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Key error diagnosis

ByteDance Seed | token format error

ByteDance Seed returning 400/401 / token format error 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 Seed
China provider route
Error type
token format error
medium
Status code
400/401
token-format-error
Sample models
4
Seed 1.6 · Seed 1.6 Flash · Seed-2.0-Lite
Error route summary
Error type
token-format-error
medium
Provider
ByteDance Seed
Status code
400/401
Read-only check. Detection data burns after 5 minutes.
Read-only check. Detection data burns after 5 minutes.

What this error usually means

ByteDance Seed returning 400/401 / token format error 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 Seed
  • Error type: token format error
  • Status code: 400/401

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 Seed, not just a compatible protocol.
  • Then list models or run a lightweight probe: check whether models like Seed 1.6 · Seed 1.6 Flash · Seed-2.0-Lite are visible and return stable evidence.
  • Finally record 400/401, error body, latency, egress IP, and reproducibility to separate balance, permission, route, or upstream issues.

Next action

token format error 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
  • Seed 1.6 · Seed 1.6 Flash · Seed-2.0-Lite