Best API products of the week August 31, 2026

VAT Engine

EU VAT calculation and compliance infrastructure for ecommerce and SaaS.

VAT Engine helps ecommerce businesses, SaaS teams, and developers calculate EU VAT, track OSS and IOSS exposure, and prepare reliable compliance reports. It combines VAT calculations, official rate data, transaction evidence, multi-store reporting, filing preparation, and developer-friendly APIs in one platform. Shopify integration is available, with support for additional ecommerce platforms planned. The goal is to make EU VAT workflows easier to understand, integrate, review, and hand over to accountants.

StackScope

See what new sites are built with, the week they launch

StackScope lets you see which sites started using Stripe, Shopify, or Next.js this week. We find most of what we index ourselves, over 2.2 million sites from public infrastructure signals, across 40,000+ technologies. These sites are not submitted to us, and when we spot a launch before the boards, we are often 14.5 days early. Browsing is free. Paid plans add Stackdar alerts, API access, bulk export with published contact details, and an MCP server for Claude, ChatGPT, and Cursor.

Rodz

Detect high-intent B2B prospects and reach them at the right time

Rodz turns B2B prospecting into a precision science by identifying real-time business signals. Instead of cold outreach, you get notified the moment potential clients raise funds, hire, or make strategic moves. The platform automatically enriches your leads with emails, phone numbers, and company data, pushing them directly into your favorite tools like HubSpot and Slack. By focusing on intent rather than static lists, sales teams can significantly increase reply rates and close more deals.

FiChecks

Create, print and mail professional checks from anywhere instantly.

FiChecks is an all-in-one business payment platform that helps businesses create, print, email, and mail checks while processing ACH payments from a single dashboard. Customize business checks, manage multiple bank accounts and users, send payments securely and streamline payroll, vendor payments, and accounts payable workflows.

One OpenAI-compatible API gives you access to hundreds of models on attested infrastructure. Enjoy end-to-end encryption with confidential routes and ZDR routes. Benefit from provider failover, BYOK (Bring Your Own Key), and no prompt or output logs, ensuring your data stays private and your service remains reliable.

Olostep

Web search, scraping and crawling for AI

Olostep provides a powerful Web Data API that lets you extract, crawl, and structure web data at scale. It is designed for AI teams, data pipelines, and automation workflows that need reliable and cost-effective data collection. With Olostep, you can easily pull data from any website, handle JavaScript-heavy pages, and get clean, structured output in JSON or CSV. The API is fast, handles millions of requests, and offers built-in retries and error handling. You do not need to manage proxies or headless browsers; Olostep takes care of the technical challenges. Whether you are building a price monitoring tool, aggregating news, or training machine learning models, Olostep simplifies the entire process, saving you time and money.

nullsink

nullsink — anonymous access to AI APIs

Access Claude, GPT, and confidential open models without an account, email, card, or KYC. Fund an anonymous API key from $2 with XMR or BTC and use existing Anthropic or OpenAI-compatible clients.