Cursor + MemorySync

Overview

Install the MemorySync plugin and Cursor remembers: lifecycle hooks send every prompt to fact extraction the moment you send it (a content-hash seed lets the server recognise a double-fired event, so its facts are extracted once; replies are not sent), a compact always-on rule keeps the agent recalling through the MemorySync MCP tools, and facts are tagged with the git repository. Cursor hooks cannot inject model context — the honest architecture is hook-automatic capture plus rule-driven recall — and every hook answers {"continue": true} on every path, so memory can never block or break a session. Also installable MCP-only via a one-click deeplink or npx memorysync-mcp-install.

Setup status and requirements

Supported version

memorysync Cursor plugin 1.4.0

Last setup review

2026-08-23

Permissions

A MemorySync API key with read and write scopes (or OAuth through the MCP server).

Limits

Full plugin requires a Cursor build with plugins + hooks and Node.js 18+ on PATH. Cursor hooks cannot inject context, so recall is rule + tool driven.

Capabilities

• Automatic capture: every prompt sent for fact extraction by hooks, not model discretion
• Always-on recall rule steering the agent through the MCP tools
• Per-repo project scoping from the git remote, worktree-aware
• Cross-platform Node hooks — native Windows, macOS, Linux
• Incapable of breaking a session: {"continue": true} on every path, tested
• One-click "Add to Cursor" deeplink and npx MCP-only installs
• Same skills and MCP tools as the Claude Code and Codex plugins

Quick Start

# MCP in one command:
npx memorysync-mcp-install --client cursor

# Full plugin (hooks + rule + skills): copy plugins/memorysync from
# github.com/memorysyncio/memorysync-plugins into
# ~/.cursor/plugins/local/memorysync, then "Developer: Reload Window".

Use Cases

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