Skills Artificial Intelligence Tool Use Reliability Guard

Tool Use Reliability Guard

v20260316
tool-use-guardian
Intelligent reliability wrapper that monitors agent tool calls, retries failures, heals malformed responses, and checkpoint-resumes interrupted chains so your workflows recover automatically without hand-coded retry logic.
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Overview

Tool Use Guardian

Overview

The reliability wrapper every AI agent needs. Monitors tool calls, auto-retries failures, fixes truncated responses, and learns which tools are unreliable — so you never lose your chain of thought.

Free forever. Built by the Genesis Agent Marketplace.

Install

npx skills add christopherlhammer11-ai/tool-use-guardian

When to Use This Skill

  • Use when tool calls return truncated or malformed JSON
  • Use when APIs timeout or rate-limit your agent mid-task
  • Use when a multi-step chain breaks partway through
  • Use when you need automatic retry logic without writing it yourself
  • Use for any agent workflow that depends on external tool reliability

How It Works

Step 1: Pre-Call Validation

Before every tool call, Guardian validates:

  • Required parameters are present and correctly typed
  • The tool is not marked as "unreliable" from previous failures
  • Request size is within known limits

Step 2: Failure Classification

When a tool call fails, Guardian classifies the failure into one of 9 categories:

Failure Type Recovery Action
Truncated JSON Re-fetch with pagination or smaller chunks
API Timeout Retry once with simpler request, then decompose
Rate Limit (429) Exponential backoff, max 3 retries
Auth Expired Flag for user intervention
Mid-chain Break Resume from last successful checkpoint
Error-as-200 Detect {"error": "..."} disguised as success
Schema Mismatch Attempt auto-coercion, warn if lossy
Network Failure Retry with jitter, max 2 attempts
Unknown Error Log full context, escalate to user

Step 3: Chain Protection

For multi-step tool chains, Guardian maintains checkpoints. If step 4 of 7 fails, it resumes from step 4 — never restarts from scratch.

Step 4: Learning

Guardian tracks failure patterns per tool. After 3+ failures of the same type, it marks the tool as unreliable and suggests alternatives.

Best Practices

  • ✅ Let Guardian wrap all external tool calls automatically
  • ✅ Review Guardian's reliability reports to identify flaky tools
  • ✅ Use checkpoint recovery for long chains
  • ❌ Don't disable retry logic for rate-limited APIs
  • ❌ Don't ignore repeated failure warnings

Related Skills

  • @recallmax - Long-context memory enhancement (also free from Genesis Marketplace)

Links

Info
Name tool-use-guardian
Version v20260316
Size 3.02KB
Updated At 2026-03-17
Language