Key error diagnosis

ByteDance (Doubao) | signature invalid

ByteDance (Doubao) returning 401 / signature invalid should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

Provider

ByteDance (Doubao)

China provider route

Error type

signature invalid

medium

Status code

401

signature-invalid

Sample models

UI-TARS 7B

Error route summary

Error type

signature-invalid

medium

Provider

ByteDance (Doubao)

Status code

401

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

What this error usually means

ByteDance (Doubao) returning 401 / signature invalid should not be judged from the message alone. Cross-check key shape, Base URL, balance, model permission, region/IP, and visible model list.

Provider: ByteDance (Doubao)
Error type: signature invalid
Status code: 401

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 ByteDance (Doubao), not just a compatible protocol.
Then list models or run a lightweight probe: check whether models like UI-TARS 7B are visible and return stable evidence.
Finally record 401, error body, latency, egress IP, and reproducibility to separate balance, permission, route, or upstream issues.

Next action

signature invalid 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
UI-TARS 7B

Open key checker

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