Caesr
Agentic test automation platform for desktop, web, mobile, and embedded HMI interfaces.
Pricing
About Caesr
AskUI is an agentic test automation platform that uses computer-use agents to automate testing across desktop, web, mobile, and embedded HMI interfaces. Instead of relying on DOM queries or fragile UI selectors, agents observe the screen visually and reason about actions to perform, making it capable of testing interfaces that traditional tools cannot reach. The platform is designed for QA engineers, developers, and engineering leaders who need reliable automation on real infrastructure. One limitation is that LLM-based results may vary, though the platform implements caching and structured prompts to maintain consistency.
At a glance
- Company
- AskUI GmbH
- Platforms
- Web, macOS, Windows, Linux, Android, iOS, API
- API
- Available
- Integrations
- GitLab, Azure DevOps
- Last verified
- June 2026
Who It's For
- •QA engineers testing complex interfaces
- •Developers automating system testing
- •Engineering leaders managing production automation infrastructure
- •Teams working with legacy systems lacking accessible APIs
- •Organizations requiring on-premises deployment and compliance
How It Works
- 1Install AgentOS on target devices (macOS, Windows, Linux, Android, iOS, or embedded screens via Companion Mode with HDMI capture)
- 2Configure system prompts, LLM models, and allowed tools for each agent
- 3Agent observes the screen and reasons about actions to take based on plain English instructions
- 4Trigger runs from the app, CI/CD pipelines, schedules, or integrations
- 5Every action is traced with screenshots and cached results are tracked for cost optimization
How to Use Caesr
- 1Write test instructions in plain English, no coding required
- 2Import existing CSV/XLS test cases or author in plain text
- 3Pair devices once by installing AgentOS or using Companion Mode
- 4Configure prompts, models, and tool allowlists per agent
- 5Trigger test runs from the app, CI/CD pipelines, or integrations
- 6Review structured, audit-ready reports with traced actions and screenshots
Key Features
- •Computer-use agent that sees, reasons, and acts on any screen
- •Plain English test authoring with no selectors or brittle scripts
- •Support for multiple platforms: macOS, Windows, Linux, Android, iOS, embedded HMI
- •Flexible model routing - Claude, Gemini, OpenAI, or custom providers
- •Intelligent caching that reduces LLM costs by skipping redundant calls
- •Host Mode for full OS access and Companion Mode for devices without software access
- •On-premises and air-gapped deployment options
- •ISO 27001 certification and GDPR compliance
- •Live run streaming with audit-ready HTML reports
- •Versioned system prompts and tool allowlists
Use Cases
- •Automated testing for legacy systems without accessible APIs or UI objects
- •POS device and infotainment system testing across complex workflows
- •Industrial software and hospital system testing without breaking on state changes
- •CI/CD pipeline automation for Android and desktop application release validation
- •Regression testing for mobile and business applications with fragile UI identification
Pros & Cons
Advantages
- •Works on any interface where state lives on the screen (desktop, web, mobile, embedded HMI) - tools like Selenium struggle with this
- •Intelligent caching mechanism that dramatically reduces LLM costs while maintaining audit trails
- •Production-ready with on-prem deployment, ISO 27001 certification, and comprehensive compliance features
- •No lock-in to specific models - supports Claude, Gemini, OpenAI, and custom providers through bring-your-own-model
Disadvantages
- •LLM-based execution may have variable results across runs compared to traditional deterministic automation
- •Requires device pairing or HDMI capture setup which adds infrastructure complexity
- •Primarily focused on test automation rather than broader RPA use cases
Alternatives
See all Caesr alternatives →- Automorphic
- AgentGPT
- Baby AGI
- Selenium
- Appium
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Frequently Asked Questions
What is Caesr?
AskUI is an agentic test automation platform that uses computer-use agents to automate testing across desktop, web, mobile, and embedded HMI interfaces. Instead of relying on DOM queries or fragile UI selectors, agents observe the screen visually and reason about actions to perform, making it capable of testing interfaces that traditional tools cannot reach.
How much does Caesr cost?
Caesr is free to use.
Is Caesr free?
Yes, Caesr offers a free plan you can start with.
What are the best Caesr alternatives?
Popular Caesr alternatives include Automorphic, AgentGPT, Baby AGI.
What is Caesr used for?
Caesr is commonly used for Automated testing for legacy systems without accessible APIs or UI objects, POS device and infotainment system testing across complex workflows, Industrial software and hospital system testing without breaking on state changes.
Does Caesr have an API?
Yes, Caesr offers an API for developers.
What platforms does Caesr support?
Caesr is available on Web, macOS, Windows, Linux, Android, iOS, API.
Information Accuracy
Please note: While we regularly update all tool information including descriptions, features, pricing, and other details, this information may change over time as tools evolve and update their offerings. For the most current and accurate information, we recommend visiting the official website directly. Our goal is to provide you with comprehensive and up-to-date information to help you make informed decisions.