Robert Helewka b5a3aa214b 🐾 fix(mantle): survive Mantle's 20k output ceiling on tool-heavy turns ...

Two new Mantle shims, auto-installed alongside the existing pair:

- Opt out of the fine-grained-tool-streaming beta. Under it, an
  output-token cutoff mid-tool_use ends the stream without
  content_block_stop; fast-agent raises "Streaming completed but tool
  call never finished" and burns its retry ladder against the same
  wall (the observed ~700s Alan revise_workspace_file failures on
  Taurus).

- Clamp default maxTokens to Mantle's observed 20 000-token server
  ceiling, so the model stops gracefully (proper block close +
  stop_reason=max_tokens) instead of being cut off by the gateway.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-08-04 16:49:21 -04:00

8.5 KiB

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