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<meta data-react-helmet="true" http-equiv="x-ua-compatible" content="ie=edge"><meta data-react-helmet="true" property="og:title" content="OpenAPI Generator · Generate clients, servers, and documentation from OpenAPI 2.0/3.x documents"><meta data-react-helmet="true" property="og:image" content="https://openapi-generator.tech/img/docusaurus.png"><meta data-react-helmet="true" property="twitter:image" content="https://openapi-generator.tech/img/docusaurus.png"><meta data-react-helmet="true" name="twitter:image:alt" content="Image for OpenAPI Generator · Generate clients, servers, and documentation from OpenAPI 2.0/3.x documents"><meta data-react-helmet="true" name="twitter:card" content="summary"><meta data-react-helmet="true" name="description" content="There are a number of ways to use OpenAPI Generator. This page documents how to install the CLI artifact."><meta data-react-helmet="true" property="og:description" content="There are a number of ways to use OpenAPI Generator. This page documents how to install the CLI artifact."><meta data-react-helmet="true" property="og:url" content="https://openapi-generator.tech/docs/installation">
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href="/docs/roadmap">Roadmap</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/swagger-codegen-migration">Migrating from Swagger Codegen</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/fork-qna">Swagger Codegen Fork: Q&A</a></li></ul></li><li class="menu__list-item menu__list-item--collapsed"><a class="menu__link menu__link--sublist" href="#!">Releases</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/release-summary">Release Summary</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/release-3-0-0">Release Notes: 3.0.0</a></li></ul></li><li class="menu__list-item menu__list-item--collapsed"><a class="menu__link menu__link--sublist" href="#!">API</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/generators">Generators List</a></li></ul></li></ul></div></div></div><main class="docMainContainer_FFX1"><div class="padding-vert--lg"><div class="container"><div class="row"><div class="col"><div class="docItemContainer_2cwg"><article><header><h1 class="docTitle_1vWb">CLI Installation</h1></header><div class="markdown"><p>There are a number of ways to use OpenAPI Generator. This page documents how to install the CLI artifact.
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Installing OpenAPI Generator's CLI tool allows users to generate all available generators from the command line.</p><p>Some of the following are cross-platform options and some are not, these are called out where possible.</p><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="npm"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#npm" title="Direct link to heading">#</a>npm</h2><blockquote><p><strong>Platform(s)</strong>: Linux, macOS, Windows</p></blockquote><p>The <a href="https://github.com/openapitools/openapi-generator-cli">npm package wrapper</a> is cross-platform wrapper around the .jar artifact. It works by providing a CLI wrapper atop the JAR's command line options. This gives a simple interface layer which normalizes usage of the command line across operating systems, removing some differences in how options or switches are passed to the tool (depending on OS).
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<strong>Install</strong> the latest version of the tool globally, exposing the CLI on the command line:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">npm</span><span class="token plain"> </span><span class="token function" style="color:rgb(80, 250, 123)">install</span><span class="token plain"> @openapitools/openapi-generator-cli -g</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><p>To install a specific version of the tool, pass the version during installation:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token plain">openapi-generator-cli version-manager </span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">set</span><span class="token plain"> </span><span class="token number">5.3</span><span class="token plain">.0</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><p>To install the tool as a dev dependency in your current project:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">npm</span><span class="token plain"> </span><span class="token function" style="color:rgb(80, 250, 123)">install</span><span class="token plain"> @openapitools/openapi-generator-cli -D</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><p>Then, <strong>generate</strong> a ruby client from a valid <a href="https://raw.githubusercontent.com/openapitools/openapi-generator/master/modules/openapi-generator/src/test/resources/3_0/petstore.yaml">petstore.yaml</a> doc:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token plain">npx @openapitools/openapi-generator-cli generate -i petstore.yaml -g ruby -o /tmp/test/</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><blockquote><p><code>npx</code> will execute a globally available <code>openapi-generator</code>, and if not found it will fall back to project-local commands. The result is that the above command will work regardless of which installation method you've chosen.</p></blockquote><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="homebrew"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#homebrew" title="Direct link to heading">#</a>Homebrew</h2><blockquote><p><strong>Platform(s)</strong>: macOS</p></blockquote><p><strong>Install</strong> via <a href="https://brew.sh/">homebrew</a>:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token plain">brew </span><span class="token function" style="color:rgb(80, 250, 123)">install</span><span class="token plain"> openapi-generator</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><p>Then, <strong>generate</strong> a ruby client from a valid <a href="https://raw.githubusercontent.com/openapitools/openapi-generator/master/modules/openapi-generator/src/test/resources/3_0/petstore.yaml">petstore.yaml</a> doc:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token plain">openapi-generator generate -i petstore.yaml -g ruby -o /tmp/test/</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="docker"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#docker" title="Direct link to heading">#</a>Docker</h2><blockquote><p><strong>Platform(s)</strong>: Linux, macOS, Windows</p></blockquote><p>The OpenAPI Generator Docker image acts as a standalone executable. It can be used as an alternative to installing via homebrew, or for developers who are unable to install Java or upgrade the installed version.</p><p>To generate code from a valid <a href="https://raw.githubusercontent.com/openapitools/openapi-generator/master/modules/openapi-generator/src/test/resources/3_0/petstore.yaml">petstore.yaml</a> doc with this image, you'll need to mount a local location as a volume.
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You'll then need to output the generated code to this mapped volume. Everything else works the same as if you ran the command on your host machine.</p><p>Here's an example generating a Go client:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token plain">docker run --rm </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"> -v </span><span class="token variable" style="color:rgb(189, 147, 249);font-style:italic">${</span><span class="token variable environment constant" style="color:rgb(189, 147, 249);font-style:italic">PWD</span><span class="token variable" style="color:rgb(189, 147, 249);font-style:italic">}</span><span class="token plain">:/local openapitools/openapi-generator-cli generate </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"> -i /local/petstore.yaml </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"> -g go </span><span class="token punctuation" style="color:rgb(248, 248, 242)">\</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"> -o /local/out/go</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="jar"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#jar" title="Direct link to heading">#</a>JAR</h2><blockquote><p><strong>Platform(s)</strong>: Linux, macOS, Windows</p></blockquote><p>If you're looking for the latest stable version, you can grab it directly from Maven.org (Java 8 runtime at a minimum):</p><p>JAR location: <code>https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/5.3.0/openapi-generator-cli-5.3.0.jar</code></p><p>For <strong>Mac/Linux</strong> users:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">wget</span><span class="token plain"> https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/5.3.0/openapi-generator-cli-5.3.0.jar -O openapi-generator-cli.jar</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><p>For <strong>Windows</strong> users, you will need to install <a href="http://gnuwin32.sourceforge.net/packages/wget.htm">wget</a> or you can use Invoke-WebRequest in PowerShell (3.0+), e.g.</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-powershell codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token plain">Invoke-WebRequest -OutFile openapi-generator-cli.jar https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/5.3.0/openapi-generator-cli-5.3.0.jar</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><p>After downloading the JAR, run <code>java -jar openapi-generator-cli.jar help</code> to show the usage.</p><p>For Mac users, please make sure Java 8 is installed (Tips: run <code>java -version</code> to check the version), and export <code>JAVA_HOME</code> in order to use the supported Java version:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token builtin class-name" style="color:rgb(189, 147, 249)">export</span><span class="token plain"> </span><span class="token assign-left variable" style="color:rgb(189, 147, 249);font-style:italic">JAVA_HOME</span><span class="token operator">=</span><span class="token variable" style="color:rgb(189, 147, 249);font-style:italic">`</span><span class="token variable" style="color:rgb(189, 147, 249);font-style:italic">/usr/libexec/java_home -v </span><span class="token variable number" style="color:rgb(189, 147, 249);font-style:italic">1.8</span><span class="token variable" style="color:rgb(189, 147, 249);font-style:italic">`</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">export</span><span class="token plain"> </span><span class="token assign-left variable environment constant" style="color:rgb(189, 147, 249);font-style:italic">PATH</span><span class="token operator">=</span><span class="token variable" style="color:rgb(189, 147, 249);font-style:italic">${JAVA_HOME}</span><span class="token plain">/bin:</span><span class="token environment constant" style="color:rgb(189, 147, 249)">$PATH</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><h2><a aria-hidden="true" tabindex="-1" class="anchor" id="bash-launcher-script"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#bash-launcher-script" title="Direct link to heading">#</a>Bash Launcher Script</h2><blockquote><p><strong>Platform(s)</strong>: Linux, macOS, Windows (variable)</p></blockquote><p>One downside to manual JAR downloads is that you don't keep up-to-date with the latest released version. We have a Bash launcher script at <a href="https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/bin/utils/openapi-generator-cli.sh">bin/utils/openapi-generator.cli.sh</a> which solves this problem.</p><p>To install the launcher script, copy the contents of the script to a location on your path and make the script executable.</p><p>An example of setting this up (NOTE: Always evaluate scripts curled from external systems before executing them).</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token function" style="color:rgb(80, 250, 123)">mkdir</span><span class="token plain"> -p ~/bin/openapitools</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token function" style="color:rgb(80, 250, 123)">curl</span><span class="token plain"> https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/bin/utils/openapi-generator-cli.sh </span><span class="token operator">></span><span class="token plain"> ~/bin/openapitools/openapi-generator-cli</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token function" style="color:rgb(80, 250, 123)">chmod</span><span class="token plain"> u+x ~/bin/openapitools/openapi-generator-cli</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">export</span><span class="token plain"> </span><span class="token assign-left variable environment constant" style="color:rgb(189, 147, 249);font-style:italic">PATH</span><span class="token operator">=</span><span class="token environment constant" style="color:rgb(189, 147, 249)">$PATH</span><span class="token plain">:~/bin/openapitools/</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre><p>Now, <code>openapi-generator-cli</code> is "installed". On invocation, it will query the GitHub repository for the most recently released version. If this matches the last downloaded jar,
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it will execute as normal. If a newer version is found, the script will download the latest release and execute it.</p><p>If you need to invoke an older version of the generator, you can define the variable <code>OPENAPI_GENERATOR_VERSION</code> either ad hoc or globally. You can export this variable if you'd like to persist a specific release version.</p><p>Examples:</p><pre class="mdxCodeBlock_iHAB"><div class="codeBlockWrapper_2QGZ"><pre class="prism-code language-bash codeBlock_19pQ" style="color:#F8F8F2;background-color:#282A36"><div class="token-line" style="color:#F8F8F2"><span class="token comment" style="color:rgb(98, 114, 164)"># Execute latest released openapi-generator-cli</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain">openapi-generator-cli version</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># Execute version 3.1.0 for the current invocation, regardless of the latest released version</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token assign-left variable" style="color:rgb(189, 147, 249);font-style:italic">OPENAPI_GENERATOR_VERSION</span><span class="token operator">=</span><span class="token number">3.1</span><span class="token plain">.0 openapi-generator-cli version</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># Execute version 3.1.0-SNAPSHOT for the current invocation</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token assign-left variable" style="color:rgb(189, 147, 249);font-style:italic">OPENAPI_GENERATOR_VERSION</span><span class="token operator">=</span><span class="token number">3.1</span><span class="token plain">.0-SNAPSHOT openapi-generator-cli version</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># Execute version 3.0.2 for every invocation in the current shell session</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">export</span><span class="token plain"> </span><span class="token assign-left variable" style="color:rgb(189, 147, 249);font-style:italic">OPENAPI_GENERATOR_VERSION</span><span class="token operator">=</span><span class="token number">3.0</span><span class="token plain">.2</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain">openapi-generator-cli version </span><span class="token comment" style="color:rgb(98, 114, 164)"># is 3.0.2</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain">openapi-generator-cli version </span><span class="token comment" style="color:rgb(98, 114, 164)"># is also 3.0.2</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token comment" style="color:rgb(98, 114, 164)"># To "install" a specific version, set the variable in .bashrc/.bash_profile</span><span class="token plain"></span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">echo</span><span class="token plain"> </span><span class="token string" style="color:rgb(255, 121, 198)">"export OPENAPI_GENERATOR_VERSION=3.0.2"</span><span class="token plain"> </span><span class="token operator">>></span><span class="token plain"> ~/.bashrc</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token builtin class-name" style="color:rgb(189, 147, 249)">source</span><span class="token plain"> ~/.bashrc</span></div><div class="token-line" style="color:#F8F8F2"><span class="token plain">openapi-generator-cli version </span><span class="token comment" style="color:rgb(98, 114, 164)"># is always 3.0.2, unless any of the above overrides are done ad hoc</span></div></pre><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button></div></pre></div></article><div class="margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/OpenAPITools/openapi-generator/edit/master/website/../docs/installation.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 40 40" style="margin-right:0.3em;vertical-align:sub"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col text--right"><em><small>Last updated on <time datetime="2021-11-20T17:25:45.000Z" class="docLastUpdatedAt_1sqk">2021-11-20</time> by <strong>Kevin Chen</strong></small></em></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav"><div class="pagination-nav__item"></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/docs/plugins"><h5 class="pagination-nav__link--sublabel">Next</h5><h4 class="pagination-nav__link--label">Plugins »</h4></a></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_TbNY"><ul class="contents contents__left-border"><li><a href="#npm" class="contents__link">npm</a></li><li><a href="#homebrew" class="contents__link">Homebrew</a></li><li><a href="#docker" class="contents__link">Docker</a></li><li><a href="#jar" class="contents__link">JAR</a></li><li><a href="#bash-launcher-script" class="contents__link">Bash Launcher Script</a></li></ul></div></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="row footer__links"><div class="col footer__col"><h4 class="footer__title">Docs</h4><ul class="footer__items"><li class="footer__item"><a class="footer__link-item" href="/docs/customization">Customizing Generators</a></li><li class="footer__item"><a aria-current="page" class="footer__link-item active" href="/docs/installation">Installation</a></li><li class="footer__item"><a class="footer__link-item" href="/docs/integrations">Workflow Integrations</a></li></ul></div><div class="col footer__col"><h4 class="footer__title">Community</h4><ul class="footer__items"><li 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