glm-hyper-claude

#!/usr/bin/env bash
# Claude Code -> Charm Hyper (GLM-5.2) via a local litellm proxy.
#
# Hyper's Anthropic /v1/messages endpoint rejects `{"role":"system"}` inside
# the messages array (400 unsupported message role: system), which Claude Code
# emits. Hyper's OpenAI /v1/chat/completions endpoint accepts it. litellm
# translates Anthropic Messages -> OpenAI Chat Completions, moving system into
# the OpenAI messages array. So we run litellm locally on an ephemeral port,
# point the Claude CLI at it, and tear it down when claude exits.

set -euo pipefail

HYPER_API_KEY="sk-hyper-..."
HYPER_API_BASE="https://hyper.charm.land/v1"
LITELLM_MASTER_KEY="sk-litellm-local"

CONFIG="$(mktemp -t glm-hyper-claude-litellm.XXXXXX.yaml)"
trap 'rm -f "$CONFIG"' EXIT

cat > "$CONFIG" <<EOF
general_settings:
  master_key: "${LITELLM_MASTER_KEY}"

model_list:
  - model_name: "glm-5.2"
    litellm_params:
      model: "openai/glm-5.2"
      api_base: "${HYPER_API_BASE}"
      api_key: "${HYPER_API_KEY}"
      input_cost_per_token: 0.0
      output_cost_per_token: 0.0
  - model_name: "deepseek-v4-flash"
    litellm_params:
      model: "openai/deepseek-v4-flash"
      api_base: "${HYPER_API_BASE}"
      api_key: "${HYPER_API_KEY}"
      input_cost_per_token: 0.0
      output_cost_per_token: 0.0
EOF

# Single OS bind for an ephemeral port (no listen-close-rebind race).
PORT="$(python3 -c 'import socket; s=socket.socket(); s.bind(("127.0.0.1",0)); print(s.getsockname()[1]); s.close()')"

LOG="$(mktemp -t glm-hyper-claude-litellm.XXXXXX.log)"
LITELLM_PID=""

cleanup() {
  if [[ -n "${LITELLM_PID:-}" ]] && kill -0 "${LITELLM_PID}" 2>/dev/null; then
    kill "${LITELLM_PID}" 2>/dev/null || true
    wait "${LITELLM_PID}" 2>/dev/null || true
  fi
  rm -f "$LOG"
}
trap cleanup EXIT INT TERM

PYTHONUTF8=1 uv tool run --python 3.13 --with 'litellm[proxy]' litellm \
  --config "$CONFIG" --port "$PORT" >"$LOG" 2>&1 &
LITELLM_PID=$!

HEALTHY=0
for _ in $(seq 1 120); do
  # Bail early if litellm already exited
  if ! kill -0 "${LITELLM_PID}" 2>/dev/null; then
    echo "glm-hyper-claude: litellm process (PID ${LITELLM_PID}) exited prematurely. Log:" >&2
    cat "$LOG" >&2
    exit 1
  fi
  if curl -fsS -o /dev/null "http://127.0.0.1:${PORT}/health/liveness" 2>/dev/null; then
    HEALTHY=1
    break
  fi
  sleep 0.5
done

if [[ "${HEALTHY}" -eq 0 ]]; then
  echo "glm-hyper-claude: litellm proxy failed to become healthy after 60s. Log:" >&2
  cat "$LOG" >&2
  exit 1
fi

export ANTHROPIC_MODEL="glm-5.2"
export ANTHROPIC_DEFAULT_OPUS_MODEL="glm-5.2"
export ANTHROPIC_DEFAULT_SONNET_MODEL="glm-5.2"
export ANTHROPIC_DEFAULT_HAIKU_MODEL="deepseek-v4-flash"
export CLAUDE_CODE_SUBAGENT_MODEL="glm-5.2"
export CLAUDE_CODE_EFFORT_LEVEL="high"
export ANTHROPIC_BASE_URL="http://127.0.0.1:${PORT}"
export ANTHROPIC_API_KEY="${LITELLM_MASTER_KEY}"

claude --allow-dangerously-skip-permissions --dangerously-skip-permissions "$@"