MCP Tools Overview
Synap exposes 11 MCP tools through the arx-mcp-server. Your AI uses these tools automatically — you don't need to call them directly.
Tools at a glance
| Tool | Description | Use when... |
|---|---|---|
arx_search | Keyword search | You know the exact words |
arx_similar | Semantic search | You remember the gist |
arx_add | Create a thought | Capturing insights |
arx_get | Get by ID | Fetching a specific node |
arx_update | Edit content | Correcting or expanding |
arx_delete | Remove thought | Cleaning up |
arx_list | Recent thoughts | Browsing latest |
arx_edges | List connections | Exploring relationships |
arx_link | Create connection | Linking related ideas |
arx_traverse | Walk the graph | Deep exploration |
arx_stats | Graph statistics | Health check |
How your AI uses them
You don't need to remember tool names. Just describe what you want:
| You say | Tool used |
|---|---|
| "What did I decide about caching?" | arx_search or arx_similar |
| "Find things related to privacy" | arx_similar |
| "Remember this: we chose Rust for..." | arx_add |
| "Show me what connects to that idea" | arx_edges + arx_traverse |
| "Link those two thoughts together" | arx_link |
| "How many thoughts do I have?" | arx_stats |
Authentication
The MCP server reads credentials from ~/.arx/config.json (written by npx arx-setup). Requests are authenticated via the X-ARX-Key header with your API key.