Scoped keys
Give each integration only the access it needs (links, QR codes, analytics), and rotate or revoke keys without downtime.
Developer API
A link API for your product
Create short links and QR codes from your app, CRM or automations, and read their analytics — with a simple, predictable REST API.
Safe retries
Send an Idempotency-Key and a retried request returns the original result instead of creating a duplicate.
Clear limits
Plans include a monthly allowance; credit packs add more. Only successful create and update calls are counted.
Documented errors
Every error has a stable code and a message written for people.
How it works
- 1Create an API key in your dashboard
- 2Call POST /api/v1/links
- 3Track usage under Developers
Good to know
API access is included from the Business plan. Redirect visits never use API credits.
Works well with
Short links
Shorten long URLs into clean fy9.in links. Custom aliases, editable destinations, expiry, password protection and click analytics.
QR codes
Create static and dynamic QR codes with your colours and logo. Download PNG, SVG and print-ready files, and update where they go.
Analytics
Clicks over time, estimated unique visitors, devices, browsers, approximate locations, referrers and campaigns — with honest definitions.