Key error diagnosis

Meituan | upstream 5xx

Meituan returning 500/502 / upstream 5xx should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

Provider

Meituan

China provider route

Error type

upstream 5xx

medium

Status code

500/502

upstream-5xx

Sample models

LongCat Flash Chat

Error route summary

Error type

upstream-5xx

medium

Provider

Meituan

Status code

500/502

Read-only check. Detection data burns after 5 minutes.

What this error usually means

Meituan returning 500/502 / upstream 5xx should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

Provider: Meituan
Error type: upstream 5xx
Status code: 500/502

How to prove it during checking

Read-only check. Detection data burns after 5 minutes.

Run read-only identity first: confirm whether the key really belongs to Meituan, not just a compatible protocol.
Then list models or run a lightweight probe: check whether models like LongCat Flash Chat are visible and return stable evidence.
Finally record 500/502, error body, latency, egress IP, and reproducibility to separate balance, permission, route, or upstream issues.

Next action

upstream 5xx should not only show failed. The console should return the next move: refill balance, change Base URL, switch model, add permission, change egress IP, hold listing, or monitor.

Read-only check. Detection data burns after 5 minutes.
China provider route
LongCat Flash Chat

Open key checker

Read-only check. Detection data burns after 5 minutes.