Best API Marketplaces for Model Context Protocol (MCP)

Zapier is a comprehensive AI automation platform that helps organizations transform how work gets done. It allows teams to connect AI tools with everyday apps to automate workflows end to end. Zapier supports AI workflows, custom agents, chatbots, forms, and data tables in one unified system. With over 8,000 integrations, it eliminates manual handoffs between tools and teams. Built-in AI assistance helps users design automations quickly without technical complexity. Zapier enables teams to deploy AI agents that work continuously, even outside business hours. The platform offers full visibility into automation activity with audit logs and analytics. Enterprise-grade security and compliance ensure safe AI adoption at scale. Zapier is used across departments including marketing, sales, IT, and operations. It helps teams save time, reduce costs, and scale productivity with confidence.

Cyclr is an embedded integration toolkit (embedded iPaaS) for creating, managing and publishing white-labelled integrations directly into your SaaS application. With a low-code, visual integration builder and a fully featured unified API for developers, all teams can impact integration creation and delivery. Flexible deployment methods include an in-app Embedded integration marketplace, where you can push your new integrations live, for your users to self serve, in minutes. Cyclr's fully multi-tenanted architecture helps you scale your integrations with security fully built in - you can even opt for Private deployments (managed or in your infrastructure). Accelerate your AI strategy by Creating and publishing your own MCP Servers too, so you can make your SaaS usable inside LLMs. We help take the hassle out of delivering your users' integration needs.

Glasser serves as a marketplace for data APIs tailored for AI developers and agents. It unifies various specialized data providers under a single account and balance, catering to needs such as company and individual research, SEO, finance, real estate, employment, social media, and product information. Users have the ability to explore available endpoints, examine input requirements and associated costs before making a request, and can access data through Glasser's hosted services, a Model Context Protocol (MCP) connection, a command-line interface, or via their agent setup skills. Rather than charging a monthly subscription fee, Glasser operates on a pay-per-call basis, with pricing varying by provider and endpoint. The platform facilitates agent workflows that require organized external data for tasks like research, lead generation, data enrichment, analytics, or searching. Users select which endpoint to utilize and can view both results and costs within their workspace. Additionally, searching for endpoints and checking prices comes at no cost, and new users are granted a $1 credit for their initial paid calls, making it an attractive option for those looking to leverage diverse data streams. Ultimately, Glasser streamlines the integration of essential data for various applications, enhancing the efficiency of AI-driven projects.

Axway Amplify is a modular API and integration platform designed to help enterprises connect systems, govern APIs, and enable secure AI-ready digital experiences. It supports federated API management, giving organizations visibility and control across APIs that live in different clouds, on-premises systems, gateways, repositories, and vendor environments. Amplify API Management helps teams design, implement, secure, publish, and manage APIs throughout the full lifecycle. Amplify Fusion provides low-code and no-code integration tools that allow business and IT users to build event-based workflows, connect applications, and automate recurring processes. Amplify Engage creates a marketplace for curated API products and digital assets, helping developers discover, subscribe to, and reuse approved APIs. Amplify AI Gateway helps organizations scale AI responsibly by protecting prompts, orchestrating LLM usage, authenticating access to AI services, and controlling compliance requirements. The platform also includes centralized monitoring, governance, and management capabilities for APIs across AWS, Azure, Istio, Axway, and other gateway environments. Amplify is modular, so companies can begin with API management, integration, AI governance, or API marketplace capabilities and expand over time. By combining API security, discovery, governance, integration, and AI enablement, Axway Amplify helps enterprises modernize without abandoning systems that already work.