How many API bugs are you missing?

Focus on delivering value with your API. Not debugging it.

Our Open Source core is trusted by industry leaders

Kiwi.com
Netflix
SAP
RedHat
IBM

Level up your API reliability with Schemathesis API fuzzing in no time

Run thousands of test scenarios based on your API specification and ensure your API works as expected.

Application crashes

Learn what payloads make your API crash, corrupt the database or hang forever.

Up-to-date API documentation

Never worry that your API consumers will use an incorrect specification or outdated payload example.

Instant debugging

Get a detailed failure report with a single cURL command to reproduce the problem immediately.

Integrate into your CI

Easily add API fuzzing into your pipeline and reveal whether you can deploy safely.

Schemathesis is the best tool for fuzz testing of REST API on the market. We are at Red Hat use it for examining our applications in functional and integrations testing levels.

Dmitry Misharov, Principal Quality Engineer at RedHat
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Find bugs in seconds

Get meaningful and actionable results without spending time on writing tests. Schemathesis automatically parses the API schema and generates test cases that thoroughly verify your API behavior.

issue-conformance

Keep your API up to date

Syncing your API with the specification and tests is time-consuming and error-prone. Schemathesis reads your API schema each time and updates the tests, so you can focus on building your product instead.

run-results

Test complex workflows. Automatically

Schemathesis automatically infers relations between different API operations and runs thousands of API call sequences against your API. Schemathesis runs an unexpected sequence of API calls and finds a crash before your users do.

stateful-history

What is Schemathesis.io?

Schemathesis.io is an API fuzzing platform that helps you to focus on delivering value with your API instead of debugging it

Continuous testing

Combine Schemathesis.io with your CI solution like Github Actions, Jenkins or Gitlab CI.

Team collaboration

Collaborate across your team to share, debug and resolve issues faster.

Flexible integration

Run tests on your infrastructure or use our optimized cloud platform.

Regressions tracking

Observe how your API works over time by tracking down root causes.

Give it an API schema, and it will generate thousands of test cases to ensure your API works as expected.

Pricing

Free

0 /mo

View results of local API testing

FeatureIncluded
# APIs to manage1
# of users1
Run tests withCLI only
SaaS API testing worker timeNo
Data retention30 days
IntegrationsNo
Schemathesis Engine
FeatureIncluded
Data generationDefault
Stateful testingDefault
API coverageDefault
Checks
FeatureIncluded
ConformanceDefault
SecurityNo
PerformanceNo
Static analysisNo
API enhancement tipsNo

Professional

14 /mo

API testing as a service

FeatureIncluded
# APIs to manageUnlimited
# of users1
Run tests withCLI or SaaS
SaaS API testing worker timeUp to 1000 minutes/month
Data retention90 days
IntegrationsCI/CD, Sentry, Jira, GitHub, Slack (coming soon)
Schemathesis Engine
FeatureIncluded
Data generationAdvanced
Stateful testingAutomatic
API coverageAdvanced
Checks
FeatureIncluded
ConformanceAdvanced
SecurityYes
PerformanceComing soon
Static analysisComing soon
API enhancement tipsComing soon
Find your next API server crash
Full order refund if you are ever unsatisfied

Enterprise

Need more? We got it covered

Frequently asked questions