Add billing with
Gemini
Automatic
Billing expertise built into Gemini
Scaffold billing workflows with Gemini and deploy them with Commet. Plans, usage tracking, and checkout in minutes.
import { Commet } from "@commet/node";const commet = new Commet({ apiKey: process.env.COMMET_API_KEY });// Track usageawait commet.usage.track({customerId: "cus_123",featureCode: "api_calls",value: 1,eventId: "request_01JXYZ",});// Check accessconst access = await commet.usage.check({customerId: "cus_123",featureCode: "api_calls",});if (!access.allowed) {throw new Error("Usage limit reached");}
{"mcpServers": {"commet": {"httpUrl": "https://commet.co/mcp/v2"}}}
Easy to use
Add Commet MCP to Gemini
Configure the MCP server to create plans, manage subscriptions, and track usage directly from Gemini.
Agent Skills
Install Commet Skills
Agent Skills give Gemini the expertise it needs to set up billing, configure pricing models, and follow best practices. Install them with a single command.
npx skills add commet-labs/skills
Frequently Asked Questions
Install the Commet MCP server in Gemini and connect it with your API key. Once connected, you can create plans, configure pricing models, manage subscriptions, and track usage — all without leaving Gemini.
Commet supports metered (pay for what you use), credits (block when exhausted), balance (spend across features), seats (per-user pricing), and boolean (feature gating). You can configure any of these through the MCP server or SDK.
The Commet MCP server is a Model Context Protocol server that gives Gemini native tools to manage billing. Once installed, Gemini can create plans, manage subscriptions, track usage, and generate invoices through natural language.
Agent Skills give Gemini modular billing expertise — pricing model patterns, subscription lifecycle best practices, and SDK integration knowledge. Install them with a single command: npx skills add commet-labs/skills.
Yes. Commet has a built-in AI model catalog with per-token pricing. You can track input, output, and cache tokens with configurable margins. Usage events calculate costs automatically using the balance consumption model.
Yes. Commet is a Merchant of Record that handles taxes, compliance, refunds, and payouts. Stripe Tax is integrated for automatic tax calculation. You don't need to worry about tax logic.
Commet has no setup fees and no monthly minimums. You only pay 5% + $0.40 per successful transaction. You can start building and testing for free using the sandbox environment.