api0.app

At a glance

• Editor score
  7.2 / 10
• Pricing
  Free plan
• Best for
  Builders wanting visual API marketplace creation
• Free plan
  Yes
• Marketplace type
  Both
• Facts checked
  22 Sep 2026

• Where it wins

  • Visual schema-to-endpoint builder with REST docs and OpenAPI 3.1
  • Supports plans, rate limits, usage metering, billing, and payouts
  • Combines public marketplace publishing with private API endpoints

• Where it doesn't

  • Free supports only up to 2 live endpoints
  • Public marketplace publishing starts with the Builder plan
  • No AI features or verified integrations

Our verdict on api0.app

api0.app combines a no-code API builder with an API marketplace for builders and API providers that want to create, document, publish, and monetize endpoints in one web-based platform. Users can connect databases, spreadsheets, or existing REST services, then generate live REST endpoints with authentication, validation, pagination, documentation, and OpenAPI 3.1 specifications. The product supports both public and private API publishing, making it suitable for marketplace-facing products as well as controlled API access.

The plan structure gives the product a clear progression. Free includes up to 2 live endpoints, 10,000 requests per month, community support, and a private marketplace listing. Builder adds unlimited endpoints, 1M requests per month included, usage-based billing and payouts, public marketplace listing, and priority support. Enterprise adds custom volume and SLA, a VPC or on-prem builder option, SSO and audit logs, and dedicated marketplace curation. The published plans show a freemium model, while the Builder and Enterprise tiers use custom-listed pricing rather than publicly displayed amounts.

Its standout strength is the connection between API construction and marketplace operations. Scoped API keys, rate limiting by plan, usage metering, subscriber billing, free tiers, per-call or monthly pricing, and payouts address the commercial layer, while analytics cover requests, errors, latency, and revenue. That breadth makes api0.app a strong fit for teams seeking visual API marketplace creation without assembling separate tooling for documentation, access control, billing, and reporting. It is less suited to buyers prioritizing verified ecosystem integrations or AI-assisted creation, and organizations needing enterprise deployment controls should look at the Enterprise tier.

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api0.app pricing

All 3 api0.app plans and prices →

api0.app fact sheet

Alternatives to api0.app

• RapidAPIA broad API marketplace for providers and enterprises, with flexible monetization and enterprise integrations.9.3
• Axway Amplify EngageA broad enterprise API marketplace for discovery, subscriptions, monetization, and analytics.8.8
• Google ApigeeA broad API management suite for organizations running large-scale API programs.8.6

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Featured on iTechGuides

api0.app is listed in our API Marketplace Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update