Ultimate Guide for Assessment API Integration
This guide talks about integrating with assessment APIs, bi-directional sync of data between assessment tools and other applications. And relevant apis and applications for different use cases
Unified Assessment API
Unified Assessment API
One Unified Assessment API to integrate with Perspect AI, Predictive Index, and all your customers’ favorite Assessment tools.
What is a Unified Assessment API?
Assessment platforms each store data differently, with their own authentication and schemas. A Unified Assessment API standardizes these into one interface, while Knit manages translation, rate limiting, retries, and sync management underneath.
2 Assessment apps you can integrate with today
Perspect AI
Perspect AI integrates via Knit's Unified Assessment API — no per-platform maintenance.
Predictive Index
Power Predictive Index API integration via Knit's Unified Assessment API — one schema, one integration.
Don't see your app here?
Describe it to our AI Integrations Agent and get a working integration instantly — no waiting on our roadmap.
Meet the Integrations AgentWhy Knit for Assessment integrations
Extensive webhook support
Real-time sync without constant polling — get notified the moment Assessment data changes.
Scalable infra
Sync thousands of Assessment records in minutes, not hours.
Add a missing app in days
AI-powered connector building means a missing Assessment platform isn't a months-long wait.
Unified Assessment API vs. building it yourself
Building it yourself
- A separate integration for every Assessment platform you support
- Different schema, auth, and pagination per platform
- You build and maintain OAuth for each platform
- Poll each API on your own schedule
- Engineering effort grows with every new platform
- Weeks to months per platform, per engineer
With Knit
- One Unified Assessment API covers every platform you support
- One normalized schema across every platform
- Embedded Auth handles OAuth, storage, and refresh for you
- Extensive webhook support for real-time sync
- Describe a missing app to the Integrations Agent and get it built instantly
- Live in days, not months
Customer Stories
See how leading technology firms are scaling their operations
Amazing Product With Exceptional Support from the team. By using Knit we managed to speed up our development by orders of magnitude.
H
Huynh H
Developer, Multiplier
A brilliant tool to let you seamlessly integrate with many different systems. It is very easy to integrate with and customer support is next level.
J
Jayesh
Co-Founder, Scrut
Seamless integration experience. Well-documented, self-explanatory APIs, and excellent service and support.
P
Poorvi
Product Manager, Onsurity
Easy to integrate. Knit's dashboard is intuitive for setting up and testing integrations, and the sandbox is extremely useful during development.
A
Aditya
Product Lead, RazorpayXPayroll
Knit shipped a brand-new Timesheet API in a week and handed us a ready-to-use NetSuite sandbox. That velocity is priceless when you're running payroll in 40+ countries.
R
Rohit Singh
GM, Payoneer Workforce Management
#1 in Ease of Integrations
4.9 out of 5 stars on G2
FAQ
Common questions about the Unified Assessment API
Which Assessment systems does Knit support?
2 Assessment platforms today — including Perspect AI, Predictive Index and more. Missing one you need? Knit's AI-assisted connector-build process typically adds a new one within days.
Does the Unified Assessment API support both reading and writing data?
Yes. It supports both reads and writes, so you can build bi-directional sync use cases — not just pull Assessment data, but push updates back to the source app.
How does authentication work across Assessment platforms?
Knit provides an embedded Auth component (white-labeling available on higher tiers) that handles OAuth, credential storage, and refresh — your customers authorize once through Knit, and you never touch raw credentials.
What is the timeline for adding a missing Assessment connector?
Typically days, not months — the same AI-based connector-build tooling that lets us maintain the 2 Assessment connectors already live.
Do you store Assessment data or customer PII?
No. Knit acts as a stateless passthrough — data is processed on our application server and sent directly to your webhooks, without being stored on Knit's servers.
What is the pricing model, and is there a free trial?
You choose the model that fits your business — pricing based on integrated accounts, or based on API call volume. Every plan includes a 30-day free trial before billing starts.
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