fix(claude-code): display correct context window for Fable running against BYOK endpoint - #2311
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fix(claude-code): display correct context window for Fable running against BYOK endpoint#2311smsunarto wants to merge 1 commit into
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refactor(claude-code): simplify context capacity normalization test(claude-code): cover custom endpoint context reporting
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What was wrong
Claude Agent SDK reports a legacy 200k context window through custom "BYOK" Anthropic endpoints, including Agent Proxy, even when Claude Code OAuth routes Fable 5 with its 1M default. BB trusted that reported value and understated both context-window and token-usage capacity.
What changed
Normalize each reported Claude model's context window against the capacity implied by its model ID. The selected model remains the fallback when Claude omits
modelUsage, and larger SDK values remain authoritative. BumpHOST_DAEMON_PROTOCOL_VERSIONfrom 153 to 154 because this changes the meaning of usage events sent across the daemon boundary.How you verified
pnpm exec turbo run test --filter=bb-plugin-provider-claude-code --force -- src/sdk-extraction.test.ts src/delta-translation.usage.test.ts src/bridge/__tests__/bridge.test.ts— 91 tests passed.pnpm exec turbo run typecheck --filter=bb-plugin-provider-claude-code --force— passed.ANTHROPIC_BASE_URL=http://127.0.0.1:8317, an SDK-reported 200k window, and BB-emitted 1M context-window and token-usage values.recorded/forkemitted no replay events. The same failure reproduces on unmodifiedupstream/main.Fixes # — no linked issue.