API Stack
API Stack (apistack.io) is a free directory and discovery platform operated by Apideck B.V., a Belgian company, that catalogs 213+ third-party API tools and services across 40+ categories.
Why this integration doesn't work
API Stack's Webflow Marketplace listing suggests "one-click integrations" for phone verification, email validation, and database connectivity. However, API Stack's business model as a directory service means it provides no integration infrastructure.
Documentation review confirms:
- API Stack's website contains no Webflow integration documentation, setup guides, or API specifications
- No API endpoints exist at standard discovery paths (apistack.io/api, apistack.io/openapi.json)
- The platform is not listed in API aggregator databases (RapidAPI, Postman's Public API Network)
- No SDKs or client libraries exist in package registries (npm, PyPI)
The Marketplace listing persists because Webflow lacks documented processes for removing integrations after initial approval.
Verified alternatives for Webflow backend functionality
For the backend capabilities that API Stack's listing suggests, use these verified alternatives with documented Webflow integrations:
For membership sites and authentication
- Memberstack: Native Webflow app for user registration, login, payment processing, and content gating by subscription tier
- Firebase Authentication: SDK integration supporting email/password, Google Sign-In, and phone verification
For database requirements
- Xano: Visual backend builder with PostgreSQL storage and auto-generated REST endpoints via official Webflow app
- Supabase: PostgreSQL databases with real-time subscriptions and row-level security
For content synchronization:
- Whalesync: Real-time two-way sync between Airtable and Webflow CMS with 5-minute setup
For workflow automation:
- Make: Visual automation with webhook-based triggers for form submissions and CMS changes
- Zapier: No-code trigger-action workflows connecting Webflow with 5,000+ apps
For full-stack applications:
- Wized: JavaScript framework integrating Webflow UI with backend APIs for dynamic web apps
Frequently asked questions
API Stack's Marketplace presence reflects a business model mismatch. API Stack operates as a directory listing other services, not as a service provider building integrations. Webflow's Marketplace guidelines require apps to be "fully functional and tested" before approval, but the platform doesn't publicly document processes for removing listings after initial approval. Similar patterns appear across integration marketplaces industry-wide.
Check for reciprocal documentation — the service provider should document Webflow integration on their own website with setup guides and implementation examples. One-sided documentation (where only Webflow mentions the integration) suggests non-functional status. Search Webflow forums and developer communities for implementation examples — active integrations generate user discussions and troubleshooting threads. Build a proof-of-concept in a development environment before production deployment.
For authentication and memberships, use Memberstack (native Webflow app) or Firebase Authentication. For database needs beyond Webflow CMS, use Xano or Supabase. For workflow automation triggered by Webflow events, use Make or Zapier with Webflow webhooks. For full-stack web applications, combine Webflow's visual design with Wized and a backend service like Xano.
Webflow provides API interfaces for programmatic access to site data and collections. The Webflow CMS API documentation details RESTful endpoints for managing collection items. The Rate Limits documentation explains request throttling. For custom integrations, reference the Apps framework documentation and Webflow Community forum for implementation examples.
Description
This integration page is provided for informational and convenience purposes only.
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