# MCP Jenkins
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The Model Context Protocol (MCP) is an open-source implementation that bridges Jenkins with AI language models following Anthropic's MCP specification. This project enables secure, contextual AI interactions with Jenkins tools while maintaining data privacy and security.

## Installation
Choose one of these installation methods:
```
# Using uv (recommended)
pip install uv
uvx mcp-jenkins

# Using pip
pip install mcp-jenkins
mcp-jenkins

# Docker
docker pull ghcr.io/lanbaoshen/mcp-jenkins:latest
docker run -p 9887:9887 --rm ghcr.io/lanbaoshen/mcp-jenkins:latest --transport streamable-http
```

## Line Arguments
When using command line arguments, you can specify the Jenkins server details as follows:

```shell
# Simple streamable-http example
uvx mcp-jenkins --transport streamable-http
```

| Argument                                                     | Description                                                                                                     | Required |
|--------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------|----------|
| `--env-file`                                                 | Path to a `.env` file to load configuration from. See [Environment Variables / .env file](#environment-variables--env-file) below. | No       |
| `--jenkins-url`                                              | The URL of the Jenkins server. (Http app can set it via headers `x-jenkins-url`)                                | No       |
| `--jenkins-username`                                         | The username for Jenkins authentication. (Http app can set it via headers `x-jenkins-username`) Set it together with the password, or leave both unset to access Jenkins anonymously. | No       |
| `--jenkins-password`                                         | The password or API token for Jenkins authentication. (Http app can set it via headers `x-jenkins-password`) Set it together with the username, or leave both unset to access Jenkins anonymously: what the server can then do is decided by the anonymous user's permissions in Jenkins. | No       |
| `--jenkins-timeout`                                          | Timeout for Jenkins API requests in seconds. Default is `5` seconds.                                            | No       |
| `--jenkins-verify-ssl/--no-jenkins-verify-ssl`               | Whether to verify SSL certificates when connecting to Jenkins. Default is to verify.                            | No       |
| `--jenkins-session-singleton/--no-jenkins-session-singleton` | Whether to use a singleton Jenkins client for all requests in the same session. Default is True.                | No       |
| `--read-only`                                                | Whether to enable read-only mode. Default is False                                                              | No       |
| `--transport`                                                | Transport method to use for communication. Options are `stdio`, `sse` or `streamable-http`. Default is `stdio`. | No       |
| `--host`                                                     | Host address for `streamable-http` transport. Default is `0.0.0.0`                                              | No       |
| `--port`                                                     | Port number for `streamable-http` transport. Default is `9887`.                                                 | No       |

## Environment Variables / .env file

Instead of passing credentials on the command line, you can set them as environment variables, or put them in a `.env` file:

```
JENKINS_URL=https://jenkins.example.com
JENKINS_USERNAME=alice
JENKINS_PASSWORD=xxxx
JENKINS_TIMEOUT=5
JENKINS_VERIFY_SSL=true
```

If a `.env` file is present in the current directory (or a parent directory), it is loaded automatically — no flag needed:
```shell
uvx mcp-jenkins --transport streamable-http
```

To load a `.env` file from a specific location, use `--env-file`:
```shell
uvx mcp-jenkins --env-file /path/to/.env --transport streamable-http
```

Values already set in the real environment take precedence over the `.env` file, and any `--jenkins-*` CLI flag takes precedence over both.

## Configuration and Usage

### Jetbrains Github Copilot
1. Open Jetbrains Settings
2. Navigate to Github Copilot > MCP > Configure
3. Add the following configuration:
```json
{
  "servers": {
    "my-mcp-server": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mcp-jenkins",
        "--jenkins-url=xxx",
        "--jenkins-username=xxx",
        "--jenkins-password=xxx"
      ]
    }
  }
}
```

### VSCode Copilot Chat
1. Create `.vscode` folder with `mcp.json` file in you workspace for local setup or edit `settings.json` trough settings menu.
2. Insert the following configuration:
- SSE mode
```json
{
    "servers": {
        "jenkins": {
            "url": "http://localhost:9887/sse",
            "type": "sse"
        }
    }
}
```
- Streamable-Http mode
```json
{
    "servers": {
        "mcp-jenkins-mcp": {
            "autoApprove": [],
            "disabled": false,
            "timeout": 60,
            "type": "streamableHttp",
            "url": "http://localhost:9887/mcp"
        }
    }
}
```

Run the Jenkins MCP server with the following command:
```shell
uvx mcp-jenkins \
  --jenkins-url xxx \
  --jenkins-username xxx  \
  --jenkins-password xxx \
  --transport sse
```

## Health Check Endpoint

When running with `--transport streamable-http` or `--transport sse`, the server exposes a plain HTTP liveness endpoint:

```
GET /healthz  ->  200 OK
```

It always returns `200` and bypasses the `x-jenkins-*` auth headers, so it is safe to use directly as a Kubernetes liveness/readiness probe without any Jenkins credentials. Example probe:

```yaml
livenessProbe:
  httpGet:
    path: /healthz
    port: 9887
  initialDelaySeconds: 5
  periodSeconds: 10
```

Note: this is a liveness check only — it does not verify connectivity to the upstream Jenkins server.

## Available Tools
| Tool                       | Description                                         |
|----------------------------|-----------------------------------------------------|
| `get_item`                 | Get a specific item by name.                        |
| `get_item_config`          | Get the configuration of a specific item.           |
| `get_item_parameters`      | Get the parameters of a specific item.              |
| `get_all_items`            | Get all items in Jenkins.                           |
| `query_items`              | Query items based on pattern.                       |
| `build_item`               | Build a item.                                       |
| `get_all_nodes`            | Get all nodes in Jenkins.                           |
| `get_node`                 | Get a specific node by name.                        |
| `get_node_config`          | Get the configuration of a specific node.           |
| `get_all_queue_items`      | Get all queue items in Jenkins.                     |
| `get_queue_item`           | Get a specific queue item by ID.                    |
| `cancel_queue_item`        | Cancel a specific queue item by ID.                 |
| `get_build`                | Get a specific build by job name and build number.  |
| `get_build_scripts`        | Get scripts associated with a specific build.       |
| `get_build_console_output` | Get the console output of a specific build.         |
| `get_build_parameters`     | Get the parameters of a specific build.             |
| `get_build_test_report`    | Get the test report of a specific build.            |
| `get_build_test_failures`  | Get the failing tests of a specific build.          |
| `get_running_builds`       | Get all currently running builds in Jenkins.        |
| `stop_build`               | Stop a specific build by job name and build number. |
| `get_pending_inputs`       | Get the pending input steps of a build paused for input. |
| `submit_input`             | Proceed with or abort a pipeline input step of a build. |
| `get_all_build_artifacts`  | List the artifacts of a specific build.             |
| `get_build_artifact`       | Download an artifact from a specific build.         |
| `get_build_artifact_url`   | Get the direct URL of an artifact from a specific build. |
| `get_view`                 | Get a specific view by name.                        |
| `get_all_views`            | Get the configuration of a specific view.           |
| `get_all_plugins`          | Get all installed plugins.                        |
| `get_plugin`              | Get a specific plugin by short name.              |
| `get_plugins_with_problems` | Get plugins with problems (missing dependencies, version mismatch, etc.). |
| `get_plugins_with_backup`   | Get plugins that can be downgraded.               |
| `get_plugins_with_updates` | Get plugins that have available updates.          |
| `get_plugin_dependency_graph` | Get dependency graph for a plugin in Graphviz format. |
| `run_groovy_script`       | Execute an arbitrary Groovy script on Jenkins.     |

Note: `get_pending_inputs` reads the `wfapi` endpoint served by the `pipeline-rest-api` plugin (bundled with
`pipeline-stage-view`). `submit_input` only needs that plugin when `input_id` is omitted — pass `input_id`
explicitly and it works on any Jenkins with the `pipeline-input-step` plugin.

## Contributing
[CONTRIBUTING.md](CONTRIBUTING.md)

## License
Licensed under MIT - see [LICENSE](LICENSE) file. This is not an official Jenkins product.

## Star History
[![Star History Chart](https://api.star-history.com/svg?repos=lanbaoshen/mcp-jenkins&type=Date)](https://www.star-history.com/#lanbaoshen/mcp-jenkins&Date)