Cosmo: Open-Source
    GraphQL Federation Solution

    Unify distributed APIs into one federated graph. Platform teams get observability and control. Service teams ship independently.

    Federate Any API, Not Just GraphQL

    Connect REST, gRPC, and GraphQL services without rewrites. Cosmo Connect wraps existing APIs into your graph without forcing migrations.

    Track Every Query Across Your Entire Graph

    Native OpenTelemetry tracing from gateway to subgraph. Find slow queries and failing services in seconds with zero instrumentation required.

    Catch Breaking Changes Before Deployment

    Schema checks run automatically in CI/CD. Service teams ship on their own schedule, while platform teams prevent breaking changes from reaching production.

    Built for Scale and Performance

    Go router with sub-millisecond overhead. Deploy with built-in caching, rate limiting, and security controls wherever your infrastructure lives.

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    Trusted by platform teams managing complex API ecosystems

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