If you’ve been using OpenClaw with a Claude Pro or Max subscription via OAuth and suddenly started seeing 403 permission_error responses, you’re not alone — and the cause is not a bug you can wait out. Anthropic is actively and deliberately revoking OAuth token access for Claude Pro and Max subscriptions in third-party applications. OpenClaw is among the affected platforms.

This isn’t just a version regression or a temporary outage. Multiple independent sources — a Medium post documenting a full migration away from Claude, an analysis on daveswift.com, and a GitHub commit trail — all confirm this is a deliberate policy shift.

What’s Actually Happening

OpenClaw’s GitHub issue tracker surfaced the first community reports around February 26, 2026 (issue #31306). Users on the latest v2026.2.26 release began reporting OAuth authentication failures with 403 status codes from Anthropic’s servers.

The error message pattern: permission_error — not a rate limit, not a network failure, not an expired token. A hard deny.

Community investigation quickly traced it upstream. From jacopocastellano.com: “Anthropic cut off Max license access for OpenClaw.” From daveswift.com: “OAuth support in third-party apps is going away” — citing a GitHub commit showing Anthropic server-side changes. A Medium post from rentierdigital (published ~19 hours before this article) documented a complete migration path, abandoning Claude entirely in favor of Kimi K2.5 on a $15/month VPS.

The mechanism: Anthropic’s Pro and Max subscription tiers historically allowed OAuth-based token grants so that third-party apps could act on behalf of a subscriber’s account. Anthropic appears to be revoking that capability, likely to enforce tighter control over how subscription tokens are used and to push third-party developers toward paid API access.

Who Is Affected

  • Claude Pro subscribers using OpenClaw via OAuth login: affected
  • Claude Max subscribers using OpenClaw via OAuth login: affected
  • Direct API key users (Anthropic console.anthropic.com API keys): not affected
  • Users on other model providers (OpenAI, Kimi, MiniMax, etc.): not affected

If you authenticated OpenClaw with your Claude.ai account credentials rather than an API key, you’re using OAuth and will hit this issue.

Why This Is a Bigger Deal Than a Bug

The practical implications extend beyond a single error code:

Cost structure shift: Claude Pro is $20/month with generous usage. Direct API access via Anthropic’s API is priced per token — for heavy agentic workloads that burn through context constantly, costs can scale significantly. Many users chose OpenClaw + OAuth specifically to avoid per-token pricing for personal agent use.

Policy precedent: If Anthropic is willing to revoke OAuth access for one platform, it can do so for others. Any third-party tool built on top of Claude subscription credentials is now operating on borrowed time.

Timing: This is happening on the same day as a major Claude consumer-facing outage. Whether the infrastructure changes related to OAuth revocation contributed to today’s broader service disruption is unknown, but the overlap is notable.

What You Should Do

The path forward is clear, if not painless. See our step-by-step guide: What to Do Now That Anthropic Is Blocking Claude OAuth in OpenClaw.

The short version:

  1. Get a direct Anthropic API key at console.anthropic.com (pay-per-token, no OAuth required)
  2. Or migrate to an alternative provider — Kimi K2.5 (moonshot-v1-128k), MiniMax, or any OpenAI-compatible endpoint
  3. Update OpenClaw’s provider settings to use an API key instead of an OAuth session
  4. Monitor GitHub issue #31306 for any official OpenClaw response or workarounds

The community reaction has been sharp but constructive. Several users have posted working config.yml snippets for alternative providers, and there’s active discussion about whether OpenClaw should remove OAuth-only auth paths entirely to avoid future disruption.

Sources

  1. OpenClaw GitHub — Issue #31306: OAuth 403 permission_error (opened March 2, 2026)
  2. Medium (rentierdigital) — Full migration guide away from Claude OAuth (published ~19h before article)
  3. daveswift.com — Analysis: “OAuth support in third-party apps is going away” (March 2, 2026)
  4. jacopocastellano.com — “Anthropic cut off Max license access for OpenClaw” (March 2, 2026)

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