Best Alternatives to API.market in 2025
API.market is a marketplace and hosted MCP gateway that helps developers and AI agents discover, access, and manage APIs. With its Streamable HTTP endpoint at https://api.market/api/mcp/gateway, it offers five tools for API discovery, operation inspection, API calls, usage checks, and subscription management. While it provides a convenient all-in-one solution, you might seek alternatives for various reasons—such as different pricing models, broader API catalogs, self-hosting options, or specialized features. Here are the best alternatives to API.market to consider.
RapidAPI
RapidAPI is one of the largest API marketplaces, offering thousands of public APIs across diverse categories. It provides a unified platform for discovering, testing, and connecting to APIs, with features like API key management, usage analytics, and monetization options for API providers. Unlike API.market, RapidAPI does not include a hosted MCP gateway, but it excels in breadth and community support.
Postman API Network
Postman API Network is a comprehensive platform for API discovery, documentation, and testing. It allows developers to explore public APIs, fork collections, and collaborate. While it lacks a dedicated MCP gateway, Postman's robust tooling for API development and its extensive network make it a strong alternative for those focused on the full API lifecycle.
APILayer
APILayer is a marketplace that offers a curated set of premium APIs, particularly in areas like currency exchange, geolocation, and weather. It provides simple pricing and reliable endpoints. For developers who need specific high-quality APIs rather than a vast catalog, APILayer can be a focused alternative, though it doesn't offer MCP gateway functionality.
Kong Gateway
Kong Gateway is an open-source API gateway that can be self-hosted or used via Kong Konnect. It provides advanced traffic management, security, and observability for APIs. While it's not a marketplace, it can serve as a replacement for the gateway aspect of API.market, especially for teams that want full control over their API infrastructure.
Tyk
Tyk is a lightweight, open-source API gateway with a focus on performance and ease of use. It offers a developer portal for API discovery and management, making it a viable alternative for organizations that need both a gateway and a marketplace-like experience. Tyk supports MCP-like integrations through custom plugins, though not out-of-the-box.
Apigee
Apigee, part of Google Cloud, is an enterprise-grade API management platform. It includes a developer portal for API discovery, analytics, and monetization. While it's more complex and costly than API.market, it provides robust gateway capabilities and can be a good fit for large enterprises needing comprehensive API governance.
MCP Server (Open Source)
For those specifically seeking an MCP gateway, open-source MCP server implementations (such as those from the Model Context Protocol community) offer a self-hosted alternative. These allow you to run your own gateway to connect AI agents to APIs, providing flexibility and control. However, they lack the integrated marketplace and subscription management features of API.market.
API.market stands out by combining an API marketplace with a hosted MCP gateway, making it easy for developers and AI agents to discover and use APIs. However, alternatives like RapidAPI and Postman API Network offer larger API catalogs and stronger community features, while Kong Gateway, Tyk, and Apigee provide powerful gateway solutions for self-hosting or enterprise needs. For those focused on MCP specifically, open-source MCP servers offer a customizable route. Evaluate your priorities—whether it's API variety, gateway control, or MCP integration—to choose the best alternative for your workflow.