Add billing with
OpenCode

Automatic

Billing expertise built into OpenCode

Use OpenCode with the Commet MCP server to generate and ship billing workflows faster.

billing.ts

import Commet from "commet-node";

const commet = new Commet({ apiKey: process.env.COMMET_API_KEY });

// Track usage
await commet.usage.track({
  customerId: "cus_123",
  featureSlug: "api-calls",
  amount: 1,
});

// Check access
const access = await commet.entitlements.check({
  customerId: "cus_123",
  featureSlug: "api-calls",
});

if (!access.allowed) {
  throw new Error("Usage limit reached");
}

import Commet from "commet-node";

const commet = new Commet({ apiKey: process.env.COMMET_API_KEY });

// Track usage
await commet.usage.track({
  customerId: "cus_123",
  featureSlug: "api-calls",
  amount: 1,
});

// Check access
const access = await commet.entitlements.check({
  customerId: "cus_123",
  featureSlug: "api-calls",
});

if (!access.allowed) {
  throw new Error("Usage limit reached");
}

opencode.json

{
  "mcp": {
    "commet": {
      "type": "remote",
      "url": "https://commet.co/mcp"
    }
  }
}

{
  "mcp": {
    "commet": {
      "type": "remote",
      "url": "https://commet.co/mcp"
    }
  }
}

Easy to use

Add Commet MCP to OpenCode

Configure the MCP server to create plans, manage subscriptions, and track usage directly from OpenCode.

Get started Documentation

Frequently Asked Questions

Install the Commet MCP server in OpenCode and connect it with your API key. Once connected, you can create plans, configure pricing models, manage subscriptions, and track usage — all without leaving OpenCode.

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 OpenCode native tools to manage billing. Once installed, OpenCode can create plans, manage subscriptions, track usage, and generate invoices through natural language.

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 4.5% + $0.40 per successful transaction. You can start building and testing for free using the sandbox environment.

Start billing in minutes

No setup fees. No monthly minimums. 4.5% + $0.40 per successful transaction.

Start billing for free

import Commet from "commet-node";

const commet = new Commet({ apiKey: process.env.COMMET_API_KEY });

// Track usage

await commet.usage.track({

customerId: "cus_123",

featureSlug: "api-calls",

amount: 1,

});

// Check access

const access = await commet.entitlements.check({

customerId: "cus_123",

featureSlug: "api-calls",

});

if (!access.allowed) {

throw new Error("Usage limit reached");

}

import Commet from "commet-node";

const commet = new Commet({ apiKey: process.env.COMMET_API_KEY });

// Track usage

await commet.usage.track({

customerId: "cus_123",

featureSlug: "api-calls",

amount: 1,

});

// Check access

const access = await commet.entitlements.check({

customerId: "cus_123",

featureSlug: "api-calls",

});

if (!access.allowed) {

throw new Error("Usage limit reached");

}

Add billing withOpenCode

Billing expertise built into OpenCode

Add Commet MCP to OpenCode

Frequently Asked Questions

Start billing in minutes

Add billing withOpenCode

Billing expertise built into OpenCode

Add Commet MCP to OpenCode

Frequently Asked Questions

Start billing in minutes

Add billing with
OpenCode

Add billing with
OpenCode