Zipcodestack

Publishing API: post or schedule to 10 social networks with one HTTPS call, or from an AI agent over MCP. Free forever: 15 posts/month, 3 connected accounts, all networks except X.

Free web search and fetch API with rate limits. ⬆️ Back to Top

Webhook gateway hosted in Germany. Signature verification, retries, dead letter queue and replay. Free plan: 10,000 events per month.

EU VAT number validation REST API with VIES and national tax-registry fallback, returning the official VIES consultation number for audit records. Free tier of 100 validations/month, no credit card.

Real-time exchange rates for 590+ currencies and crypto. Unlimited API calls on the free plan, perfect for developers and finance apps.

API for online search and rapid insights and comprehensive research, with the capability of organization of research results. 1000 request/month for the Free tier with No credit card required.

A collection of free online SQL tools, including an SQL formatter and validator, SQL regex tester, fake data generator, and interactive database playgrounds.

Create secure RESTful APIs from CSV files. Upload a CSV file and instantly access the data via its API allowing faster application development. The free plan includes 2 APIs and 2,500 API calls per month. You don't need a credit card.