage examples and custom WLST scripts

Features

  • Server Management: Start, stop, restart, and monitor WebLogic servers

  • Application Deployment: Deploy, undeploy, and list applications

  • Application Diagnostics: Diagnose failed applications with root cause analysis and remediation suggestions

  • Monitoring: Real-time metrics for JVM, threads, JDBC, and JMS

  • Diagnostics: Thread dumps, health checks, and log analysis

  • Log Analysis: Analyze server and NodeManager logs to identify restart reasons, errors, and issues

  • Resource Management: JDBC datasources and JMS resources

  • Custom Scripting: Execute custom WLST/Jython scripts

Available Tools

Connection & Discovery

Tool

Description

wlst_test_connection

Test connectivity to a WebLogic Admin Server

wlst_list_servers

List all servers in a WebLogic domain with their status

Server Lifecycle

Tool

Description

wlst_start_server

Start a managed server

wlst_stop_server

Stop a managed server (supports force option)

wlst_restart_server

Restart a managed server

Application Management

Tool

Description

wlst_deploy

Deploy an application (WAR, EAR, JAR)

wlst_undeploy

Undeploy an application

wlst_start_application

Start a deployed application

wlst_stop_application

Stop a running application (without undeploying)

wlst_redeploy_application

Redeploy an application in place

wlst_list_applications

List all deployed applications

Monitoring & Metrics

Tool

Description

wlst_server_health

Get health status of WebLogic servers

wlst_server_metrics

Get detailed metrics (JVM, threads, JDBC, JMS)

Resource Management

Tool

Description

wlst_list_datasources

List all JDBC datasources

wlst_list_jms_resources

List JMS servers, modules, queues, and topics

Diagnostics

Tool

Description

wlst_thread_dump

Capture thread dump for debugging

wlst_analyze_logs

Analyze server and NodeManager logs to identify restart reasons and errors

wlst_diagnose_application

Diagnose why an application is in FAILED state with root cause analysis

wlst_execute_script

Execute custom WLST/Jython scripts

Tool Reference

wlst_test_connection

Test connectivity to a WebLogic Admin Server.

Parameters:

Parameter

Type

Required

Description

admin_url

string

No

Admin Server URL (e.g., t3://localhost:7001). Uses WLST_ADMIN_URL env var if not provided

username

string

No

WebLogic admin username. Uses WLST_USERNAME env var if not provided

password

string

No

WebLogic admin password. Uses WLST_PASSWORD env var if not provided

timeout

integer

No

Connection timeout in seconds (10-600, default: 120)


wlst_list_servers

List all servers in a WebLogic domain with their status.

Parameters:

Parameter

Type

Required

Description

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)


wlst_start_server

Start a managed server in a WebLogic domain.

Parameters:

Parameter

Type

Required

Description

server_name

string

Yes

Name of the managed server to start

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Operation timeout in seconds (10-600, default: 120)


wlst_stop_server

Stop a managed server in a WebLogic domain. Supports two shutdown modes:

  • Graceful shutdown (default): Waits for active sessions to complete before stopping. This is safer for production environments but takes longer.

  • Force shutdown: Stops the server immediately without waiting for sessions. Use when you need to stop quickly or the server is unresponsive.

Parameters:

Parameter

Type

Required

Description

server_name

string

Yes

Name of the managed server to stop

force

boolean

No

Force shutdown (immediate). If false, performs graceful shutdown waiting for sessions to complete. Default: false

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Operation timeout in seconds. Graceful shutdown may need longer timeout. (10-600, default: 300)

Shutdown Modes Comparison:

Mode

Parameter

Behavior

Use Case

Graceful

force: false

Waits for sessions to complete

Production, scheduled maintenance

Force

force: true

Immediate stop, sessions terminated

Emergency, unresponsive server


wlst_restart_server

Restart a managed server in a WebLogic domain. Performs a stop followed by a start.

Parameters:

Parameter

Type

Required

Description

server_name

string

Yes

Name of the managed server to restart

force

boolean

No

Force shutdown during restart. If false, performs graceful shutdown waiting for sessions. Default: false

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Operation timeout in seconds. Graceful restart may need longer timeout. (10-600, default: 300)


wlst_deploy

Deploy an application to WebLogic Server.

Parameters:

Parameter

Type

Required

Description

app_name

string

Yes

Application name

app_path

string

Yes

Path to the application archive (WAR, EAR, JAR)

targets

string

No

Comma-separated list of target servers/clusters

stage_mode

string

No

Deployment stage mode: stage, nostage, or external_stage (default: stage)

plan_path

string

No

Path to deployment plan XML

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password


wlst_undeploy

Undeploy an application from WebLogic Server.

Parameters:

Parameter

Type

Required

Description

app_name

string

Yes

Name of the application to undeploy

targets

string

No

Comma-separated list of target servers/clusters

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Operation timeout (10-600, default: 120)


wlst_start_application

Start a deployed application in WebLogic Server. The application must be already deployed but in a stopped (STATE_PREPARED) state.

Parameters:

Parameter

Type

Required

Description

app_name

string

Yes

Name of the application to start

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Operation timeout in seconds (10-600, default: 120)


wlst_stop_application

Stop a running application in WebLogic Server without undeploying it. The application transitions from STATE_ACTIVE to STATE_PREPARED, allowing it to be started again later.

Parameters:

Parameter

Type

Required

Description

app_name

string

Yes

Name of the application to stop

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Operation timeout in seconds (10-600, default: 120)

Application States:

State

Description

STATE_ACTIVE

Application is running and serving requests

STATE_PREPARED

Application is deployed but stopped (not serving requests)


wlst_redeploy_application

Redeploy an application in WebLogic Server. This updates the application in place without changing its configuration or targets. Useful for updating application code without a full undeploy/deploy cycle.

Parameters:

Parameter

Type

Required

Description

app_name

string

Yes

Name of the application to redeploy

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Operation timeout in seconds (10-600, default: 120)


wlst_list_applications

List all deployed applications in a WebLogic domain.

Parameters:

Parameter

Type

Required

Description

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)


wlst_server_health

Get health status of WebLogic servers.

Parameters:

Parameter

Type

Required

Description

server_name

string

No

Specific server name (all servers if not specified)

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)


wlst_server_metrics

Get detailed metrics for a WebLogic server.

Parameters:

Parameter

Type

Required

Description

server_name

string

Yes

Server name to get metrics for

metric_type

string

No

Type of metrics: all, jvm, threads, jdbc, jms (default: all)

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)


wlst_list_datasources

List all JDBC datasources in a WebLogic domain.

Parameters:

Parameter

Type

Required

Description

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)


wlst_list_jms_resources

List all JMS resources in a WebLogic domain.

Parameters:

Parameter

Type

Required

Description

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)


wlst_thread_dump

Get a thread dump from a WebLogic server for debugging.

Parameters:

Parameter

Type

Required

Description

server_name

string

Yes

Server name to get thread dump from

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password


wlst_analyze_logs

Analyze WebLogic server logs to identify restart reasons, errors, and issues. This tool examines NodeManager logs, server logs, and stdout/stderr output to detect OutOfMemoryErrors, JVM crashes, auto-restart events, and other critical issues.

Parameters:

Parameter

Type

Required

Description

server_name

string

Yes

Name of the server to analyze logs for

days

integer

No

Number of days to analyze (how far back in time). Range: 1-30, default: 1

log_type

string

No

Type of logs to analyze: all, server, nodemanager, stdout (default: all)

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)

Log Types:

Type

Description

all

Analyze all available logs (default)

server

Server log only (<server_name>.log)

nodemanager

NodeManager log only (nodemanager.log)

stdout

Server stdout/stderr only (<server_name>.out)

Detected Patterns:

Category

Patterns Detected

Restart Events

Server start/stop, auto-restart triggers, process crashes

Memory Errors

OutOfMemoryError, StackOverflowError

JVM Crashes

SIGSEGV, SIGKILL, SIGABRT signals

WebLogic Errors

BEA-XXXXX error codes

Warnings

Stuck threads, low memory, overload conditions


wlst_diagnose_application

Diagnose why an application is in FAILED state or having issues. This tool performs comprehensive diagnostics including checking source files, analyzing logs, and providing remediation suggestions.

Parameters:

Parameter

Type

Required

Description

app_name

string

No

Application name to diagnose. If not provided, diagnoses all applications in FAILED state

check_logs

boolean

No

Search server logs for related errors (default: true)

admin_url

string

No

Admin Server URL

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

response_format

string

No

Output format: markdown or json (default: markdown)

Diagnostics Performed:

Check

Description

State Analysis

Compares current runtime state vs intended state for each target

Source File Check

Verifies the application archive (WAR/EAR) exists on the filesystem

Staging Check

Verifies staged files exist for applications using stage mode

Log Analysis

Searches server and AdminServer logs for related errors

Pattern Detection

Identifies common issues (ClassNotFound, OutOfMemory, connection errors)

Issues Detected:

Issue Code

Description

SOURCE_FILE_MISSING

The application WAR/EAR file does not exist at the configured path

STAGING_MISSING

Staged files not found in the server's stage directory

CLASS_NOT_FOUND

Missing class or JAR dependency (ClassNotFoundException)

OUT_OF_MEMORY

JVM ran out of memory during deployment

CONNECTION_ERROR

Network or database connection issue during startup

DUPLICATE_RESOURCE

Duplicate JNDI name or resource conflict

Example Output:

# Application Diagnostics Report

## Summary
- **Applications Analyzed**: 1
- **Applications in FAILED State**: 1
- **Total Issues Found**: 1

## 🔴 simpleservlet

### State
- 🔴 **test_server1**: STATE_FAILED
- **Intended State**: STATE_ACTIVE

### Source File
- **Path**: `servers\AdminServer\upload\simpleservlet\app\simpleservlet.war`
- ❌ **File Exists**: No

### Issues Found
- ❌ Source file (WAR/EAR) not found on filesystem

### Probable Causes
- The application source file (WAR/EAR) does not exist at the configured path

### Recommendations
1. Re-deploy the application with a valid source file path
2. Or copy the application archive to the expected location

wlst_execute_script

Execute a custom WLST/Jython script.

Parameters:

Parameter

Type

Required

Description

script

string

Yes

WLST/Jython script to execute

admin_url

string

No

Admin Server URL (optional for offline scripts)

username

string

No

WebLogic admin username

password

string

No

WebLogic admin password

timeout

integer

No

Script execution timeout (10-1800, default: 120)

Configuration & Environment Variables

How Credentials Are Resolved

The MCP server uses a fallback mechanism to resolve connection parameters. For each parameter, it checks in the following order:

1. Tool parameter (if provided) → 2. Environment variable → 3. Error (if required)

This means:

  • If you provide a parameter in the tool call, it will be used

  • If the parameter is not provided, the environment variable is used as default

  • If neither is available, an error is returned for required parameters

Environment Variables Reference

Variable

Description

Example

WLST_ADMIN_URL

WebLogic Admin Server URL (protocol://host:port)

t3://localhost:7001

WLST_USERNAME

WebLogic admin username

weblogic

WLST_PASSWORD

WebLogic admin password

welcome1

URL Format

The WLST_ADMIN_URL must follow this format:

<protocol>://<host>:<port>

Component

Description

Examples

protocol

Connection protocol

t3, t3s, http, https

host

Admin Server hostname or IP

localhost, 192.168.1.100, admin.example.com

port

Admin Server listen port

7001 (default), 7002 (SSL)

Examples:

# Local development (non-SSL)
WLST_ADMIN_URL=t3://localhost:7001

# Local development (SSL)
WLST_ADMIN_URL=t3s://localhost:7002

# Remote server
WLST_ADMIN_URL=t3s://weblogic-admin.example.com:7002

# Using IP address
WLST_ADMIN_URL=t3://192.168.1.100:7001

Configuration Examples

Set environment variables before starting the MCP server:

Linux/macOS:

export WLST_ADMIN_URL=t3://localhost:7001
export WLST_USERNAME=weblogic
export WLST_PASSWORD=your_password

Windows (Command Prompt):

set WLST_ADMIN_URL=t3://localhost:7001
set WLST_USERNAME=weblogic
set WLST_PASSWORD=your_password

Windows (PowerShell):

$env:WLST_ADMIN_URL = "t3://localhost:7001"
$env:WLST_USERNAME = "weblogic"
$env:WLST_PASSWORD = "your_password"

Once configured, you can call tools without specifying connection parameters:

{
  "tool": "wlst_list_servers",
  "params": {}
}

Option 2: Tool Parameters (Override)

You can override environment variables by passing parameters directly:

{
  "tool": "wlst_list_servers",
  "params": {
    "admin_url": "t3://production-server:7001",
    "username": "admin_user",
    "password": "admin_password"
  }
}

Option 3: Claude Desktop Configuration

Configure in claude_desktop_config.json:

{
  "mcpServers": {
    "wlst-mcp": {
      "command": "python",
      "args": ["/path/to/wlst-mcp/server.py"],
      "env": {
        "WLST_ADMIN_URL": "t3://localhost:7001",
        "WLST_USERNAME": "weblogic",
        "WLST_PASSWORD": "your_password"
      }
    }
  }
}

Parameter Priority Example

Given this configuration:

# Environment variables
export WLST_ADMIN_URL=t3://dev-server:7001
export WLST_USERNAME=dev_user
export WLST_PASSWORD=dev_password

And this tool call:

{
  "tool": "wlst_list_servers",
  "params": {
    "admin_url": "t3://prod-server:7001"
  }
}

The resolved values will be:

Parameter

Value

Source

admin_url

t3://prod-server:7001

Tool parameter (override)

username

dev_user

Environment variable (fallback)

password

dev_password

Environment variable (fallback)

Response Formats

Most tools support two output formats:

  • markdown: Human-readable formatted output (default)

  • json: Machine-readable JSON output for programmatic use

License

Apache License 2.0 - See LICENSE for details.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

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