Codemagic MCP Server
A local Python MCP server that exposes the Codemagic CI/CD REST API as Claude-callable tools. Trigger builds, manage apps, download artifacts, and clear caches — all from Claude Code or Claude Desktop without leaving the chat.
Tools
Apps
Builds
Artifacts
Caches
Environment Variables
Webhooks
⚠️ These tools are marked as destructive and will prompt for confirmation before executing.
Quick Start
The fastest way to get running with Claude Code — no separate install step needed:
# 1. Add the server (uses uvx to run it on-demand)
claude mcp add codemagic -e CODEMAGIC_API_KEY=your-api-key-here -- uvx codemagic-mcp
# 2. Restart Claude Code — tools will appear in /tools
That's it. See Configuration for optional settings like CODEMAGIC_DEFAULT_APP_ID.
Installation
Requirements: Python 3.11+
Option 1 — uvx (recommended, no install needed)
uvx codemagic-mcp
Option 2 — pip
pip install codemagic-mcp
Option 3 — from source
git clone https://github.com/AgiMaulana/CodemagicMcp.git
cd CodemagicMcp
python3 -m venv .venv
.venv/bin/pip install -e .
Configuration
Get your API token from Codemagic User Settings → Integrations → Codemagic API.
You can provide settings as environment variables or via a .env file:
# .env
CODEMAGIC_API_KEY=your-api-key-here
# Optional: set a default app so you don't have to specify it every time
CODEMAGIC_DEFAULT_APP_ID=your-app-id-here
# Optional: customize managed temp log storage for get_step_logs(..., delivery="file")
CODEMAGIC_LOG_TEMP_DIR=/tmp/codemagic-mcp
CODEMAGIC_LOG_TTL_SECONDS=3600
CODEMAGIC_LOG_CLEANUP_INTERVAL_SECONDS=300
CODEMAGIC_LOG_MAX_TOTAL_BYTES=524288000
CODEMAGIC_LOG_MAX_FILE_COUNT=200
Default App ID
CODEMAGIC_DEFAULT_APP_ID is optional but recommended if you work primarily with one app. When set, the AI will use it automatically whenever a tool requires an app_id and none was specified. If it is not set, the AI will:
- Call
list_appsto discover available apps. - Use the app automatically if only one exists.
- Present the list and ask you to choose if multiple apps are found.
Step Log File Delivery
get_step_logs supports two delivery modes:
delivery="file"is the default and writes the log to a managed local temp file, returning metadata such asartifact_id,file_path,bytes,line_count, andexpires_at.delivery="inline"returns the raw step log text directly.
The local file mode is useful when a step log is too large to comfortably return inline. Managed log files are stored under CODEMAGIC_LOG_TEMP_DIR and expired files are cleaned up opportunistically whenever a new log file is written. The default retention window is controlled by CODEMAGIC_LOG_TTL_SECONDS and defaults to 3600 seconds.
The server also runs a startup cleanup pass and a periodic background cleanup loop. The loop interval is controlled by CODEMAGIC_LOG_CLEANUP_INTERVAL_SECONDS and defaults to 300 seconds. As an additional safety backstop, the managed temp directory is capped by CODEMAGIC_LOG_MAX_TOTAL_BYTES and CODEMAGIC_LOG_MAX_FILE_COUNT; when either cap is exceeded, the oldest files are evicted first.
get_step_log_artifact(build_id, step_id) checks whether that managed artifact still exists without calling Codemagic again or returning the file contents. The artifact metadata includes a deterministic artifact_id in this format:
artifact_<build_id>_<step_id>
If the artifact is missing, the server returns status="missing" with reason not_generated_or_expired, which means the file was either never generated or it expired and was deleted.
Register with Claude Code
Run the following command to add the server:
claude mcp add codemagic -- codemagic-mcp
Then set your API key in the MCP env config, or export it in your shell before starting Claude Code:
export CODEMAGIC_API_KEY=your-api-key-here
Alternatively, add it manually to ~/.claude.json:
{
"mcpServers": {
"codemagic": {
"command": "codemagic-mcp",
"env": {
"CODEMAGIC_API_KEY": "your-api-key-here",
"CODEMAGIC_DEFAULT_APP_ID": "your-app-id-here"
}
}
}
}
Using uvx (no prior installation needed)
{
"mcpServers": {
"codemagic": {
"command": "uvx",
"args": ["codemagic-mcp"],
"env": {
"CODEMAGIC_API_KEY": "your-api-key-here",
"CODEMAGIC_DEFAULT_APP_ID": "your-app-id-here"
}
}
}
}
Restart Claude Code — the tools will appear in /tools.
Register with Claude Desktop
Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):
{
"mcpServers": {
"codemagic": {
"command": "codemagic-mcp",
"env": {
"CODEMAGIC_API_KEY": "your-api-key-here",
"CODEMAGIC_DEFAULT_APP_ID": "your-app-id-here"
}
}
}
}
Restart Claude Desktop to pick up the changes.
Project Structure
codemagic_mcp/
├── config.py # pydantic-settings config (validates API key at startup)
├── client.py # httpx async client, one method per endpoint
├── server.py # FastMCP instance
└── tools/
├── apps.py
├── builds.py
├── artifacts.py
├── caches.py
├── variables.py
└── webhooks.py
Adding New Tools
- Add a method to
client.py - Add the tool function to the relevant
tools/*.pyfile - That's it —
server.pynever needs to change