claude-usage

claude-usage.sh

#!/usr/bin/env bash
set -euo pipefail

CREDENTIALS_FILE="${HOME}/.claude/.credentials.json"

if [[ ! -f "$CREDENTIALS_FILE" ]]; then
    echo "Error: credentials file not found: $CREDENTIALS_FILE" >&2
    exit 1
fi

ACCESS_TOKEN=$(jq -r '.claudeAiOauth.accessToken // empty' "$CREDENTIALS_FILE")

if [[ -z "$ACCESS_TOKEN" ]]; then
    echo "Error: no OAuth access token found in $CREDENTIALS_FILE" >&2
    exit 1
fi

curl -sf \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer ${ACCESS_TOKEN}" \
    -H "anthropic-beta: oauth-2025-04-20" \
    -H "User-Agent: claude-code/2.1.34" \
    "https://api.anthropic.com/api/oauth/usage" | jq .