Google Antigravity + MemorySync

Overview

Install the MemorySync plugin bundle with one degit command and Google Antigravity’s agents remember: lifecycle hooks inject relevant memories at session start and alongside every prompt, and persist every exchange the moment it happens — through dependency-free Node scripts that run natively on Windows, macOS and Linux (the competing plugin’s hooks are bash-only, on a platform whose IDE ships for Windows). The bundle carries the MemorySync MCP server configured with Antigravity’s actual field names (serverUrl — not the url everyone copies from other tools’ docs), four auto-discovered skills, an always-on recall rule, and honest uninstall documentation including the MCP cache directories no other vendor mentions.

Setup status and requirements

Supported version

memorysync Antigravity plugin 1.0.0

Last setup review

2026-08-24

Permissions

A MemorySync API key with read and write scopes (or OAuth via dynamic client registration).

Limits

Hooks require Node.js 18+ on PATH. Uninstalling requires deleting the MCP cache directories under ~/.gemini/antigravity*/mcp/ as well as the plugin folder.

Capabilities

• One-command install: npx degit Rafay121/memorysync-plugins/antigravity
• Injected recall at session start + per prompt; detached zero-latency capture
• Cross-platform Node hooks — native Windows, macOS, Linux
• Correct serverUrl MCP config with ${MEMORYSYNC_API_KEY} interpolation, OAuth DCR fallback
• Four skills + an always-on recall rule, auto-discovered
• antigravity:: transcript scope — separate history, same shared memories
• Bundle integrity pinned in CI: scripts can never drift from the tested surface
• Uninstall documented including the MCP cache directories

Quick Start

# Full plugin (hooks + skills + rule + MCP):
npx degit Rafay121/memorysync-plugins/antigravity ~/.gemini/config/plugins/memorysync
# then restart Antigravity

# MCP only: add to ~/.gemini/config/mcp_config.json
# { "mcpServers": { "memorysync": {
#   "serverUrl": "https://mcp.memorysync.io/mcp",
#   "headers": { "X-API-Key": "${MEMORYSYNC_API_KEY}" } } } }

Use Cases

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