ad-si/invoice-maker — Generate beautiful invoices from simple Typst or YAML data records

Description and use

**Summary**
ad‑si/invoice‑maker is an open‑source tool that turns simple Typst or YAML records into polished, ready‑to‑send invoices. It offers a lightweight API/SDK/CLI that can be dropped into any billing or checkout flow, letting teams prototype or replace manual invoicing in just a few minutes. With active maintenance, a growing user base, and solid ecosystem signals, it is ready for production pilots.

**Value**

• **Speed to market** – By handling layout, PDF generation, and tax calculations automatically, the library eliminates the need to build a custom invoicing engine from scratch.
• **Flexibility** – Accepts both Typst (for fine‑grained design) and YAML (for data‑first workflows), making it easy to integrate with existing payment‑service‑provider (PSP) APIs or internal billing systems.
• **Cost‑effective** – Being open source, it removes licensing fees while still providing a professional‑grade invoice output that can be branded to match any product.

**Practical adoption path**

1. **Prototype** – Use the CLI to generate an invoice from a sample YAML file; verify formatting and required fields.
2. **Integrate** – Add the provided SDK (or call the REST‑style API) into your checkout or billing microservice, feeding it the transaction data you already collect.
3. **Customize** – Adjust the Typst template to match your brand or regulatory requirements, then lock the template version in your CI pipeline.
4. **Deploy** – Run the library as a sidecar container or as a serverless function, scaling it alongside your existing payment workflows.

**Production readiness**

• **Activity & community** – 169 stars, 19 forks, recent commits (last updated 2026‑05‑12), and 11 relevant topics indicate an engaged project.
• **Stability** – The API/SDK surface is small and well‑documented, reducing integration risk.
• **Ecosystem fit** – Works with common languages (via thin wrappers) and can be called from CI/CD pipelines, making it suitable for both dev‑ops and data‑engineering teams.
• **Remaining checks** – A final review of the license, security audit, and maintainer responsiveness is recommended, but no major red flags have been identified.

Overall, ad‑si/invoice‑maker offers a ready‑to‑use, customizable invoicing solution that can be piloted quickly and scaled to production with minimal engineering overhead.

Problem

ad-si/invoice-maker helps integrate monetization, billing, or PSP flows faster.

Outcome

High for an OSS candidate: recent activity, adoption, and ecosystem signals are strong enough for a serious pilot.

Workflow

• integrate billing or checkout
• evaluate PSP flows
• automate payment operations

Evidence

Generate beautiful invoices from simple Typst or YAML data records

Source