---
created: 2026-03-12
tags: [incident, fleet-ops, resolved]
related: ["[[05-Knowledge/Fleet Model Plan]]", "[[02-Fleet/Fleet Map]]"]
---

# 2026-03-05: Anthropic OAuth Block — Emergency Fleet Migration

## Summary
Anthropic blocked Max plan OAuth tokens from being used by third-party tools. All agents using Anthropic models (Rivet, Builder) went down.

## Root Cause
- Anthropic began enforcing Section 3.7 of Consumer Terms (Jan 2026)
- Client fingerprinting deployed to detect non-official clients
- Max plan OAuth tokens rejected by Clawdbot/OpenClaw gateway

## Fix Applied
All 8 agents migrated to non-Anthropic providers:
- OpenRouter, MiniMax, DeepSeek, Moonshot
- Fallback chain: MiniMax M2.5 → Gemini 3.1 Pro Preview (via OpenRouter)

## Lessons
- `claude -p` (headless mode) IS allowed under Max plan — it's the official CLI
- OAuth token extraction by third-party tools is NOT allowed
- [[02-Fleet/Builder]] can use Opus 4.6 through LocalCC bridge (wraps `claude -p`)
- Always have providers from 3+ different companies in the fleet