Merge pull request #3 from modelcontextprotocol/sqlite-server

Added SQLite Notes To Do Server

.gitignore

@@ -133,3 +133,166 @@ build/
 
 gcp-oauth.keys.json
 .*-server-credentials.json
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
+.pdm-python
+.pdm-build/
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/

src/sqlite/.python-version

@@ -0,0 +1 @@
+3.11

src/sqlite/README.md

@@ -0,0 +1,62 @@
+# Simple SQLite Notes Server
+
+A basic MCP server implementation that demonstrates note-taking functionality using the three core MCP primitives: Resources, Prompts, and Tools.
+
+## Core Concepts
+
+### Resources
+Resources are how clients access data from the server. In this case, they're notes stored in SQLite.
+
+```python
+# Access notes through a custom URI scheme
+note:///example_note   # Gets the content of 'example_note'
+```
+
+### Prompts
+Prompts allow generating text based on server state. Our server has a note summarization prompt that can be styled.
+
+```python
+# Example prompt with style argument
+{
+    "name": "summarize-notes",
+    "arguments": {
+        "style": "academic"  # Can be any style descriptor
+    }
+}
+```
+
+### Tools
+Tools modify server state. We have a simple tool to add new notes.
+
+```python
+# Adding a new note
+{
+    "name": "add-note",
+    "arguments": {
+        "name": "my_note",
+        "content": "This is my note content"
+    }
+}
+```
+
+## Key Implementation Details
+
+### Handler Registration
+All decorated handlers must be inside `__init__`:
+```python
+def __init__(self):
+    super().__init__("sqlite")
+
+    @self.list_resources()
+    async def handle_list_resources():
+        # Handler code here
+
+    @self.read_resource()
+    async def handle_read_resource():
+        # Handler code here
+```
+
+### Storage
+- Uses SQLite for persistent storage
+- Helper methods handle database operations
+- Clients are notified of state changes

src/sqlite/pyproject.toml

@@ -0,0 +1,16 @@
+[project]
+name = "sqlite"
+version = "0.1.0"
+description = "A simple SQLite MCP server"
+readme = "README.md"
+requires-python = ">=3.11"
+dependencies = [
+    "mcp>=0.9.0",
+]
+
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project.scripts]
+sqlite = "sqlite:main"

src/sqlite/src/sqlite/__init__.py

@@ -0,0 +1,9 @@
+from . import server
+import asyncio
+
+def main():
+    """Main entry point for the package."""
+    asyncio.run(server.main())
+
+# Optionally expose other important items at package level
+__all__ = ['main', 'server']