generated: '2026-08-06'
method: searched
source: https://ogen.dev/docs/validator
name: ogen OpenAPI validator
kind: browser-playground
url: https://ogen.dev/docs/validator
credentials_required: false
signup_required: false
description: >-
  A first-party, no-signup playground on the docs site. It runs the real ogen
  parser and IR builder compiled to WebAssembly — the same pipeline the code
  generator uses — so the verdict reflects what ogen would actually accept.
  Paste or edit an OpenAPI v3 document, press Validate, and errors come back
  with source locations in the same form the ogen CLI prints them.
implementation:
  runtime: webassembly
  command: github.com/ogen-go/ogen/cmd/ogen-wasm
  execution: client-side
  data_handling: >-
    The site states everything runs locally in the browser and the document is
    never uploaded.
limitations:
  - >-
    Scope is schema validity. Operations ogen cannot yet generate are ignored —
    equivalent to generator.ignore_not_implemented ["all"] — so a valid result
    does not guarantee every operation is supported.
test_fixtures:
  - name: petstore.yml
    url: https://raw.githubusercontent.com/ogen-go/web/main/examples/petstore.yml
    description: >-
      The documented starter spec used by the getting-started guide; the same
      document works as validator input.
  - name: real-world spec corpus
    url: https://github.com/ogen-go/ogen/tree/main/examples
    description: >-
      Specs ogen regenerates in CI — GitHub (api.github.com.json), Kubernetes
      (k8s.json), OpenAI (openai.openapi.yaml), Telegram Bot API
      (telegram_bot_api.json), Firecracker (firecracker.json) and Petstore
      expanded (petstore-expanded.yml).
  - name: sample project
    url: https://github.com/ogen-go/example
    description: >-
      Complete runnable client + server + OpenTelemetry project to try the
      generated output end to end.
notes: >-
  ogen operates no hosted API, so there is no test/live key separation, no test
  card or magic-identifier surface, and no test clock. The validator plus the
  runnable example project are the full try-before-you-integrate surface.
x-evidence:
  fetched: '2026-08-06'
  probes:
    - url: https://ogen.dev/docs/validator
      http_status: 200
    - url: https://github.com/ogen-go/example
      http_status: 200