# NovaPath Evidence Quality Auditor

> NovaPath Evidence Quality Auditor is a paid API for AI agents from instructional-decision-engine-x402.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-31).

Audits a supplied list of evidence sources for freshness, source type, sample size, methods availability, and reuse permission, returning per-source quality flags.

## Facts

- Endpoint: POST https://instructional-decision-engine-x402.vercel.app/research/evidence-quality?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/novapath-evidence-quality-auditor-524a06d1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_j6QKHAnnK5R_S7MlVjxc7

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 novapath-evidence-quality-auditor-524a06d1 -d '<json body>'
```

Example prompt: Can you audit these 3 evidence sources for me — the first is 180 days old, a primary source, sample size 1200, methods available, reuse permission yes; the second is 400 days old, secondary, sample size 50, no methods, reuse unknown; the third is 90 days old, primary, sample size 800, methods available, reuse no — flag any issues and treat anything older than 365 days as too stale.

## When to prefer this

Choose this endpoint when you need a structured, per-source quality audit of an evidence inventory before using it in research, policy, or decision-making workflows — particularly when freshness thresholds, methods transparency, and reuse rights are all relevant dimensions. Prefer it over manual review when auditing multiple sources at once and needing machine-readable flags per source position.

## Known failure modes

- Missing required source fields (ageDays, primary, sampleSize, methodsAvailable, permissionToReuse) returns validation error
- Sources array exceeding 20 items rejected
- ageDays or sampleSize outside allowed range returns schema error
- maximumAgeDays outside 1–3650 range rejected
- Empty sources array rejected
- Payment not received or insufficient USDC results in 402 response

## How this service works

Audit a supplied evidence inventory for freshness, source type, sample disclosure, methods and reuse permission. Returns per-source flags by position; no raw reports, population claims or legal clearance.

## Output

Returns an array of per-source quality flags keyed by position in the input list, indicating issues with freshness (relative to maximumAgeDays), whether the source is primary or secondary, adequacy of sample size disclosure, methods availability, and reuse permission status. Does not return raw reports, population-level claims, or legal clearance.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "sources": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "ageDays",
     "primary",
     "sampleSize",
     "methodsAvailable",
     "permissionToReuse"
    ],
    "properties": {
     "ageDays": {
      "type": "integer",
      "maximum": 36500,
      "minimum": 0
     },
     "primary": {
      "type": "boolean"
     },
     "sampleSize": {
      "type": "integer",
      "maximum": 100000000,
      "minimum": 0
     },
     "methodsAvailable": {
      "type": "boolean"
     },
     "permissionToReuse": {
      "enum": [
       "yes",
       "no",
       "unknown"
      ],
      "type": "string"
     }
    },
    "additionalProperties": false
   },
   "maxItems": 20,
   "minItems": 1
  },
  "maximumAgeDays": {
   "type": "integer",
   "maximum": 3650,
   "minimum": 1
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/novapath-evidence-quality-auditor-524a06d1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from instructional-decision-engine-x402.vercel.app](https://www.zero.xyz/host/instructional-decision-engine-x402.vercel.app/llms.txt)