URL Callbacks: Trigger Alter From Anywhere + Kimi 2 on Groq

Alter can now be called from anywhere + call 3rd party apps with callback links!

The guide to use this feature is already available!

Read it here: Callbacks: Integrate and Automate with X-Callback-URLOlivier

Hey everyone,

Alter now speaks fluent inter-app.

With URL Callbacks, any action you build can be triggered from anywhere—your browser, notes app, password manager, or even a simple text file.

No more copy-paste gymnastics between tools.

🎶 Rex the Dog - Circulate

What Are Callback URLs?

A callback URL is a one-line command line for your Mac.

Stash it anywhere, a sticky note, Slack snippet, calendar event, and tap or click it to instantly open Alter and run the chosen action with the supplied text.

It’s equally happy in reverse: ask Alter to generate a callback that creates a Bear note, an Obsidian page, or a task in your to-do app, knitting all your tools into a single, clickable workflow.

Try it (works with the last version of Alter) - Copy and paste this in your browser

alter://action/ask-anything?input=Praise+The+User+With+A+Simple+Poem

🔗 How It Works (30-Second Setup)

Open the Action Editor → pick any action
Copy the x-url-callback under General (one click)
Paste the link anywhere (Bear, Obsidian, Notion, any web browser…)
Click → Alter launches and runs the action with context

Works bidirectionally. Alter can also create callback links that fire actions in other apps.

Real-World Magic

From Alter → Obsidian
“Create an Obsidian note titled ‘Q3 Brainstorm’ with my AI-generated outline.”
Alter writes a callback URL on the fly; paste it into Obsidian and—pop—a fresh note appears with the outline already inside.

Note: For Obsidian, either in your profile or in the Alter command, make sure to specify which vault you want the note to be created in.

From Keynote → Ask anything
Put callback links in your presentation to explain technical term simply.

For example: you wrote “Optimizse CAC”
Put a link on the word CAC alter://action/ask-anything?input=Explain+Simply+CAC+for+Saas to show explanation

A few examples of our callback URLs:

🔍 Our Search Query

alter://action/ask-web?input=What+is+Alter+MacOs

🧠 Our Business Intelligence Expert

1. Open Without Input:

alter://action/business-strategist-gpt

2. Open With Input:

alter://action/business-strategist-gpt?input=Explain+Red+Ocean+Strategy

🧑‍🤝‍🧑 Community Corner

Share your wildest callback workflows in Discord. Best automation wins a surprise :)

Full Changelog

New Features & Enhancements

x-url-callback Support
Launch Alter actions from any application via custom links.
Copy x-url-callback Button
Easily copy action links for integration into other applications.
URL Scheme Support
Support for all types of URL schemes in messages.
Browser Support
Improved support for Zen Browser.

Bug Fixes & Stability

Action Forms
Fixed issue where forms were skipped when starting with a shortcut.
Workspace Integration
Fixed context merging failing in workspaces.
PDF Support
PDFs are no longer treated as binary files in workspaces.
Pipedream Integration
Fixed issue where some applications would not start.
Tools Management
Fixed sending empty tool arrays.
Whisper Optimization
Improved Whisper prewarming for better performance.
Tahoe Compatibility
Fixed crashes in dictation settings on Tahoe.

Videos on Alter

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