Anthropic bans using Claude Pro/Max credentials for third-party apps
The policy targets developers routing requests through consumer plan logins, enforcing API key use.
Deep Dive
Anthropic updated its legal docs to explicitly ban using OAuth tokens from Claude Free, Pro, or Max accounts in third-party products or the Agent SDK. Developers must now use official API keys from Claude Console or cloud providers. This prevents apps from offering Claude.ai login or routing user requests through cheaper subscription credentials, reserving those tokens for direct use on Claude's own platforms.
Why It Matters
Developers must migrate to paid API tiers, increasing costs but clarifying commercial use boundaries.