generated: '2026-08-06'
method: searched
source: >-
  npm registry (registry.npmjs.org) + PyPI (pypi.org) + the Hey API docs
  installation pages. Every entry below was resolved live against the registry
  on 2026-08-06; versions are the `latest` dist-tag at that time.
notes: >-
  Hey API ships CODE GENERATORS and generated-client runtimes, not a hosted-API
  SDK family. `@hey-api/openapi-ts` is the flagship (4,088,177 downloads in the
  week ending 2026-08-05, per api.npmjs.org). The `client-*` packages are the
  runtime HTTP clients the generated SDKs import. All first-party packages are
  MIT licensed and published under the `@hey-api` npm scope.
packages:
  - language: typescript
    registry: npm
    name: '@hey-api/openapi-ts'
    version: 0.99.0
    url: https://www.npmjs.com/package/@hey-api/openapi-ts
    install: npm install @hey-api/openapi-ts -D -E
    license: MIT
    official: true
    role: codegen
    description: OpenAPI to TypeScript code generator — SDKs, Zod schemas, TanStack Query hooks, 20+ plugins.
  - language: python
    registry: pypi
    name: hey-api
    version: 0.0.24
    url: https://pypi.org/project/hey-api/
    install: pip install hey-api
    official: true
    role: codegen
    description: OpenAPI to Python code generator — production-grade SDKs and Pydantic models.
    evidence: 'PyPI author metadata: Hey API <lubos@heyapi.dev>; Repository https://github.com/hey-api/hey-api'
  - language: typescript
    registry: npm
    name: '@hey-api/openapi-python'
    version: 0.0.24
    url: https://www.npmjs.com/package/@hey-api/openapi-python
    install: npm install @hey-api/openapi-python -D -E
    license: MIT
    official: true
    role: codegen
    description: npm distribution of the OpenAPI to Python code generator.
  - language: typescript
    registry: npm
    name: '@hey-api/client-fetch'
    version: 0.13.1
    url: https://www.npmjs.com/package/@hey-api/client-fetch
    install: npm install @hey-api/client-fetch
    license: MIT
    official: true
    role: client-runtime
    description: Fetch API client runtime for generated SDKs.
  - language: typescript
    registry: npm
    name: '@hey-api/client-axios'
    version: 0.9.1
    url: https://www.npmjs.com/package/@hey-api/client-axios
    install: npm install @hey-api/client-axios
    license: MIT
    official: true
    role: client-runtime
    description: Axios client runtime for generated SDKs.
  - language: typescript
    registry: npm
    name: '@hey-api/client-next'
    version: 0.5.1
    url: https://www.npmjs.com/package/@hey-api/client-next
    install: npm install @hey-api/client-next
    license: MIT
    official: true
    role: client-runtime
    description: Next.js client runtime for generated SDKs.
  - language: typescript
    registry: npm
    name: '@hey-api/client-nuxt'
    version: 0.4.2
    url: https://www.npmjs.com/package/@hey-api/client-nuxt
    install: npm install @hey-api/client-nuxt
    license: MIT
    official: true
    role: client-runtime
    description: Nuxt client runtime for generated SDKs.
  - language: typescript
    registry: npm
    name: '@hey-api/vite-plugin'
    version: 0.3.2
    url: https://www.npmjs.com/package/@hey-api/vite-plugin
    install: npm install @hey-api/vite-plugin -D -E
    license: MIT
    official: true
    role: build-integration
    description: Vite 5/6/7/8 plugin that runs the codegen inside the build pipeline.
  - language: typescript
    registry: npm
    name: '@hey-api/nuxt'
    version: 0.2.1
    url: https://www.npmjs.com/package/@hey-api/nuxt
    install: npm install @hey-api/nuxt -D -E
    license: MIT
    official: true
    role: build-integration
    description: Nuxt module that runs the codegen inside the build pipeline.
  - language: typescript
    registry: npm
    name: '@hey-api/codegen-core'
    version: 0.9.1
    url: https://www.npmjs.com/package/@hey-api/codegen-core
    license: MIT
    official: true
    role: framework
    description: TypeScript framework for generating files (shared codegen core).
  - language: typescript
    registry: npm
    name: '@hey-api/codegen-cli'
    version: 0.0.1
    url: https://www.npmjs.com/package/@hey-api/codegen-cli
    license: MIT
    official: true
    role: framework
    description: Shared CLI framework for Hey API code generators.
  - language: typescript
    registry: npm
    name: '@hey-api/spec-types'
    version: 0.2.0
    url: https://www.npmjs.com/package/@hey-api/spec-types
    license: MIT
    official: true
    role: types
    description: TypeScript definitions for OpenAPI and JSON Schema specifications.
  - language: typescript
    registry: npm
    name: '@hey-api/json-schema-ref-parser'
    version: 1.4.4
    url: https://www.npmjs.com/package/@hey-api/json-schema-ref-parser
    license: MIT
    official: true
    role: library
    description: Parse, resolve and dereference JSON Schema $ref pointers (Hey API fork).
  - language: typescript
    registry: npm
    name: '@hey-api/starlight-llms-txt'
    version: 0.10.2
    url: https://www.npmjs.com/package/@hey-api/starlight-llms-txt
    license: MIT
    official: true
    role: docs-tooling
    description: Generates llms.txt from a Starlight documentation site — what produces heyapi.dev/llms.txt.
ci_integrations:
  - name: hey-api/upload-openapi-spec
    kind: github-action
    url: https://github.com/marketplace/actions/upload-openapi-spec-by-hey-api
    repo: https://github.com/hey-api/upload-openapi-spec
    version: v1.3.0
    official: true
    description: >-
      GitHub Action that POSTs an OpenAPI document to the Hey API Platform
      (POST https://api.heyapi.dev/v1/specifications) on every CI build.
not_first_party:
  - registry: pypi
    name: openapi-python
    url: https://pypi.org/project/openapi-python/
    reason: >-
      Same-sounding name but PyPI author metadata is "Anders Brams
      <anders@brams.dk>" — unrelated to Hey API. Excluded deliberately.
x-evidence:
  fetched: '2026-08-06'
  npm_search: https://registry.npmjs.org/-/v1/search?text=%40hey-api&size=100
  npm_downloads: https://api.npmjs.org/downloads/point/last-week/@hey-api/openapi-ts
  npm_downloads_last_week: 4088177
  http_status: 200