# Schema Stitching

> Schema stitching from GraphQL Tools: combine multiple GraphQL services into one gateway schema with type merging, transforms and stitching directives, plus a handbook of worked examples.

## Documentation

- [Introduction](https://the-guild.dev/graphql/stitching/docs.md)
- [Basic Example](https://the-guild.dev/graphql/stitching/docs/getting-started/basic-example.md)
- [Remote Subschemas & Executors](https://the-guild.dev/graphql/stitching/docs/getting-started/remote-subschemas.md)
- [Duplicate Types](https://the-guild.dev/graphql/stitching/docs/getting-started/duplicate-types.md)
- [Adding Transforms](https://the-guild.dev/graphql/stitching/docs/getting-started/adding-transforms.md)
- [Error Handling](https://the-guild.dev/graphql/stitching/docs/getting-started/error-handling.md)
- [Overview](https://the-guild.dev/graphql/stitching/docs/approaches.md)
- [Schema Extensions](https://the-guild.dev/graphql/stitching/docs/approaches/schema-extensions.md)
- [Type Merging](https://the-guild.dev/graphql/stitching/docs/approaches/type-merging.md)
- [Stitching Directives](https://the-guild.dev/graphql/stitching/docs/approaches/stitching-directives.md)
- [Overview](https://the-guild.dev/graphql/stitching/docs/transforms.md)
- [Filtering](https://the-guild.dev/graphql/stitching/docs/transforms/filtering.md)
- [Renaming](https://the-guild.dev/graphql/stitching/docs/transforms/renaming.md)
- [Modifying](https://the-guild.dev/graphql/stitching/docs/transforms/modifying.md)
- [Cleanup](https://the-guild.dev/graphql/stitching/docs/transforms/cleanup.md)
- [Operational](https://the-guild.dev/graphql/stitching/docs/transforms/operational.md)
- [Custom Transforms](https://the-guild.dev/graphql/stitching/docs/transforms/custom-transforms.md)

## Handbook

- [Table of Contents](https://the-guild.dev/graphql/stitching/handbook.md)
- [Combining local and remote schemas](https://the-guild.dev/graphql/stitching/handbook/foundation/combining-local-and-remote-schemas.md)
- [Mutations & subscriptions](https://the-guild.dev/graphql/stitching/handbook/foundation/mutations-and-subscriptions.md)
- [Single-record type merging](https://the-guild.dev/graphql/stitching/handbook/foundation/type-merging-single-records.md)
- [Array-batched type merging](https://the-guild.dev/graphql/stitching/handbook/foundation/type-merging-arrays.md)
- [Type merging with multiple keys](https://the-guild.dev/graphql/stitching/handbook/foundation/type-merging-multiple-keys.md)
- [Nullable merges](https://the-guild.dev/graphql/stitching/handbook/foundation/type-merging-nullables.md)
- [Custom merge resolvers](https://the-guild.dev/graphql/stitching/handbook/foundation/custom-merge-resolvers.md)
- [Cross-service interfaces](https://the-guild.dev/graphql/stitching/handbook/foundation/type-merging-interfaces.md)
- [Computed fields](https://the-guild.dev/graphql/stitching/handbook/foundation/computed-fields.md)
- [Stitching directives SDL](https://the-guild.dev/graphql/stitching/handbook/foundation/stitching-directives-sdl.md)
- [Hot schema reloading](https://the-guild.dev/graphql/stitching/handbook/architecture/hot-schema-reloading.md)
- [Versioning schema releases](https://the-guild.dev/graphql/stitching/handbook/architecture/versioning-schema-releases.md)
- [Continuous Integration (CI) testing](https://the-guild.dev/graphql/stitching/handbook/architecture/continuous-integration-testing.md)
- [Public and private APIs](https://the-guild.dev/graphql/stitching/handbook/architecture/public-and-private-apis.md)
- [Persistent connection via WebSockets](https://the-guild.dev/graphql/stitching/handbook/architecture/persistent-connection.md)
- [Overview](https://the-guild.dev/graphql/stitching/handbook/other-integrations/subservice-languages.md)
- [JavaScript](https://the-guild.dev/graphql/stitching/handbook/other-integrations/subservice-languages/javascript.md)
- [Ruby](https://the-guild.dev/graphql/stitching/handbook/other-integrations/subservice-languages/ruby.md)
- [GraphQL Upload](https://the-guild.dev/graphql/stitching/handbook/other-integrations/graphql-upload.md)
- [Federation Supergraph](https://the-guild.dev/graphql/stitching/handbook/other-integrations/federation-supergraph.md)
- [Federation to Stitching SDL](https://the-guild.dev/graphql/stitching/handbook/other-integrations/federation-to-stitching-sdl.md)
- [Batching Arrays and Queries](https://the-guild.dev/graphql/stitching/handbook/appendices/batching-arrays-and-queries.md)