# AI Agent Tool Call Reliability Analyzer

> AI Agent Tool Call Reliability Analyzer is a paid API for AI agents from app-443.hdgregory.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Analyzes a single AI agent tool call and returns a structured reliability report detecting failure modes like hallucination, sycophancy, and schema violations

## Facts

- Endpoint: POST https://app-443.hdgregory.com/run
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ai-agent-tool-call-reliability-analyzer-19a60545
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_cst2hBLg7sY_eArh_xojl

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ai-agent-tool-call-reliability-analyzer-19a60545 -d '<json body>'
```

Example prompt: Can you analyze this tool call to my 'search_web' tool — it was called with query='best restaurants NYC', returned a long unstructured blob, took 2400ms, and the model reported 0.6 confidence — I want to know if it hallucinated, gap-filled, or violated schema, and what I should do about it.

## When to prefer this

Use this endpoint when you need per-call, real-time reliability analysis of individual AI agent tool calls — especially when you need to detect nuanced LLM-specific failure modes like sycophantic gap-filling, context degradation, and confidence collapse that generic schema validators cannot catch. Prefer this over simple JSON validators when you need actionable remediation suggestions tied to specific failure modes, or when monitoring agent reliability in production at a per-call granularity.

## Known failure modes

- Invalid or missing required fields (tool_name, parameters, response, latency_ms) returns an error
- Malformed JSON body causes a parse error
- Non-JSON-serializable response value in the body field causes rejection
- Payment not included or insufficient (x402 protocol) results in 402 Payment Required
- Network timeout for slow tool calls with very large response payloads
- Service unavailable returns an error with null result

## How this service works

Analyzes a single AI agent tool call and returns a structured reliability report. Detects failure modes including sycophantic gap-filling, context degradation, hallucination, repetition loops, confidence collapse, and schema violations, with remediation suggestions for each.

## Output

A structured reliability report with a status field (pass/warn/fail/critical), a metrics object, an array of detected failures (e.g. hallucination, sycophantic gap-filling, schema violations, repetition loops, confidence collapse, context degradation), and an array of string remediation recommendations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "call_id": {
   "type": "string",
   "description": "Optional identifier for this call"
  },
  "response": {
   "description": "The tool's raw response (any JSON-serializable value)"
  },
  "tool_name": {
   "type": "string",
   "description": "Name of the tool that was called"
  },
  "latency_ms": {
   "type": "number",
   "description": "Call latency in milliseconds"
  },
  "parameters": {
   "type": "object",
   "description": "Parameters the tool was called with"
  },
  "token_count": {
   "type": "integer",
   "description": "Optional token count for the response"
  },
  "expected_schema": {
   "type": "object",
   "description": "Optional JSON Schema the response is expected to match"
  },
  "confidence_score": {
   "type": "number",
   "description": "Optional model-reported confidence, 0.0-1.0"
  },
  "context_window_used": {
   "type": "number",
   "description": "Optional context window utilization, 0.0-1.0"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ai-agent-tool-call-reliability-analyzer-19a60545/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app-443.hdgregory.com](https://www.zero.xyz/host/app-443.hdgregory.com/llms.txt)