Use marketplace skills in Antigravity

You will connect Antigravity to the OPVS MCP server, then find, read and use marketplace skills from a normal conversation. How the parts fit together is on How it works.

You need: Node.js 18 or newer, and an OPVS workspace (your workspace admin approves your access).

1. Install and sign in

npm install -g @opvs-ai/cli @opvs-ai/mcp
opvs auth request -e <your-workspace-admin-email>

Your admin receives an approval email. Once approved, the token is saved locally and the MCP server uses it.

2. Add the OPVS server to Antigravity

In Google Antigravity, open the agent panel's ⋯ menu → MCP Servers → Manage MCP Servers → View raw config and add:

{ "mcpServers": { "opvs": { "command": "opvs-mcp" } } }

Save and refresh; opvs should appear with its tools.

3. Check it works

Ask Antigravity:

Use tool_search to find an OPVS skill for cleaning tracking parameters out of URLs.

You should get ranked packages, for example @di-atomic/url-utils, each with a telemetry_signal.

4. Read a skill (nothing to install)

Use tool_read on @di-atomic/url-utils and follow its recipe to clean these links: …

tool_read returns the skill's SKILL.md and a list of its reference files; the agent can read any of them with tool_read(name, path="references/…"). That is all a guidance skill needs.

5. Use a skill that calls a service

1. Install it on your workspace. A workspace admin does this once, either in the OPVS dashboard (Skills, at app.opvs.ai/dashboard/marketplace) or by asking the agent to call tool_install with the package id from tool_search. If the package needs permissions or credentials, they are granted during install; missing ones leave it pending.

2. Learn its methods: tool_help(name="@vendor/name", section="methods").

3. Call it: tool_call(skill="@vendor/name", method="…", params={…}). Read the _guidance in the reply before acting on the data.

tool_list_installed shows what your workspace has installed.

Skill files in your project (known issue)

The skills CLI can also write a skill as native files for Antigravity (opvs-skills install @vendor/name --runtime antigravity --dest .). On 8 Nov 2026 this fails for marketplace packages (no bundle recorded (manifest-only package)), so use tool_read and tool_call through the MCP server until it is fixed.

Troubleshooting

More detail on the server itself: MCP server.