#!/bin/sh
# SessionStart hook: tell the agent when the session runs against the self-hosted
# vLLM gateway, where model aliases (sonnet, opus, haiku) do not exist.
# Prints nothing on Anthropic/Vertex so the default rules apply.
case "${ANTHROPIC_BASE_URL:-}" in
  *vllm*|*seibert.tools*)
    model="${ANTHROPIC_MODEL:-${CLAUDE_CODE_SUBAGENT_MODEL:-the configured model}}"
    printf '{"hookSpecificOutput":{"hookEventName":"SessionStart","additionalContext":"Self-hosted backend (%s): only %s is available. Never pass a model override to Agent calls; all subagents inherit this model."}}\n' "$ANTHROPIC_BASE_URL" "$model"
    ;;
esac
exit 0