Assertible
Assertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correct behavior.
What Assertible is
Assertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correct behavior. Users can define HTTP assertions to validate service behavior, then inspect request details and results. It can run smoke tests automatically after deployment on staging or production environments. API tests can be imported and synced with OpenAPI and Swagger specifications, as well as Postman collections.
Listed integrations include GitHub deployments and status checks, Slack, PagerDuty, and Zapier. Monitoring schedules range from once per minute to once per day, with shorter intervals available on paid plans. Plans limit services, tests per service, retained results, team members, and schedule frequency rather than monthly request totals. The Personal plan is free indefinitely and includes two web services, 10 tests per service, 1,000 results, one to two members, and Standard monitoring with two monitors. Assertible describes its audience as QA professionals, developers, and people who operate web services.
Good
- Validates behavior with HTTP assertions.
- Runs smoke tests after deployments.
- Imports and syncs API test definitions.
- Integrates with GitHub, Slack, PagerDuty, and Zapier.
- Free tier can be used indefinitely.
Watch out
- Free plan is limited to two web services.
- Plans limit tests, results, members, and schedules.
- Shorter monitoring intervals require paid plans.
Who it suits
Assertible suits QA professionals, developers, and others responsible for web services who want HTTP checks and post-deployment smoke tests. Teams using OpenAPI, Swagger, or Postman definitions may find its import and sync options useful.
Verdict
Assertible combines service monitoring, assertions, deployment smoke tests, and API specification imports. Its plan limits cover several account and schedule dimensions, so buyers should check those against their testing needs.
Plans and prices
From Assertible's own pricing page, checked 9 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Personal | Free | 2 web services · 10 tests per service · 1,000 results · 1–2 members · Standard (2 monitors) · /month |
| Standard | $25 a month | 25 web services · 500 tests per service · 5,000 results · 1 member · Upgraded schedule frequency · /month |
| Startup | $50 a month | 25 web services · 500 tests per service · 5,000 results · 10 members · Upgraded schedule frequency · /month |
| Business | $100 a month | 50 web services · 1,000 tests per service · 10,000 results · 20 members · Upgraded schedule frequency · /month |
The facts
Each one read from Assertible's own pages, with the date it was checked.
What it does
- Assertions
- Users can create HTTP assertions to validate service behavior and inspect request details and assertion results.checked 9 Oct 2026
- Deployment testing
- Assertible can automatically run post-deployment smoke tests on staging or production environments.checked 9 Oct 2026
- Integrations
- The documentation lists GitHub deployments and status checks, Slack, PagerDuty, and Zapier as supported integrations.checked 9 Oct 2026
- Monitoring schedules
- The documentation lists monitoring intervals from once per minute to once per day, with the shorter intervals available on paid plans.checked 9 Oct 2026
- Privacy
- Assertible says it may store personal information and files on third-party servers such as Amazon Web Services and does not share personal information with advertisers.checked 9 Oct 2026
- Product
- Assertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correctness.checked 9 Oct 2026
- Specifications
- The product can import and sync API tests with OpenAPI and Swagger specifications and Postman collections.checked 9 Oct 2026
- Support
- The company provides a contact form and directs account users to dashboard profile settings for account changes.checked 9 Oct 2026
- Who it is for
- Assertible describes its audience as QA professionals, developers, and anyone who runs a web service.checked 9 Oct 2026
The company
- Company
- Assertible says it was founded in 2015 and identifies Christopher Reichert as CEO and Cody Reichert as CTO and co-founder.checked 9 Oct 2026
Money
- Plan limits
- The plans page limits services, tests per service, retained results, team members, and schedule frequency, rather than monthly request counts.checked 9 Oct 2026
- Trial
- The plans page offers a one-month free trial for each paid plan and says the free tier can be used forever.checked 9 Oct 2026
Alternatives to Assertible
- 1
Grafana Cloud Application Observability
Free planAndroidiOSWebAPI8.4From $0.03 a month - 2
Dotcom-Monitor
Free planAndroidiOSWebAPI8.3From $13.33 a month - 3
New Relic Synthetics
Free planAndroidiOSWebAPI7.9From $10 a month - 4
Pingdom
AndroidiOSWebAPI7.8From $16.50 a month - 5
OnlineOrNot
Free planWebAPILinuxmacOS7.6From $15 a month - 6
Uptrends
AndroidiOSWebAPI7.4From $42 a month