Assertible is a no-code API testing and uptime monitoring tool. See its features, pricing from $25/month, pros, cons, and FAQs before you sign up in 2026.
Assertible is an API and web service testing and monitoring platform founded in 2015 by Christopher Reichert and Cody Reichert. It focuses on helping teams verify that their HTTP-based APIs and web services behave correctly and stay available.
Rather than requiring users to write test scripts, Assertible provides a no-code assertion builder for defining expected API behavior, alongside scheduled synthetic monitoring for uptime tracking.
The tool is designed to plug directly into existing development workflows, with GitHub-triggered test runs and Slack or email alerting when something fails.
Assertible's assertion builder lets users validate API response data, status codes, and headers using pre-built, industry-standard patterns without writing custom code, and supports chaining multiple requests into functional, multi-step test cases.
Scheduled synthetic monitoring continuously checks the uptime and correctness of production services, while GitHub integration allows tests to run automatically whenever code is deployed.
Teams can collaborate on shared services and results, with historical result retention that scales by plan for auditing and debugging past test runs.
Assertible offers a free Personal plan supporting up to 2 web services, 10 tests per service, and 1,000 stored results, suitable for individuals or small projects.
Paid plans are billed as a single flat monthly charge per account rather than per user: Standard at $25/month, Startup at $50/month, and Business at $100/month, each increasing the number of services, tests per service, result retention, and team member limits.
All paid plans include a one-month free trial, prorated billing when changing plans, and the ability to cancel at any time.
Assertible is a no-code API and web service testing and monitoring tool that lets teams validate API responses and monitor uptime without writing test scripts.
Yes, Assertible offers a free Personal plan, with paid plans starting at $25 per month for more services, tests, and team members.
No, Assertible uses a no-code assertion builder, though it also supports more advanced, multi-step functional test cases.
Yes, Assertible can automatically trigger test runs when code is pushed to GitHub.
The free Personal plan supports up to 2 web services with 10 tests per service.
Assertible was founded in 2015 by Christopher Reichert and Cody Reichert.