@nexus-catalyst/antigravity-plugin

Automatic memory for Antigravity. Nexus-Catalyst recalls relevant context before each prompt and stores each turn — no manual tool calls.

How it works

Antigravity supports hook-based context injection, so (like Claude Code) this plugin injects recalled memories directly rather than relying on the model to call MCP tools:

| Hook | Trigger | What it does | |------|---------|--------------| | pre-prompt | Before the model sees your prompt | Queries NC and injects an <nc-context> block | | stop | After each turn completes | Sends the last prompt + response to NC for storage |

See _docs/antigravity-support.md.

Prerequisites

• Node.js 18+
• A Nexus-Catalyst account — sign up at nexus-catalyst.com
• A Plugin API key from app.nexus-catalyst.com → Account → API Keys

Install

npm install -g @nexus-catalyst/antigravity-plugin
nc-antigravity install
nc-antigravity set-key "nc_pk_live_..."

Verify:

nc-antigravity status

Commands

nc-antigravity install     Register NC hooks
nc-antigravity set-key     Save your NC plugin key (shared across all NC plugins)
nc-antigravity uninstall   Remove NC hooks (nothing else is touched)
nc-antigravity status      Show installation state and API key status

Configuration

One key works across all NC tool plugins. set-key writes it to ~/.nexus-catalyst/config.json; it can also be supplied via NC_PLUGIN_API_KEY.

NC_API_BASE_URL overrides the endpoint (default https://mcp.nexus-catalyst.com).

License

MIT — see LICENSE. Part of the Nexus-Catalyst/cli-hooks monorepo. The memory service requires an NC account.