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AUN Tool-Call Audit
x402
AUN Tool-Call Audit is a paid API for AI agents from a-upgradenet.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-10-22).
Audits and optimizes an AI agent's system prompt and tool definitions, returning a verified upgrade report with a recommended improved configuration and performance delta.
Price / call$0.1
Success—
StatusUnknown
How this service works
Tool-Call Audit: measures how an AI agent calls its tools on a hidden test, returns a fix that keeps the interface unchanged, and re-measures. Charged only after the report exists.
Output
Returns a JSON report containing: a tier label (e.g. 'basic'), a verdict ('improved' or otherwise), the baseline held-out pass rate and count, the improved held-out pass rate after applying recommendations, a recommended system prompt and tool list, a numeric delta_points improvement score, any remaining failures, and a status field confirming completion.
Example use cases
Diagnosing a failing customer support agent
“My customer support agent keeps misusing the escalate_ticket tool and I'm not sure if it's the system prompt or the tool definitions causing the issue — can you audit the prompt and tools and give me a recommended fix with a performance score?”
Pre-deployment agent configuration review
“Before I ship my new research agent to production, can you run an audit on its system prompt and 5 tool definitions to see what the baseline pass rate is and whether the recommended configuration would meaningfully improve it?”
Comparing tool-call accuracy before and after a refactor
“I just rewrote my agent's system prompt from scratch — can you audit both the old and new versions with my tool schemas and show me the delta in performance so I know if the rewrite actually helped?”
Technical details
Endpoint
POSThttps://a-upgradenet.com/x402/tool-call-audit?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quantified, auditable assessment of an AI agent's system prompt and tool-calling configuration, specifically when you want a before/after performance delta and an actionable recommended configuration. Prefer this over generic prompt review tools when you need structured pass-rate metrics, a verified upgrade verdict, and a concrete recommended system prompt plus tool list ready to deploy.
Side effects
- System prompt exceeds 8000 character limit — request rejected
- Tools array is empty or exceeds 12 items — validation error
- Missing required 'name' or 'parameters' fields on a tool object — schema error
- Invalid language enum value (must be 'en' or 'es') — bad request
- Payment not received or insufficient — 402 response, audit not run
- Malformed JSON body — parsing error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| language | string |
Output
Schema · Response
{
"type": "json",
"example": {
"tier": "basic",
"report": {
"verdict": "improved",
"baseline": {
"held_out": {
"rate": 0.55,
"total": 11,
"passed": 6
}
},
"improved": {
"held_out": {
"rate": 0.91,
"total": 11,
"passed": 10
}
},
"recommended": {
"tools": [
"..."
],
"system_prompt": "..."
},
"delta_points": 36.4,
"remaining_failures": []
},
"status": "completed"
}
}Tags
x402
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