Gemini Web MCP Setup
Connect Gemini Web to Plushcap through Gemini Spark with OAuth.
Gemini Web
Gemini Web has limited custom MCP support through Gemini Spark. It is not currently a general Gemini chat feature.
Current availability
Google currently requires:
- Gemini Spark access.
- A personal Google Account rather than a work or school account.
- Age 18 or older and location in the United States.
- English.
- Keep Activity enabled.
Custom MCP apps can currently be added only from Gemini Web and used within Gemini Spark tasks.
Connect with OAuth
- Open Gemini Web.
- Select Settings & help → Connected Apps.
- Under Custom apps for Spark, select Add a custom app.
- Enter:
text
https://mcp.plushcap.com/mcp
- Continue and complete the Plushcap authorization flow.
- Enable Plushcap in a Gemini Spark task.
Bearer-token limitation
Gemini's documented custom-app flow supports OAuth discovery and client credentials but does not document arbitrary Bearer headers. Use OAuth on this surface. For persistent API-key authentication, use Antigravity CLI, Codex CLI, or Claude Code.
Verify
In a Spark task, ask:
Use Plushcap to monitor new developer trends and summarize notable changes.
If Custom apps for Spark is missing, the account does not currently meet the rollout or eligibility requirements.
Official documentation
Last verified: July 29, 2026.