---
title: "429 — one of five limits was hit"
url: https://lumean.app/en/developers/docs/errors/429
locale: en
description: "The request was rejected by a limit. The action was not performed, no order was created, and no money was charged. For three of the five sources the body is identical and useless: `{\"success\": false, \"message\": \"Too many attempts. Please wait a moment and try again.\"}`."
generated: 2026-10-17
---

# 429 — one of five limits was hit

- HTTP: `429`

- `Retry-After` header: sometimes

## What happened

The request was rejected by a limit. The action was not performed, no order was created, and no money was charged. For three of the five sources the body is identical and useless: `{"success": false, "message": "Too many attempts. Please wait a moment and try again."}`.

## Why

FIVE independent mechanisms respond with 429, and each one is resolved differently: the key rate limit (request frequency), the key token quota (generation volume), the subscription usage limit, the limit on concurrently active tasks, and the cooldown after a series of content blocks. Blind exponential backoff helps only with the first two; on the concurrency limit and the policy cooldown it just burns time.

## What to do

Triage by two signals, both visible in the response itself. First — whether the body has a `reason`: no `reason` means the key rate limit. Second — whether there is a `Retry-After` header: it comes ONLY with `token_quota_exceeded` and `policy_cooldown_active`. The combination of these two signals distinguishes all five sources unambiguously.

## Next request

`GET /usage` — the subscription limits in effect and current consumption, including the entry with `limit_type: "concurrent"`. The limits of the key itself are not included: they are in the developer section.

## Related

- [Guide: limits and the 429 code](https://lumean.app/en/developers/docs/guide/limits)
- [token_quota_exceeded — generation volume](https://lumean.app/en/developers/docs/errors/token-quota-exceeded)
- [limit_exceeded — subscription usage limit](https://lumean.app/en/developers/docs/errors/limit-exceeded)
- [concurrency_limit_exceeded — task slots](https://lumean.app/en/developers/docs/errors/concurrency-limit-exceeded)
- [policy_cooldown_active — policy cooldown](https://lumean.app/en/developers/docs/errors/policy-cooldown-active)
- [GET /usage](https://lumean.app/en/developers/docs/api/get-usage)
- [Account limits](https://lumean.app/en/limits)
- [My key limits](https://lumean.app/en/developers)

---

- This page in the browser: https://lumean.app/en/developers/docs/errors/429
- Full machine-readable reference: https://api.lumean.app/docs/llm.md