---
title: "Introduction"
description: "InBio developer documentation — short links, QR codes, analytics, and the API."
---

> Documentation Index
> Fetch the complete documentation index at: https://docs.in.bio/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

## Start here

- **Authentication** — Keyless endpoints, API tokens, and scopes — how requests prove who they
are (or don't have to).
- **Rate limits** — Every limit in one place: free endpoints, plan tiers, and how to handle
429 responses.
- **MCP Server** — Connect Claude, Cursor, or any MCP client and let AI agents shorten
links and read analytics.
- **SDKs** — Official libraries for JavaScript, Python, PHP, Ruby, and Go — zero
dependencies, keyless one-liners.
- **Free shorten API** — Shorten a URL with one POST request — no account, no API key.
- **Free QR API** — Styled QR codes from a single GET URL — every design option, no key.
- **Links API** — Create, list, update, bulk-create, and delete short links.
- **Analytics API** — Clicks, uniques, countries, devices, browsers, referrers — bots filtered.
- **Webhooks** — Real-time events with HMAC-signed deliveries.

## The important facts

- **Free plan** — 50 new links and 5,000 tracked clicks per month, custom
  slugs, folders, tags, and QR codes included. No credit card.
- **Links don't break** — account links keep redirecting even past plan
  limits; we never take a working link down over billing.
- **Privacy-first analytics** — raw IP addresses are never stored; visitor
  counts are a privacy-conscious estimate and Do Not Track is respected.
- **Anonymous links** — you can shorten without an account, but unclaimed
  anonymous links are removed after a year of inactivity and can't be edited
  or tracked.

Source: https://docs.in.bio/welcome/index.mdx