agemcp 0.4.0

PostgreSQL MCP

Apache AGE MCP Server

These tools provide an interface for AI Agents to manage multiple graphs in Apache AGE. They expose tools for creating, updating, administering, and visualizing graphs.

Tool Name	Description	Parameters
get_or_create_graph	Get or create a graph with the specified name.	graph_name: str
list_graphs	List all graph names in the database.
upsert_graph	Upsert both vertices and edges into the specified graph (deep merge).	graph_name: str, vertices: List[Dict[str, Any]], edges: List[Dict[str, Any]]
upsert_edge	Insert or update an edge's properties in a graph non-destructively.	graph_name: str, label: str, edge_start_ident: str, edge_end_ident: str, properties: Dict[str, Any]
upsert_vertex	Insert or update a vertex's properties in a graph non-destructively.	graph_name: str, vertex_ident: str, label: str, properties: Dict[str, Any]
drop_graphs	Drop one or more graphs by name.	graph_names: List[str]
drop_vertex	Remove a vertex by ident.	graph_name: str, vertex_ident: str
drop_edge	Remove an edge by ident.	graph_name: str, edge_ident: str
generate_visualization	Generate a single-page HTML file visualizing a graph using vis.js and pyvis.	graph_name: str

Server Installation

Install the latest release using pipx (recommended for CLI/server tools):

# Install
pipx install agemcp

# Postgres DSN / MCP Server Defaults
agemcp config

# Start the server
agemcp run

You should see something like this:

INFO:     Starting MCP server 'agemcp' with transport 'streamable-http' on http://0.0.0.0:8000/mcp/
INFO:     Started server process [13951]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://0.0.0.0:8000 (Press CTRL+C to quit)

Client Installation

VSCode

1. Open Command Palette (Cmd+Shift+P or Ctrl+Shift+P).
2. Select MCP: Add Server...
3. Choose "HTTP" option.
4. Enter the server URL (e.g., http://localhost:8000/mcp/).
5. Enter a "server id" (e.g., agemcp).
6. Select Global for the scope.
7. Done. (It should appear in the extensions sidebar.)

Roo / Cline / Claude

{
  "mcpServers": {
    "agemcp": {
      "url": "http://localhost:8000/mcp/",
      "type": "streamable-http",
      "headers": {
        "Content-Type": "application/json"
      }
    }
  }
}