Install the Ultra binary on macOS, Linux, or Windows
For enterprise fleet deployment via Jamf Pro, see the MDM Deployment Guide. It covers zero-touch installation, deploy key authentication, and per-user identity resolution via SCIM.
Sign in to Ultra Hub and open Settings > Downloads.
Download and run the installer for your platform: .pkg on macOS, .msi on Windows. On Linux, extract the .tar.gz and move ultra into your PATH.
The same page has a prompt you can paste into an agent such as Claude Code or Cursor to install Ultra for you, plus the SHA-256 checksums for every download.
Customize the installation with environment variables:
Variable
Default
Description
INSTALL_DIR
/usr/local/bin
Custom installation directory
VERSION
Latest release
Pin to a specific version
ULTRA_DEPLOY_KEY
None
Deploy key to enroll with, saved during install
ULTRA_DEVICE_EMAIL
None
Your work email, used to attribute this device to you
Set them on the bash that runs the script, not on curl, or the script never sees them:
# Install to a custom directorycurl -sSL https://get.ultra.security/install.sh | INSTALL_DIR=~/.local/bin bash# Install a specific versioncurl -sSL https://get.ultra.security/install.sh | VERSION=0.5.0 bash
Stable releases include a detached signature for install.sh. Download the current v1 public key once and pin it in a location that only administrators can modify. The example below uses /usr/local/share/ultra/install-signing-v1.pem.Whenever you install or upgrade Ultra, download the current script and its matching signature:
OpenSSL prints Verified OK when the signature is valid. The signature proves that Ultra signed the downloaded bytes, but not that the script is the newest release. Do not run the installer if verification fails.
Your device links to the key’s workspace the first time Ultra starts.Already installed Ultra? Set the key afterwards and restart your AI agent, and Ultra picks it up on the next start. This reads the key from standard input, so it never lands in your shell history:
ultra config set deploy-key
See Deploy Keys for the config file and managed preference options, plus the full reference.
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`,_jsx(_components.code,{children:`install.sh`}),`. Download the current `,_jsxs(_components.a,{href:`https://get.ultra.security/install-signing-v1.pem`,children:[_jsx(_components.code,{children:`v1`}),` public key`]}),` once and pin it in a location that only administrators can modify. 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The signature proves that Ultra signed the downloaded bytes, but not that the script is the newest release. Do not run the installer if verification fails.`]})]})]}),`\n`,_jsx(Heading,{level:`2`,id:`installing-with-a-deploy-key`,children:`Installing with a Deploy Key`}),`\n`,_jsxs(_components.p,{children:[`If your admin gave you a deploy key, hand it to the installer and your device links itself. No sign-in, and no `,_jsx(_components.code,{children:`ultra login`}),` or `,_jsx(_components.code,{children:`ultra link`}),`.`]}),`\n`,_jsxs(Tabs,{children:[_jsxs(Tab,{title:`Installer`,id:`installer-2`,children:[_jsxs(_components.p,{children:[`The macOS and Windows installers both ask for the key during setup: macOS on a step titled `,_jsx(_components.strong,{children:`Ultra Enrollment`}),`, Windows on the first step of `,_jsx(_components.strong,{children:`Ultra Setup`}),`.`]}),_jsxs(_components.ol,{children:[`\n`,_jsxs(_components.li,{children:[`Enter your `,_jsx(_components.strong,{children:`Work email`}),`. This is what attributes the device to you in Ultra`]}),`\n`,_jsxs(_components.li,{children:[`Select `,_jsx(_components.strong,{children:`Have a setup key?`}),` and paste the key into `,_jsx(_components.strong,{children:`Setup code`}),`. Your admin may call it a deploy key; it is the same value and starts with `,_jsx(_components.code,{children:`dk_`})]}),`\n`,_jsxs(_components.li,{children:[`Click `,_jsx(_components.strong,{children:`Continue`})]}),`\n`]}),_jsxs(_components.p,{children:[`Choose `,_jsx(_components.strong,{children:`Skip`}),` if you were not given a key. You can sign in through the browser instead the first time Ultra starts.`]})]}),_jsxs(Tab,{title:`Terminal`,id:`terminal`,children:[_jsxs(_components.p,{children:[`Pass the key to the install script and it saves it for you. Set the variables on `,_jsx(_components.code,{children:`bash`}),`, not on `,_jsx(_components.code,{children:`curl`}),`:`]}),_jsx(CodeBlock,{filename:``,numberOfLines:`4`,language:`shellscript`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light github-dark`,style:{backgroundColor:`#fff`,\"--shiki-dark-bg\":`#24292e`,color:`#24292e`,\"--shiki-dark\":`#e1e4e8`},language:`shellscript`,children:_jsxs(_components.code,{language:`shellscript`,numberOfLines:`4`,children:[_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#6F42C1`,\"--shiki-dark\":`#B392F0`},children:`curl`}),_jsx(_components.span,{style:{color:`#005CC5`,\"--shiki-dark\":`#79B8FF`},children:` -fsSL`}),_jsx(_components.span,{style:{color:`#032F62`,\"--shiki-dark\":`#9ECBFF`},children:` https://get.ultra.security/install.sh`}),_jsx(_components.span,{style:{color:`#D73A49`,\"--shiki-dark\":`#F97583`},children:` |`}),_jsx(_components.span,{style:{color:`#005CC5`,\"--shiki-dark\":`#79B8FF`},children:` \\\\`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#24292E`,\"--shiki-dark\":`#E1E4E8`},children:` ULTRA_DEPLOY_KEY`}),_jsx(_components.span,{style:{color:`#D73A49`,\"--shiki-dark\":`#F97583`},children:`=`}),_jsx(_components.span,{style:{color:`#032F62`,\"--shiki-dark\":`#9ECBFF`},children:`dk_your_key_here`}),_jsx(_components.span,{style:{color:`#6F42C1`,\"--shiki-dark\":`#B392F0`},children:` \\\\`})]}),`\n`,_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#032F62`,\"--shiki-dark\":`#9ECBFF`},children:` ULTRA_DEVICE_EMAIL=you@example.com`}),_jsx(_components.span,{style:{color:`#005CC5`,\"--shiki-dark\":`#79B8FF`},children:` \\\\`})]}),`\n`,_jsx(_components.span,{className:`line`,children:_jsx(_components.span,{style:{color:`#032F62`,\"--shiki-dark\":`#9ECBFF`},children:` bash`})}),`\n`]})})})]})]}),`\n`,_jsx(_components.p,{children:`Your device links to the key’s workspace the first time Ultra starts.`}),`\n`,_jsx(_components.p,{children:`Already installed Ultra? Set the key afterwards and restart your AI agent, and Ultra picks it up on the next start. This reads the key from standard input, so it never lands in your shell history:`}),`\n`,_jsx(CodeBlock,{filename:``,numberOfLines:`1`,language:`shellscript`,children:_jsx(_components.pre,{className:`shiki shiki-themes github-light github-dark`,style:{backgroundColor:`#fff`,\"--shiki-dark-bg\":`#24292e`,color:`#24292e`,\"--shiki-dark\":`#e1e4e8`},language:`shellscript`,children:_jsxs(_components.code,{language:`shellscript`,numberOfLines:`1`,children:[_jsxs(_components.span,{className:`line`,children:[_jsx(_components.span,{style:{color:`#6F42C1`,\"--shiki-dark\":`#B392F0`},children:`ultra`}),_jsx(_components.span,{style:{color:`#032F62`,\"--shiki-dark\":`#9ECBFF`},children:` config`}),_jsx(_components.span,{style:{color:`#032F62`,\"--shiki-dark\":`#9ECBFF`},children:` set`}),_jsx(_components.span,{style:{color:`#032F62`,\"--shiki-dark\":`#9ECBFF`},children:` deploy-key`})]}),`\n`]})})}),`\n`,_jsxs(_components.p,{children:[`See `,_jsx(_components.a,{href:`/hub/deploy-keys`,children:`Deploy Keys`}),` for the config file and managed preference options, plus the full reference.`]}),`\n`,_jsx(Heading,{level:`2`,id:`platform-support`,children:`Platform Support`}),`\n`,_jsxs(Table,{children:[_jsx(_components.thead,{children:_jsxs(_components.tr,{children:[_jsx(_components.th,{children:`Platform`}),_jsx(_components.th,{children:`Architecture`})]})}),_jsxs(_components.tbody,{children:[_jsxs(_components.tr,{children:[_jsx(_components.td,{children:`macOS`}),_jsx(_components.td,{children:`Apple silicon and Intel`})]}),_jsxs(_components.tr,{children:[_jsx(_components.td,{children:`Windows`}),_jsx(_components.td,{children:`x64, arm64`})]}),_jsxs(_components.tr,{children:[_jsx(_components.td,{children:`Linux`}),_jsx(_components.td,{children:`x64, arm64`})]})]})]}),`\n`,_jsx(Warning,{children:_jsxs(_components.p,{children:[`After installing or upgrading Ultra, `,_jsx(_components.strong,{children:`restart your MCP agent`}),` (e.g., quit and reopen Claude Desktop, Cursor, etc.) for changes to take effect.`]})}),`\n`,_jsx(Note,{children:_jsxs(_components.p,{children:[`Ultra is distributed from a private repository. `,_jsx(_components.code,{children:`go install`}),` is not available. 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