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SPECIFICTION
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Assertible vs Smithy

Assertible

assertible.com

Smithy

smithy.io

Side by side

FigureAssertibleSmithy
Price from$25/mo—
Free planYes—
Free trialYes—
Open source——
WebYes—
Windows—Yes
macOS—Yes
Linux—Yes
APIYes—
Plans published40
Spec score · API Design Tools8.2 (#11)7.1 (#24)
IntegrationsThe documentation lists GitHub deployments and status checks, Slack, PagerDuty, and Zapier as supported integrations.Smithy build configurations can load extensions and code generators through Maven dependencies and plugins, including AWS-specific dependencies and an OpenAPI generator.
ProductAssertible tests and monitors APIs, websites, and other HTTP services for uptime, availability, and correctness.Smithy is an open-source, protocol-agnostic interface definition language and toolset for defining APIs and generating clients, servers, and documentation.
SupportThe company provides a contact form and directs account users to dashboard profile settings for account changes.The CLI guide directs users with suggestions or issues to create an issue in the Smithy GitHub repository.

Plans

Assertible

  • PersonalFree
  • Standard$25 a month
  • Startup$50 a month
  • Business$100 a month

Assertible pricing →

Smithy

No plans published.

Smithy pricing →

In their own words

Assertible

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.

Visit assertible.com

Smithy

Smithy has no write-up on Specifiction yet; its figures are above.

Visit smithy.io