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Assertible

assertible.com

From $25/mo Free plan WebAPI
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Spec score 8.2 #11 of 43 in Synthetic Monitoring

What it is

Assertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correct behavior. Users create HTTP assertions, inspect request details, and review assertion results. The service can run smoke tests automatically after deployments to staging or production environments. API tests can be imported and synchronized with OpenAPI or Swagger specifications and Postman collections. Integrations listed in its documentation 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 counts. The Personal plan costs nothing and includes two web services, 10 tests per service, 1,000 results, one to two members, and Standard monitoring with two monitors. Paid plans are Standard at $25 a month, Startup at $50 a month, and Business at $100 a month; each includes a one-month trial.

Spec sheet

Product
Assertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correctness.Read 9 Oct 2026 · assertible.com
Trial
The plans page offers a one-month free trial for each paid plan and says the free tier can be used forever.Read 9 Oct 2026 · assertible.com
Integrations
The documentation lists GitHub deployments and status checks, Slack, PagerDuty, and Zapier as supported integrations.Read 9 Oct 2026 · assertible.com
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.Read 9 Oct 2026 · assertible.com
Support
The company provides a contact form and directs account users to dashboard profile settings for account changes.Read 9 Oct 2026 · assertible.com
Company
Assertible says it was founded in 2015 and identifies Christopher Reichert as CEO and Cody Reichert as CTO and co-founder.Read 9 Oct 2026 · assertible.com
Assertions
Users can create HTTP assertions to validate service behavior and inspect request details and assertion results.Read 9 Oct 2026 · assertible.com
Deployment testing
Assertible can automatically run post-deployment smoke tests on staging or production environments.Read 9 Oct 2026 · assertible.com
Monitoring schedules
The documentation lists monitoring intervals from once per minute to once per day, with the shorter intervals available on paid plans.Read 9 Oct 2026 · assertible.com
Plan limits
The plans page limits services, tests per service, retained results, team members, and schedule frequency, rather than monthly request counts.Read 9 Oct 2026 · assertible.com
Specifications
The product can import and sync API tests with OpenAPI and Swagger specifications and Postman collections.Read 9 Oct 2026 · assertible.com
Who it is for
Assertible describes its audience as QA professionals, developers, and anyone who runs a web service.Read 9 Oct 2026 · assertible.com

Plans and prices

Personal Free /month 2 web services · 10 tests per service · 1,000 results · 1–2 members · Standard (2 monitors) Read 9 Oct 2026 · assertible.com
Standard $25 a month /month 25 web services · 500 tests per service · 5,000 results · 1 member · Upgraded schedule frequency Read 9 Oct 2026 · assertible.com
Startup $50 a month /month 25 web services · 500 tests per service · 5,000 results · 10 members · Upgraded schedule frequency Read 9 Oct 2026 · assertible.com
Business $100 a month /month 50 web services · 1,000 tests per service · 10,000 results · 20 members · Upgraded schedule frequency Read 9 Oct 2026 · assertible.com

Every Assertible plan and price →

Strong points and limits

Strong points

  • Free tier can be used indefinitely
  • Post-deployment smoke tests run automatically
  • OpenAPI, Swagger, and Postman synchronization
  • GitHub, Slack, PagerDuty, and Zapier integrations
  • Schedules range from one minute to one day

Limits

  • Free Personal plan has two web services
  • Shorter monitoring intervals require paid plans
  • Plans cap tests, results, members, and services
  • Paid plans start at $25 a month

Who it suits

Assertible is aimed at QA professionals, developers, and people who operate web services. It suits teams that want scheduled API checks and deployment smoke tests.

Verdict

Assertible provides API and HTTP-service checks with deployment testing, specification imports, and scheduled monitoring. Its plan limits and paid-only shorter intervals matter when sizing a monitoring setup.

Where Specifiction places it

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