API Pentesting
API Penetration Testing for REST and GraphQL
APIs carry your most valuable data. We test every endpoint for broken authorization, authentication flaws, excessive data exposure, and abuse, then help your developers close the gaps.
API Pentesting at a glance
API penetration testing is a security test of your REST or GraphQL APIs in which OpsInfinity testers check whether any user can read or change data they should not, bypass authentication, or abuse endpoints.
- Who it is for
- SaaS platforms, fintech and partner integrations, and mobile app backends that expose APIs to customers or third parties
- Starting price
- From ₹44,999 (excl. GST). See all pricing
- Typical timeline
- 5–10 days for a single API; 10–15 days when combined with a web application
Why choose OpsInfinity
The most common serious API flaw is broken object-level authorization: changing an ID in a request returns someone else's data. Scanners rarely catch it, because spotting it requires understanding who should see what.
- Testing aligned to the OWASP API Security Top 10
- Authorization checks across every role and tenant
- Coverage of REST, GraphQL, and webhook endpoints
- Findings developers can reproduce from a single request
What we deliver
Clear, practical outputs your team can act on — not vague promises.
Our process
A structured approach from discovery through delivery and support.
Scope
We collect your API documentation or collection, test accounts, and environments.
Map
We list every endpoint, method, and role, including undocumented ones we discover.
Attack
We test authorization, authentication, input handling, data exposure, and rate limits.
Report and retest
We report with request-level evidence, support fixes, and retest them.
Frequently asked questions
What do you need to start an API penetration test?
An OpenAPI or Swagger file, a Postman collection, or GraphQL schema access, plus test accounts for at least two users in each role so we can check whether one user can reach another's data.
Do you test GraphQL APIs?
GraphQL is covered, including introspection exposure, query depth and cost abuse, and field-level authorization, alongside standard REST testing.
Can API testing be combined with web app testing?
Web application and API testing are often combined in one engagement, which typically takes 10–15 days and is covered by the Growth VAPT plan.
Get a API Pentesting quote in 24 hours
Tell us what you need. We reply within one business day with scope, timeline, and a fixed quote.
- Registered as OpsInfinity Technologies LLP
- Prices published in INR, excl. GST
- Reply within one business day
- NDA available on request