WunderGraph
WunderGraph
WunderGraph Cosmo – Manage Federated GraphQL APIs with routing, analytics, and tracing in one platform.
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About WunderGraph
WunderGraph Cosmo is an open-source platform for building and running federated GraphQL APIs, also called a supergraph. It supports Apollo Federation v1 and v2 and includes a schema registry, schema composition checks, breaking change detection, federated subscriptions, analytics, and distributed tracing with OpenTelemetry. The router is open source under the Apache 2.0 license and can be self-hosted or used as a managed service.
Beyond the core router, Cosmo offers Connect, which lets backend teams write plain gRPC services while the router handles GraphQL query planning and entity resolution; Streams, which pushes events from Kafka, NATS, or Redis to clients; and an MCP Gateway that exposes approved graph operations as tools for AI agents. A separate product, WunderGraph Hub, adds collaborative schema design, proposals, and ownership for governance.
The platform targets platform teams, consumer teams, and engineering leadership at organizations scaling federation across many subgraphs. Customers named on the site include eBay, SoundCloud, NerdWallet, Luxury Presence, and Soundtrack Your Brand. The company lists SOC 2 Type II, HIPAA, and ISO 27001 compliance.
Best for
- Platform teams running federated GraphQL
- Teams migrating from Apollo or AppSync
- Enterprises needing governed, self-hosted API infrastructure
Pros
- Open-source router under Apache 2.0, self-hosted or managed
- Free forever Developer plan with up to 10M requests monthly
- Built-in OpenTelemetry tracing, Prometheus metrics, and breaking change detection
- SOC 2 Type II, HIPAA, and ISO 27001 compliance listed
Cons
- SSO and RBAC are not available on the Developer or Launch plans
- Free plan limited to one user, one federated graph, and 10 subgraphs
- Scale and Enterprise pricing is not published
Pricing
Cosmo has a free forever Developer plan (1 graph, up to 10M requests/month), a Launch plan at $499/month (2 graphs, up to 250M requests), and custom-priced Scale and Enterprise plans.
WunderGraph FAQ
- Is WunderGraph Cosmo open source?
- Yes, Cosmo is described as open source, with its router released under the Apache 2.0 license and available for self-hosting or as a managed service.
- Does Cosmo support Apollo Federation?
- Yes, the router supports both Apollo Federation v1 and v2, and the site offers migration guidance from Apollo and AppSync.
- Is there a free plan?
- Yes, the Developer plan is free forever for one user, with one federated graph, up to 10 subgraphs, and up to 10M requests per month.
- Which plans include SSO and RBAC?
- SSO and role-based access control are included starting with the Scale plan.
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