# MCPB Desktop Extension
Package for publishing tendem-mcp to [MCP Registry](https://registry.anthropic.com/) via the `.mcpb` format.
## What is this
MCPB (MCP Bundle) is a desktop extension format for Claude Desktop. This package wraps `tendem-mcp` from PyPI into an extension that users can install through the Registry.
## Structure
```
mcpb/
├── manifest.json # Metadata, server config, tool list
├── pyproject.toml # Dependency on tendem-mcp from PyPI
├── src/server.py # Entry point — imports and runs tendem-mcp
└── .mcpbignore # Files excluded from the bundle
```
- `manifest.json` — describes the extension: name, description, tools, `user_config` (API key), compatibility.
- `pyproject.toml` — single dependency: `tendem-mcp>=0.1.5`.
- `src/server.py` — entry point that Claude Desktop runs via `uv run`.
## How it builds
Build runs automatically on GitHub Release (`.github/workflows/mcpb-release.yml`):
1. Version from git tag (`v0.1.0` → `0.1.0`) is set in `manifest.json` and `pyproject.toml`
2. `scripts/gen_manifest_tools.py` syncs the tool list from server code into `manifest.json`
3. `npx @anthropic-ai/mcpb pack .` builds the `.mcpb` file
4. `tendem-mcp.mcpb` is uploaded to the release
## Tool sync
The tools list in `manifest.json` is auto-generated from registered tools in `tendem_mcp.server`:
```bash
uv run python scripts/gen_manifest_tools.py
```
This ensures manifest tool descriptions always match the code.
## Local build
```bash
cd mcpb
npx @anthropic-ai/mcpb pack . tendem-mcp.mcpb
```
Output: `tendem-mcp.mcpb`.
