@miniduckco/stash

Integrate payments in under 15 minutes.

Install

npm install @miniduckco/stash

Getting started

Start with the quickstart tutorial: docs/tutorials/quickstart.md.

Quick examples

Make a payment (Paystack)

import { createStash } from "@miniduckco/stash";

const stash = createStash({
  provider: "paystack",
  credentials: { secretKey: process.env.PAYSTACK_SECRET_KEY! },
});

const payment = await stash.payments.create({
  amount: "25.00",
  currency: "ZAR",
  reference: "ORDER-100",
  customer: { email: "buyer@example.com" },
  urls: { returnUrl: "https://example.com/return" },
});

console.log(payment.redirectUrl);

Make a payment (Ozow)

import { createStash } from "@miniduckco/stash";

const stash = createStash({
  provider: "ozow",
  credentials: {
    siteCode: process.env.OZOW_SITE_CODE!,
    apiKey: process.env.OZOW_API_KEY!,
    privateKey: process.env.OZOW_PRIVATE_KEY!,
  },
});

const payment = await stash.payments.create({
  amount: "10.00",
  currency: "ZAR",
  reference: "ORDER-200",
  customer: { email: "buyer@example.com" },
  urls: { returnUrl: "https://example.com/return" },
});

console.log(payment.redirectUrl);

Make a payment (Payfast)

import { createStash } from "@miniduckco/stash";

const stash = createStash({
  provider: "payfast",
  credentials: {
    merchantId: process.env.PAYFAST_MERCHANT_ID!,
    merchantKey: process.env.PAYFAST_MERCHANT_KEY!,
    passphrase: process.env.PAYFAST_PASSPHRASE,
  },
});

const payment = await stash.payments.create({
  amount: "10.00",
  currency: "ZAR",
  reference: "ORDER-300",
  customer: { email: "buyer@example.com" },
  urls: { returnUrl: "https://example.com/return" },
});

console.log(payment.redirectUrl);

Create a subscription (Paystack)

const plan = await stash.subscriptions.plans.create({
  name: "Monthly Retainer",
  interval: "monthly",
  amount: "5000.00",
});

const subscription = await stash.subscriptions.create({
  customer: "CUS_xxxxxxxxxx",
  plan: plan.planCode,
});

console.log(subscription.status);

Docs (Diataxis)

• Tutorials: docs/tutorials/quickstart.md
• How-to guides: docs/how-to/README.md
• Reference: docs/reference/api.md
• Explanation: docs/explanation/architecture.md
• Skills quick reference: doc/skill.md

Examples

Runnable examples live in examples/:

• Index: examples/README.md

Subscriptions (Paystack)

Subscriptions let you create recurring billing in Paystack using plans and subscriptions.

Create a plan

import { createStash } from "@miniduckco/stash";

const stash = createStash({
  provider: "paystack",
  credentials: { secretKey: process.env.PAYSTACK_SECRET_KEY! },
});

const plan = await stash.subscriptions.plans.create({
  name: "Monthly Retainer",
  interval: "monthly",
  amount: "5000.00",
  amountUnit: "major",
  currency: "ZAR",
  invoiceLimit: 6,
});

console.log(plan.planCode);

Create a subscription

const subscription = await stash.subscriptions.create({
  customer: "CUS_xxxxxxxxxx",
  plan: "PLN_xxxxxxxxxx",
  authorization: "AUTH_xxxxxxxxxx",
  startDate: "2026-04-01T00:00:00.000Z",
});

console.log(subscription.subscriptionCode, subscription.status);

Webhook events

const parsed = stash.webhooks.parse({
  rawBody,
  headers,
});

if (parsed.event.type === "subscription.created") {
  const { subscriptionCode, customerCode, planCode } = parsed.event.data;
}

if (parsed.event.type === "invoice.payment_failed") {
  const { invoiceCode, subscriptionCode, amount, currency } = parsed.event.data;
}

Full example: examples/subscriptions-paystack.ts.

Observability

Structured logging (opt-in) emits canonical events with correlation IDs and safe metadata. See Structured logging.

Site (SvelteKit)

The landing page + docs site lives in site/ and renders markdown directly from docs/.

Local dev:

npm install --prefix site
npm run dev --prefix site -- --host 0.0.0.0 --port 5173

Docker preview:

docker build -t stash-site .
docker run --rm -p 5173:5173 stash-site

Providers and operations

Providers

• Ozow
• Payfast
• Paystack
• Paygate
• Peach

Supported operations

• payments.create
• payments.verify (Ozow, Paystack; Payfast unsupported)
• webhooks.parse
• subscriptions.plans.create (Paystack)
• subscriptions.create (Paystack)

Notes:

• Ozow hash excludes CustomerCellphoneNumber, Token, and GenerateShortUrl.
• Ozow AllowVariableAmount=false is excluded from the hash.
• Payfast signature excludes setup and requires uppercase URL encoding.
• Paystack subscriptions emit subscription + invoice webhook events.