Summary

Bug Description

When the default model and first fallback provider both hit rate_limit cooldown, the fallback logic stops after trying only 2 models instead of continuing through all 17 configured fallback models.

Environment

• OpenClaw version: 2026.2.23
• Node: v22.22.0
• OS: Ubuntu 24.04

Configuration

{
“agents.defaults.model”: {
"primary": "qwen-portal/coder-model",
"fallbacks": [
"opencode/glm-5-free",
"opencode/kimi-k2.5-free",
"opencode/minimax-m2.5-free",
"opencode/gpt-5-nano",
"nvidia-nim/z-ai/glm5",
"nvidia-nim/qwen/qwen3.5-397b-a17b",
"nvidia-nim/moonshotai/kimi-k2.5",
"nvidia-nim/minimaxai/minimax-m2.1",
"nvidia-nim/z-ai/glm4.7",
"xfyun/xopglm47blth2",
"xfyun/xopglmv47flash",
"xfyun/xopglm5",
"xfyun/xopkimik25",
"xfyun/xminimaxm2",
"xfyun/MiniMax-M2.5",
"qwen-portal/vision-model"
]
}
}

Steps to Reproduce

1. Configure 17 fallback models across multiple providers (qwen-portal, opencode, nvidia-nim, xfyun)
2. Wait for qwen-portal and opencode to hit rate_limit cooldown
3. Send a message to trigger model fallback ## Expected Behavior System should skip cooled-down providers and continue trying remaining fallback models (nvidia-nim, xfyun).

Actual Behavior

Error after trying only 2 models:
All models failed (2): opencode/glm-5-free: Provider opencode is in cooldown | qwen-portal/coder-model: Provider qwen-portal is in cooldownThe fallback logic does NOT continue to nvidia-nim or xfyun models.

Logs

All models failed (2): opencode/glm-5-free: Provider opencode is in cooldown (all profiles unavailable) (rate_limit) | qwen-portal/coder-model: Provider qwen-portal is in cooldown (all profiles unavailable) (rate_limit)

Impact

Users experience extended downtime (30-60 minutes) waiting for cooldown to expire, even though other providers (nvidia-nim, xfyun) are available and healthy.

Suggested

Fix The fallback logic should:

1. Skip providers that are in cooldown state
2. Continue through the entire fallbacks list until finding a working model
3. Only fail after all fallbacks have been exhausted