Tailcall on Ubuntu 24.04

Overview

Tailcall is an open source GraphQL platform that turns existing REST, gRPC and GraphQL services into one unified GraphQL API. Instead of writing resolver code, you describe how to compose your upstreams with a small set of declarative schema directives: a field can be backed by a REST endpoint, stitched from another GraphQL or gRPC service, computed by an offline expression, or chained through a prior query, and the gateway resolves each field by calling the right upstream while batching and caching requests to keep things fast. The whole API is defined in one readable schema file, so the shape of your graph and the way it maps onto your services live side by side and are easy to review and change.

It suits teams that want a single, consistent GraphQL surface over a sprawl of internal and third party services without standing up a bespoke backend for frontend, engineers modernising a REST estate behind a typed graph, and anyone who needs a fast, declarative API gateway they run and own themselves. Because behaviour is driven entirely by configuration, the same binary serves anything from a thin proxy over one API to a rich graph stitched across many.

Common uses

• Expose one unified GraphQL API over many REST, gRPC and GraphQL services
• Put a typed, declarative graph in front of an existing REST estate
• Run a fast, self owned GraphQL gateway configured from a single schema file