Vibe Coding
Claude Code 2.1.247 Stops Subagents From Dying on a First-Call Model 404
The 2.1.247 release (published 2026-08-27 per Releasebot) fixes subagents that died outright when their first API call returned a model 404; they now fall back through the session's model chain, and the error handed back to the parent includes error type, status, request id, and the model that failed. For anyone dispatching fleets of subagents against a pinned or region-specific model id, this converts a silent whole-agent loss into a recoverable retry with a diagnosable message. The same release also fixes background subagents and hooks that printed megabytes of error output being able to overflow the conversation and wedge a session on 'Prompt is too long'.
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