WSO2 API Manager

Open source based API, MCP and AI gateway platform, deployable cloud or self-hosted.

Updated August 2026 · By the ERP Research Editorial Team · Independent and vendor-neutral.

Deployment: Cloud, On-premise, Hybrid
Company size: Mid-market, Enterprise
Pricing: Open source (free, self-hosted) or usage-based subscription tiers (Basic, Pro, Enterprise)
Founded: 2005
Headquarters: Santa Clara, California, United States

Overview

WSO2 API Manager is a full lifecycle API management platform built on an open source core, positioned by the vendor as an open platform to control APIs, AI services and MCP (Model Context Protocol) tools across multiple cloud environments without vendor lock-in. It covers API design, publication through a developer portal, gateway enforcement of security and traffic policies, analytics, and monetization.

The platform supports REST, GraphQL, gRPC, WebSockets and webhook traffic through its gateway layer, and can front multiple gateway types including WSO2's own gateway as well as Kong, AWS and Azure gateways through a federation model. It has also extended into AI infrastructure, offering an LLM gateway with multi-model routing across providers such as OpenAI, Azure AI, AWS Bedrock, Anthropic and Mistral, an MCP Gateway for exposing agent-consumable tools, and AI guardrails covering prompt validation, PII masking and content safety.

WSO2 API Manager can be deployed as a fully managed SaaS with a published 99.95% SLA, in a hybrid model with the data plane on customer infrastructure and a managed control plane, or fully self-hosted on Kubernetes, Docker, VMs or bare metal using the open source distribution.

Screenshots & demo

Demo video from the vendor's YouTube channel.

Features & capabilities

Gateway and Traffic Management

Multi-protocol gateway with support for federated third-party gateways.

Support for REST, GraphQL, gRPC, WebSockets and webhook traffic
Gateway federation across WSO2, Kong, AWS and Azure gateways
MCP traffic support for agent tool calls
LLM traffic routing for AI model endpoints

Developer Portal and Lifecycle

Publishing, discovery and lifecycle management for APIs and MCP tools.

Unified developer portal with an integrated MCP Hub
Full API lifecycle management from design through publication
Auto-generation of MCP servers from existing REST APIs
Semantic API discovery with natural language descriptions

AI and LLM Gateway

Governance layer for AI model and agent traffic alongside conventional APIs.

LLM Gateway with multi-model routing across OpenAI, Azure AI, AWS Bedrock, Anthropic and Mistral
MCP Gateway for agent-consumable tools
Semantic prompt validation and PII masking
Integration with Azure Content Safety and AWS Bedrock Guardrails
Semantic caching and adaptive routing

Analytics, Security and Monetization

Usage tracking, access control and consumption-based billing.

Product intelligence and analytics dashboards
Usage-based monitoring of API, MCP and AI consumption
Token-based rate limiting and chargeback tracking
Flexible authentication and authorization policies
Pay-as-you-go and tiered subscription monetization models

Common use cases

Governing REST, GraphQL and gRPC APIs through a single gateway layer
Federating multiple existing gateways, including Kong, AWS and Azure, under one control plane
Exposing internal REST APIs to AI agents by auto-generating MCP servers
Routing and governing calls to multiple LLM providers through one gateway with guardrails
Running a fully self-hosted, open source API management stack with no per-call licensing
Monetizing APIs with usage-based or tiered subscription billing

Strengths & considerations

Strengths

Open source core available for fully self-hosted deployment at no license cost
Gateway federation across its own gateway plus Kong, AWS and Azure gateways under one control plane
Extended into AI infrastructure with an LLM gateway, MCP Gateway and AI guardrails, not just conventional API management
Recognized as a Leader in the Forrester Wave for API Management (Q3 2024) and named a Gartner Customers' Choice for full life cycle API management (2023)

Pricing

Model

Open source (free, self-hosted) or usage-based subscription tiers (Basic, Pro, Enterprise)

WSO2 describes its pricing as transparent and usage-based, unified across cloud, hybrid and self-hosted deployments. The open source distribution can be self-hosted at no license cost; paid tiers add managed hosting, support and additional features. WSO2 does not publish specific tier prices; contact WSO2 for a quote. Get an independent shortlist with pricing guidance below.

Technical & security

Hosting: SaaS (99.95% SLA, multi-region) or self-hosted / hybrid on customer infrastructure

About the vendor

Founded: 2005
Headquarters: Santa Clara, California, United States
Employees: 750+
Ownership: Private (backed by EQT)
Notable customers: Wipro, Kotak, Saudi Aramco

Alternatives to WSO2 API Manager in API Management

Amazon API GatewayFully managed AWS service for creating, publishing and securing REST, HTTP and WebSocket APIs.ApigeeFull-lifecycle API management platform on Google Cloud, with SAP ERP and SAP Gateway connectors.Axway Amplify API ManagementFederated API lifecycle management with a policy-based gateway and developer portal.Azure API ManagementAzure-native platform to secure, govern and scale REST, GraphQL, SOAP and AI APIs across their lifecycle.BoomiCloud-native iPaaS connecting ERP, CRM and applications at scale IBM API ConnectFull lifecycle API and AI gateway platform built on IBM DataPower Gateway.

WSO2 API Manager — frequently asked questions

Is WSO2 API Manager open source?

Yes. WSO2 API Manager has an open source core that can be self-hosted at no license cost, alongside paid Basic, Pro and Enterprise subscription tiers that add managed hosting, support and additional features.

Can WSO2 API Manager govern AI and MCP traffic, not just conventional APIs?

Yes. WSO2 has extended the platform with an LLM Gateway for routing calls across providers such as OpenAI, Azure AI, AWS Bedrock, Anthropic and Mistral, an MCP Gateway for agent-consumable tools, and AI guardrails for prompt validation, PII masking and content safety.

How is WSO2 API Manager deployed?

It can run as a fully managed SaaS with a 99.95% SLA, in a hybrid model with the data plane on customer infrastructure and a managed control plane, or fully self-hosted on Kubernetes, Docker, VMs or bare metal.

Can WSO2 API Manager front other API gateways?

Yes. Its gateway federation capability lets it control multiple gateway types, including WSO2's own gateway plus Kong, AWS and Azure gateways, under a single control plane.

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