MCP Tools
The tools memex exposes to Claude via the Model Context Protocol.
When you connect memex to Claude, it gets access to 8 tools. Claude uses these automatically — you don't have to ask.
Tools
| Tool | Description |
|---|---|
save_note | Save a note. Warns if a semantically similar note already exists. |
search_notes | Hybrid semantic search with optional filters. |
list_notes | List recent notes by creation date. |
list_tags | All tags with note counts. |
list_folders | All folders with note counts. |
get_note | Full note content + backlinks by ID. |
update_note | Update title, content, or tags of an existing note. |
delete_note | Delete a note by ID. |
search_notes parameters
| Parameter | Type | Description |
|---|---|---|
query | string | The search query (natural language) |
limit | number | Max results (default 10) |
category | string | Filter to a specific folder |
tag | string | Filter by tag |
date_from | string | ISO 8601 date — only notes on or after this date |
date_to | string | ISO 8601 date — only notes on or before this date |
Example: "What did we decide about auth last April?" → Claude calls search_notes with query="auth decision", date_from="2025-04-01", date_to="2025-04-30".
save_note behavior
Before saving, Claude is instructed to:
- Call
list_tagsandlist_foldersto see existing taxonomy - Pick from existing tags/folders rather than inventing new ones
- Use
[[Title]]wiki-link syntax for references to people, projects, or concepts
If save_note returns a ⚠️ similar notes warning, Claude switches to update_note on the most relevant existing note instead of creating a duplicate.
get_note + backlinks
get_note returns the full note content and a "Referenced by" section listing every note that links to this one via [[Title]] syntax. Backlinks are resolved at save/update time.
Claude's automatic behavior
Claude is configured to:
- Always search before answering any question that might relate to past conversations, decisions, or projects
- Save at end of conversation when technical decisions were made, key insights emerged, or you explicitly said "remember this"
- Prefer update over save when new content belongs with an existing note