Assertible review

Assertible ranks tenth because it does a narrower job than the clients above it, but it does that job simply. It is a hosted service that runs API tests on a schedule and after each deployment, so teams do not have to maintain their own runners. Importing a Swagger spec sets up initial APIs, tests and assertions, and results show each part of the HTTP request for debugging. A deployments API triggers tests after every release, and uptime monitoring covers critical endpoints. Pricing is per account with no per-user fees. The free Personal plan includes 2 web services with 10 tests each and can be used indefinitely. Standard at $25 a month raises limits to 25 services and 500 tests, Startup at $50 adds up to 10 members, and Business at $100 allows 50 services and 20 members. There is no desktop client for exploratory testing, so most teams use it next to a tool such as Postman or Bruno.

Who it is for

Small teams that want scheduled API tests and deployment checks without running their own test infrastructure.

Price

Free Personal plan; Standard $25 per month, Startup $50, Business $100, with no per-user fees.

$ 25 /month
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Automated API tests with assertions and JSON Schema validation
• Post-deployment testing through a deployments API
• Uptime and availability monitoring on a schedule
• Import of Swagger API specs to create initial tests and assertions
• Organizations for team collaboration and integrations for alerts

Strengths and weaknesses

• Strength: Flat account pricing with no per-user fees
• Strength: Free plan can be used for as long as you need
• Strength: Every paid plan comes with a one month free trial
• Weakness: Free plan covers 2 web services with 10 tests each
• Weakness: No desktop client for exploratory API work
• Weakness: Card payment only, with no PayPal or purchase orders

Key facts

• Free plan: 2 web services, 10 tests per service
• Plans: Personal, Standard, Startup and Business
• Members: 1 on Standard, 10 on Startup, 20 on Business
• Free trial: 1 month on paid plans

Where it ranks

Assertible is No. 10 in our Best API Testing Tools verdict.