MonetizeKit vs Autumn

import { Autumn } from "autumn-js";

const autumn = new Autumn({ secretKey: process.env.AUTUMN_SECRET_KEY });

// Gate a feature and deduct in one call
const { allowed } = await autumn.check({
  customerId: "user_123",
  featureId: "messages",
  requiredBalance: 1,
  sendEvent: true,
});

// Record usage afterwards
await autumn.track({
  customerId: "user_123",
  featureId: "messages",
  value: 1,
});

import { MonetizeKit } from "@monetizekit/node";

const mk = new MonetizeKit({ apiKey: process.env.MONETIZEKIT_SECRET_KEY! });

// Gate a feature with an explainable decision
const decision = await mk.entitlements.check("cust_123", "api_access");
if (!decision.allowed) {
  // decision.reasonCode: "not_in_plan" | "limit_reached" | ...
  // decision.grantedByPlans: plans that would grant access
  // decision.resetsAt: when a reached limit's window resets
}

// Hold credits for work with unknown cost, capture the actual cost
const { value } = await mk.credits.withReservation(
  { customerId: "cust_123", amount: 100, description: "agent run" },
  async () => {
    const output = await runAgent();
    return { value: output, cost: output.tokensUsed * 0.01 };
  },
);