生成前估计输入 Token

cat > request-body.json <<'JSON'
{
  "model": "claude-haiku-5-5",
  "messages": [
    {
      "role": "user",
      "content": "用一句中文概括：本周接通测试接口，再检查超时和错误处理。"
    }
  ]
}
JSON

# 执行后核对返回 JSON 的业务状态；HTTP 200 仍可能包含业务错误。
curl --silent --show-error --fail-with-body \
  --request POST \
  --url "https://api.anthropic.com/v1/messages/count_tokens" \
  --header "Authorization: Bearer ${ANTHROPIC_API_KEY}" \
  --header "anthropic-version: 2023-06-01" \
  --header "Content-Type: application/json" \
  --data-binary @request-body.json

import json
import os
import re
import urllib.request
import urllib.error

def expand(value):
    return re.sub(r"\$\{([A-Z][A-Z0-9_]*)\}",
                  lambda match: os.environ[match.group(1)], value)

url = expand("https://api.anthropic.com/v1/messages/count_tokens")
headers = {
    "Authorization": expand("Bearer ${ANTHROPIC_API_KEY}"),
    "anthropic-version": expand("2023-06-01"),
    "Content-Type": expand("application/json"),
}
body = {
    "model": "claude-haiku-5-5",
    "messages": [
        {
            "role": "user",
            "content": "用一句中文概括：本周接通测试接口，再检查超时和错误处理。",
        },
    ],
}
data = json.dumps(body, ensure_ascii=False).encode("utf-8")
request = urllib.request.Request(url, data=data, headers=headers, method="POST")
try:
    with urllib.request.urlopen(request, timeout=30) as response:
        result = json.load(response)
except urllib.error.HTTPError as error:
    print(f"HTTP {error.code}: {error.read().decode('utf-8', errors='replace')}")
    raise SystemExit(1)
print(json.dumps(result, ensure_ascii=False, indent=2))

// Node.js 22+，保存为 request.mjs 后运行 node request.mjs
function expand(value) {
  return value.replace(/\$\{([A-Z][A-Z0-9_]*)\}/g, (_, name) => {
    if (!process.env[name]) throw new Error(`缺少环境变量 ${name}`);
    return process.env[name];
  });
}

const url = expand("https://api.anthropic.com/v1/messages/count_tokens");
const headers = Object.fromEntries(
  Object.entries({
  "Authorization": "Bearer ${ANTHROPIC_API_KEY}",
  "anthropic-version": "2023-06-01",
  "Content-Type": "application/json"
}).map(([key, value]) => [key, expand(value)])
);
const body = {
  "model": "claude-haiku-5-5",
  "messages": [
    {
      "role": "user",
      "content": "用一句中文概括：本周接通测试接口，再检查超时和错误处理。"
    }
  ]
};
const response = await fetch(url, {
  method: "POST",
  headers,
  body: JSON.stringify(body),
  signal: AbortSignal.timeout(30000),
});
const text = await response.text();
if (!response.ok) throw new Error(`HTTP ${response.status}: ${text}`);
const result = JSON.parse(text);
console.log(JSON.stringify(result, null, 2));