urql is a highly customizable and versatile GraphQL client library for JavaScript/TypeScript, organized as a monorepo with a core package (`@urql/core`), multiple exchange packages (middleware), and framework-specific bindings for React, Preact, Vue, Svelte, Solid, and Next.js. The core architecture is built on a composable exchange pipeline using Wonka reactive streams, where operations flow through a chain of exchanges (e.g., cache, fetch, subscription, SSR) that can be mixed and matched. The client dispatches GraphQL queries, mutations, and subscriptions, and returns results as streams. The `@urql/exchange-graphcache` package provides a sophisticated normalized cache with support for offline persistence, optimistic updates, pagination resolvers (Relay and simple), and schema-aware partial results. Framework integrations expose idiomatic hooks (e.g., `useQuery`, `useMutation`) or stores that wrap the core client and manage component lifecycle. External dependencies include Wonka for streams, `@0no-co/graphql.web` for GraphQL parsing, and framework-specific libraries. The repository also includes a documentation site, extensive examples, and a comprehensive test suite using Vitest and Cypress.