---
title: "RateLimit"
description: "requests allowed per window for one token, and per client address for the sign-in routes; over it the answer is 429 with Retry-After"
section: concepts
address: /concepts/ratelimit
contract: 0476e35e6e275db5
---

# RateLimit

requests allowed per window for one token, and per client address for the sign-in routes; over it the answer is 429 with Retry-After

[figure: RateLimit is a parameter at platform scope. The drawing shows its fields and the objects that they point at.]

| property | value |
|---|---|
| kind | parameter |
| scope | platform |
| key | the token or the client address |
| store | postgres |
| family | network |



## Fields


| field | type | required | note |
|---|---|---|---|
| `subject` | `one of token \| client-address` | yes |  |
| `requests` | `count` | yes |  |
| `window` | `duration` | yes |  |
| `burst` | `count` | no |  |



## Routes that use it
No route takes or returns RateLimit directly. The record holds it, and the objects that point at it reach it.