The Open-Source
GraphQL Federation Solution

Full Lifecycle API Management for (Federated) GraphQL. Schema Registry, composition checks, analytics, metrics, tracing and routing. Deploy 100% on-prem or use our Managed Service. Apache 2.0 licensed, no vendor-lock.

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Platform Engineering Teams Cosmo

What our customers have to say

Future of Federation

State of GraphQL Federation

We can clearly see three focus areas in which GraphQL Federation users are going. Users want to implement more real-time use cases with Subscriptions and solutions like EDFS (Event Driven Federation Subscriptions). There’s big interest in performance optimizations through tools like Query Cost Analysis and directives like `@provides`. Security is a very important topic with persisted Queries, rate limiting and depth limiting being the next items on the checklist of platform teams.

- JENS NEUSE, CEO, Co-Founder of WunderGraph

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Built for every use case

Manage GraphQL at any Scale,
from Monolith to Federation.

Full Lifecycle (Federated) GraphQL API Management

Cosmo is a drop-in replacement to other services like Apollo GraphOS. It's the only OSS solution that bundles everything from Router to Schema Registry, Analytics and Tracing in one package. Perfect for monolithic and Federated GraphQL APIs.

Federation v1 and v2 compatible

All your existing GraphQL Services will work out of the box. Any framework, any language.

Fast and Reliable Router

The fastest (see below) and most reliable Router for GraphQL with support for Subscriptions and JWT Auth.

Maximized compliance

Deploy Cosmo 100% on-prem for strict compliance requirements or use our managed service.

Powerful CLI

Manage all your GraphQL Workflows from the command line.

Migrate from Apollo in one click

Packed with nothing short of everything

Features that enable teams to move fast without breaking things

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Schema registry

Publish Schemas and compose them into Federated GraphQL APIs

query {
  departments {
    teams {
      employees {
        id

Changelog

Track and document all schema modifications over time

+ Details type added

o Employee type changed

- lastName field removed

+ @extends directive added

Synchronize Changes

Use Webhooks to sync Schema changes across systems

Integrations

Integrate Cosmo with your existing tooling and workflows

Feature Flags

Incremental feature rollout and staging environments

Schema checks

Validate Schema changes against real client-traffic to prevent breaking changes

Schema ValidityComposable

Non-breakingClient Usage

Gain valuable insights into your GraphQL API

Metrics

Access real-time metrics for graphs and subgraphs such as requests, errors and latency. Dive into query complexities and response times for peak performance

Distributed Tracing

Instrument your graphs and subgraphs and track queries across multiple services, identify bottlenecks, and ensure consistent, high-quality performance

Schema Field Usage

Monitor client interactions and operations usage on your schema fields. Use insights to guide schema evolution and cater to user needs

Advanced Request Tracing

Get the execution plan for your queries with verbose information about how it is resolved as a JSON and find means to optimize them

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We listen to what you and your team need

Enterprise grade tooling at your disposal

8x
better P99 latency and more requests per second than Apollo Router

Deliver raw performance with the Cosmo Router

Native High-Performance Query Execution Planner written in Go.
Dataloader 3.0, enabling ahead of time batch optimizations through its breadth-first execution strategy.
AST-JSON based result merging for maximum performance and minimal memory of the Resolver.
Single-Flight for Query Execution Planning and data-fetching to avoid duplicate work and reduce latency.
Cache Warmer to precompute and cache query plans to handle high throughput surges. See it in action at the Super Bowl.

P99 Latency

Cosmo Router

186ms

Apollo Router

1.51s

Apollo Gateway

9.01s

Lower is better

Requests Per Second

Cosmo Router

1167

Apollo Router

143

Apollo Gateway

Higher is better

JWT with Field-level Auth

Authenticate incoming requests to your federated graphs down to the field level with support for multiple providers

Docs

EDFS
Cosmo Exclusive

Event Driven Federated Subscriptions enables you to build highly scalable and resource-efficient graphs

Docs

Lambda Support
Cosmo Exclusive

The first and only solution to officially support running a GraphQL Federation Gateway on AWS Lambda

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Organization-wide Access Control

OIDC

Secure authentication and authorization protocol for seamless identity verification

RBAC

Granular access management for users within the organization with defined roles and permissions

API Keys

Create API keys to specific federated graphs or subgraphs for fine grained control

Audit Log

Understand activities performed by organization members directly or via API keys

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The convencience of a fully managed service without vendor-lock. No credit card required to get started.

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Router / Gateway

MCP Gateway

Documentation

Zero to Production

GitHub

Community

The Open-Source GraphQL Federation Solution