Here's the instructions on how to get an older version of OpenClaw to use Claude Fable 5 using API key properly - paste this into your Claude Code instance operating on your openclaw.json. Apply the fable-5 adaptive-thinking hotfix to OpenClaw's dist. Context: On 2026-06-10 Anthropic flipped claude-fable-5 to require adaptive-thinking params (thinking.type:"adaptive" + output_config.effort) and now rejects the legacy thinking.type:"enabled"/"disabled" style. OpenClaw hardcodes its…