Clerk

Auth infrastructure for humans and agents

[Clerk @clerk]

Typing a password one arrow key at a time is officially optional.

[Robert Soriano @wobsoriano]

Sign in on devices where signing in is a pain.

Powered by @Clerk’s OAuth Device Authorization Grant.

[Clerk @clerk]

Try these with Clerk's MCP server:

"Show me the user [email protected]."
"How many users does this app have?"
"List my Clerk applications."

[Clerk @clerk]

You ask your agent about a user and get a wall of JSON. Now Clerk’s MCP App shows you the user.

Agent Readiness update for Clerk - Nov 10

Here's what shipped 🚢
1. Clerk in Codex, with a UI

More info in 🧵

[Clerk @clerk]

1. Clerk in Codex, with a UI

Clerk's MCP server now ships an MCP App. Ask Codex about a user, and their details show up as a card right in the chat.

Here it is in action with @devingould18 👇

[Clerk @clerk]

Codex now knows Clerk.

The Clerk plugin for @OpenAI's Codex gives it Clerk-specific guidance for adding auth, building custom sign-in flows, and setting up Organizations and Billing.

Try asking Codex: "Add Clerk to my Next.js app and protect the dashboard route."

[Clerk @clerk]

Agents style components best when the styles are plain CSS. So that's how we built the new UserButton, with stable class names and layers you control.

In the Clerk Dashboard, that let us delete most of the wrapper code around it. @prestonb_xyz breaks down how, from design tokens to a custom 3D fold-out menu in plain CSS.
https://t.co/CR2xMX6976

[Clerk @clerk]

Using Clerk's MCP and need something you know is in our dashboard, but we haven't built a tool for it yet? Now your agent can easily computer-use to find it.

The browser sessions that our MCP gives to agents are read-only, no mutations allowed.

[Clerk @clerk]

1. Browser sessions for agents

Your MCP server can hand agents a single-use link that opens a signed-in browser, so agents stop getting stalled at sign-in pages.

https://t.co/Jh1OvQZyF4

[Clerk @clerk]

2. Step-up permissions for your MCP tools

Your MCP server can ask for only the permissions a tool needs, when the agent calls it, without dropping access the user already approved.

Setup guide: https://t.co/zLQdipjJhh

[Clerk @clerk]

Now agents can click through your dashboard.

Agent Readiness update for you - Nov 6

Here's what shipped 🚢
1. Browser sessions for agents
2. Step-up permissions for your MCP tools

More info in 🧵

[Clerk @clerk]

1. Browser sessions for agents

Your MCP server can hand agents a single-use link that opens a signed-in browser, so agents stop getting stalled at sign-in pages.

https://t.co/Jh1OvQZyF4

[Clerk @clerk]

Agents kept taking a deprecated setup path. We changed one error message to point them at the CLI. Then CLI adoption roughly tripled.

@devingould18 walks through the experiment with @gauge_sh: https://t.co/muz0A1pHpF

[Clerk @clerk]

Run clerk init in your Xcode project, or add --starter to create a new one with Clerk already set up.

https://t.co/mmQp4BW5Is

[Clerk @clerk]

Bundle IDs, Team IDs, Associated Domains, entitlements. The Clerk CLI now handles all of it for iOS and macOS.

Ask your agent: "Add Clerk to my iOS app using the Clerk CLI."

[Clerk @clerk]

@AlexMacBuilds Exactly. Agents get tools, not keys.

[Clerk @clerk]

From prompt to deployed app, without ever touching a secret key. 🔑

Agent Readiness update for Clerk - Nov 4

Here's what shipped 🚢
1. Straight shot to a deployed app
2. Skills over MCP
3. More tools in Clerk's MCP server

More info in 🧵

[Clerk @clerk]

Ask your agent: "Set my Clerk app's native session lifetime to 90 days and keep web sessions at 7 days."

Custom session lifetimes for native apps are now in Clerk.
https://t.co/VN1JRJrRdB

[Clerk @clerk]

Keeping web sessions short shouldn't mean signing mobile users out every week.

Clerk now lets native sessions have their own maximum lifetime. Set the lifetime that fits each platform, from 5 minutes to 10 years.

[Clerk @clerk]

Set it per app, so iOS and Android can each have their own minimum. Clerk's SDK shows the update screen for you, so there's no UI to build.

Tell your agent: "Set the minimum version of my iOS and Android apps in Clerk to the current release."

https://t.co/UrZNuj3K8U

[Clerk @clerk]

Sometimes your users just need to update.

Set a minimum version for your iOS and Android apps with Clerk, and anyone below it gets an update screen that links to the App Store or Google Play. They're still signed in when they come back.

[Clerk @clerk]

@h_v_raj Yes. On Next.js the agent can run npx clerk@latest init while signed out and get a real app with development keys, no human signup.

We've got more details here: https://t.co/PZBXYXFchw

[Clerk @clerk]

3. More tools in Clerk's MCP server

Your agent can now rename an application (update_application), list and add redirect URLs for mobile and desktop SSO (list_redirect_urls, create_redirect_url), and find or count users by organization, account status, or dates (list_users).

Setup guide: https://t.co/7A3P3L818D

[Clerk @clerk]

2. Skills over MCP

Clerk's MCP server can now send skills straight to your agent, so it picks up how to work with Clerk without extra setup. Early support in Codex today.