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Tool Use Guardian · sickn33 | DecimalAI

agent toolingby sickn33

Tool Use Guardian

sickn33/tool-use-guardian

Source sickn33/agentic-awesome-skills ↗License MIT

FREE — Intelligent tool-call reliability wrapper. Monitors, retries, fixes, and learns from tool failures. Auto-recovers from truncated JSON, timeouts, rate limits, and mid-chain failures.

SkillScore86Maintained

Automatic

AI Engineer pack

Last verified 8/11/2026

What it changes

Passed 19 of 22 test cases with the skill, and 10 of 22 without it.

Without skill45%

With skill86%

Checks it passed that the model alone missed

Caps retries at maximum 2 attempts
Retries once with a simpler request
Flags the error for user intervention

and 7 more in the full report

9 fixed10 passed either way3 still failing0 broke

Pass-rate lift: +41 pp
Tokens: -21%
Agent turns: 0%
Response time: -53%

Model gemini-3.6-flashMeasured 8/11/2026v119 of 22 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/sickn33-tool-use-guardian/SKILL.md https://app.decimal.ai/s/sickn33-tool-use-guardian/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add sickn33-tool-use-guardian, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/sickn33-tool-use-guardian/ and pins it in .decimal/skills.lock

decimalai skills add sickn33-tool-use-guardian

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/sickn33-tool-use-guardian/SKILL.md https://app.decimal.ai/s/sickn33-tool-use-guardian/SKILL.md

Raw file: /s/sickn33-tool-use-guardian/SKILL.md ↗ · machine-readable summary at /s/sickn33-tool-use-guardian.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 9 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 9

Prompt

I want to add the standard AI agent reliability and tool call wrapper from Genesis Marketplace using npx skills. What exact package path should be passed to npx skills add?

What was checked, without and with the skill
Checked	Without skill	With skill
Specifies christopherlhammer11-ai/tool-use-guardian as the package identifier	Missed	Passed

case-13 · gemini-3.6-flash · 8/11/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md77 linessingle file

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

Track record

Benchmark

19 / 22

test cases passed, vs 10 / 22 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

sickn33 / agentic-awesome-skills

skills/tool-use-guardian/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

Tool Use Guardian

Overview

Install

When to Use This Skill

How It Works

Step 1: Pre-Call Validation

Step 2: Failure Classification

Track record

Benchmark

Adoption

SkillSafety

Source

Related skills