lpush
Add a value to the beginning of a Redis list and optionally set an expiration time for the list.
Instructions
Push a value onto the left of a Redis list and optionally set an expiration time.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| name | Yes | ||
| value | Yes | ||
| expire | No |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | Yes |
Implementation Reference
- src/tools/list.py:11-21 (handler)The handler function for the 'lpush' MCP tool. Decorated with @mcp.tool(), it pushes a value to the left side of a Redis list using r.lpush(), optionally sets an expiration, and returns a success or error message.
@mcp.tool() async def lpush(name: str, value: FieldT, expire: Optional[int] = None) -> str: """Push a value onto the left of a Redis list and optionally set an expiration time.""" try: r = RedisConnectionManager.get_connection() r.lpush(name, value) if expire: r.expire(name, expire) return f"Value '{value}' pushed to the left of list '{name}'." except RedisError as e: return f"Error pushing value to list '{name}': {str(e)}" - src/common/server.py:6-17 (registration)The registration mechanism for all tools, including 'lpush'. Imports all modules in src/tools package, triggering the @mcp.tool() decorators to register the tools with the FastMCP server.
def load_tools(): import src.tools as tools_pkg for _, module_name, _ in pkgutil.iter_modules(tools_pkg.__path__): importlib.import_module(f"src.tools.{module_name}") # Initialize FastMCP server mcp = FastMCP("Redis MCP Server", dependencies=["redis", "dotenv", "numpy", "aiohttp"]) # Load tools load_tools()