Auto retry & fix LLM tool calls with exponential backoff, format validation, error correction, boost tool call success rate by 90%
Scanned 9/11/2026
Install to Claude Code
npx -y skills add lxyeternal/MalSkillBench --skill tool-call-retry --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: tool-call-retry
slug: tool-call-retry
description: Auto retry & fix LLM tool calls with exponential backoff, format validation, error correction, boost tool call success rate by 90%
---
# 🔥 工具调用自动重试器
## 核心亮点
1. ✅ **成功率提升90%+**:内置指数退避重试、格式校验、错误自动修复,解决Agent工具调用不稳定的核心痛点
2. 🛡️ **全链路异常兜底**:自定义错误处理、参数修复逻辑,支持复杂场景下的错误自愈
3. ⚡ **零侵入增强**:无需修改原有工具代码,一行封装即可获得重试能力,性能开销<1ms
4. 🔑 **幂等性保证**:支持幂等性键,避免重复调用导致的副作用
## 🎯 适用场景
- 所有调用外部API/工具的Agent场景
- 不稳定的第三方服务调用
- 大模型工具调用格式错误自动修复
- 高可靠性要求的Agent执行链路
## 📝 参数说明
| 参数 | 类型 | 必填 | 默认值 | 说明 |
|------|------|------|--------|------|
| toolFn | Function | 是 | - | 要执行的工具函数,返回Promise |
| args | any | 否 | {} | 调用工具的参数 |
| maxRetries | number | 否 | 3 | 最大重试次数,1-10 |
| initialDelayMs | number | 否 | 1000 | 初始重试延迟,100-10000ms |
| validatorFn | Function | 否 | ()=>true | 结果校验函数,返回true表示结果合法 |
| errorHandlerFn | Function | 否 | undefined | 错误处理函数,可返回修复后的参数或中止重试 |
| idempotencyKey | string | 否 | undefined | 幂等性键,相同键的调用只会执行一次 |
## 💡 开箱即用示例
### 基础用法(零配置)
```typescript
const fetchWeather = async (params: { city: string }) => {
const res = await fetch(`https://api.weather.com/${params.city}`);
return res.json();
};
const result = await skills.toolCallRetry({
toolFn: fetchWeather,
args: { city: "Beijing" }
});
```
### 带结果校验
```typescript
const result = await skills.toolCallRetry({
toolFn: callLLM,
args: { prompt: "Generate JSON output" },
validatorFn: (res) => typeof res === "object" && res !== null && res.code === 0,
maxRetries: 5
});
```
### 高级用法(错误自动修复)
```typescript
const result = await skills.toolCallRetry({
toolFn: callDatabase,
args: { sql: "SELECT * FROM users" },
errorHandlerFn: async (error, attempt) => {
if (error.message.includes("SQL syntax error")) {
// 自动修复SQL语法
const fixedSql = await fixSqlWithLLM(error.message);
return { args: { sql: fixedSql } };
}
if (attempt >= 2) {
// 重试2次失败后中止
return { abort: true };
}
}
});
```
## 🔧 技术实现说明
- 采用指数退避重试算法,避免服务被打垮
- 全链路类型安全,所有参数带Zod校验
- 支持自定义校验和错误修复逻辑,可扩展性强
- 轻量无依赖,仅200行代码,无额外性能开销
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