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openapi toolkit validation helpers

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# validate

[![Tests][test-badge]][test-url] [![Coverage][cov-badge]][cov-url] [![CI vuln scan][vuln-scan-badge]][vuln-scan-url] [![CodeQL][codeql-badge]][codeql-url]



[![Release][release-badge]][release-url] [![Go Report Card][gocard-badge]][gocard-url] [![CodeFactor Grade][codefactor-badge]][codefactor-url] [![License][license-badge]][license-url]


[![GoDoc][godoc-badge]][godoc-url] [![Discord Channel][discord-badge]][discord-url] [![go version][goversion-badge]][goversion-url] ![Top language][top-badge] ![Commits since latest release][commits-badge]

---

A validator for OpenAPI v2 specifications and JSON schema draft 4.

## Announcements

* **2025-12-19** : new community chat on discord
  * a new discord community channel is available to be notified of changes and support users

You may join the discord community by clicking the invite link on the discord badge (also above). [![Discord Channel][discord-badge]][discord-url]

## Status

API is stable.

## Import this library in your project

```cmd
go get github.com/go-openapi/validate
```

## Contents

This package provides helpers to validate Swagger 2.0. specification (aka OpenAPI 2.0).

* A validator for Swagger specifications
* A validator for JSON schemas draft4
* Helper functions to validate individual values (used by code generated by [go-swagger](https://github.com/go-swagger/go-swagger)).
  * Required, RequiredNumber, RequiredString
  * ReadOnly
  * UniqueItems, MaxItems, MinItems
  * Enum, EnumCase
  * Pattern, MinLength, MaxLength
  * Minimum, Maximum, MultipleOf
  * FormatOf

### FAQ

* Does this library support OpenAPI 3?

> No.
> This package currently only supports OpenAPI 2.0 (aka Swagger 2.0).
> There is no plan to make it evolve toward supporting OpenAPI 3.x.
> This [discussion thread](https://github.com/go-openapi/spec/issues/21) relates the full story.
>
> An early attempt to support Swagger 3 may be found at: <https://github.com/go-openapi/spec3>

## Change log

See <https://github.com/go-openapi/validate/releases>

## References

<https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md>

## Licensing

This library ships under the [SPDX-License-Identifier: Apache-2.0](./LICENSE).

## Other documentation

* [All-time contributors](./CONTRIBUTORS.md)
* [Contributing guidelines][contributing-doc-site]
* [Maintainers documentation][maintainers-doc-site]
* [Code style][style-doc-site]

## Cutting a new release

Maintainers can cut a new release by either:

* running [this workflow](https://github.com/go-openapi/validate/actions/workflows/bump-release.yml)
* or pushing a semver tag
  * signed tags are preferred
  * The tag message is prepended to release notes

[test-badge]: https://github.com/go-openapi/validate/actions/workflows/go-test.yml/badge.svg
[test-url]: https://github.com/go-openapi/validate/actions/workflows/go-test.yml
[cov-badge]: https://codecov.io/gh/go-openapi/validate/branch/master/graph/badge.svg
[cov-url]: https://codecov.io/gh/go-openapi/validate
[vuln-scan-badge]: https://github.com/go-openapi/validate/actions/workflows/scanner.yml/badge.svg
[vuln-scan-url]: https://github.com/go-openapi/validate/actions/workflows/scanner.yml
[codeql-badge]: https://github.com/go-openapi/validate/actions/workflows/codeql.yml/badge.svg
[codeql-url]: https://github.com/go-openapi/validate/actions/workflows/codeql.yml

[release-badge]: https://badge.fury.io/gh/go-openapi%2Fvalidate.svg
[release-url]: https://badge.fury.io/gh/go-openapi%2Fvalidate

[gocard-badge]: https://goreportcard.com/badge/github.com/go-openapi/validate
[gocard-url]: https://goreportcard.com/report/github.com/go-openapi/validate
[codefactor-badge]: https://img.shields.io/codefactor/grade/github/go-openapi/validate
[codefactor-url]: https://www.codefactor.io/repository/github/go-openapi/validate

[godoc-badge]: https://pkg.go.dev/badge/github.com/go-openapi/validate
[godoc-url]: http://pkg.go.dev/github.com/go-openapi/validate
[discord-badge]: https://img.shields.io/discord/1446918742398341256?logo=discord&label=discord&color=blue
[discord-url]: https://discord.gg/FfnFYaC3k5

[license-badge]: http://img.shields.io/badge/license-Apache%20v2-orange.svg
[license-url]: https://github.com/go-openapi/validate/?tab=Apache-2.0-1-ov-file#readme

[goversion-badge]: https://img.shields.io/github/go-mod/go-version/go-openapi/validate
[goversion-url]: https://github.com/go-openapi/validate/blob/master/go.mod
[top-badge]: https://img.shields.io/github/languages/top/go-openapi/validate
[commits-badge]: https://img.shields.io/github/commits-since/go-openapi/validate/latest

[contributing-doc-site]: https://go-openapi.github.io/doc-site/contributing/contributing/index.html
[maintainers-doc-site]: https://go-openapi.github.io/doc-site/maintainers/index.html
[style-doc-site]: https://go-openapi.github.io/doc-site/contributing/style/index.html

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