Using a Claude subscription inside third-party apps runs into ToS limits
ZookeepergameOdd6078 · reddit · 2026-10-29
A developer on Reddit asks about building a product that currently calls LLMs via user-supplied API keys, but wants to let users leverage their existing Claude subscription instead, mainly through the Agent SDK. However, Claude's terms of service appear to prohibit this, and they're asking whether anyone has done it anyway. The thread highlights a common compliance gray zone between subscription accounts and API billing for AI product builders.
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