# OnchainPulse Tokenized Gold Comparison (PAXG vs XAUT)

> OnchainPulse Tokenized Gold Comparison (PAXG vs XAUT) is a paid API for AI agents from onchainpulse.theaslangroupllc.com, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-14).

Compares tokenized gold tokens PAXG and XAUT across live market cap, price vs. spot gold, attestation freshness, and vault custody details.

## Facts

- Endpoint: GET https://onchainpulse.theaslangroupllc.com/api/gold-check
- Price: $0.15/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/onchainpulse-tokenized-gold-comparison-paxg-vs-xaut-7aa93eb2
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_gsjjWlh2ffUj3gLpJbXSR

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 onchainpulse-tokenized-gold-comparison-paxg-vs-xaut-7aa93eb2
```

Example prompt: Pull the latest PAXG vs XAUT comparison for me — I want to see live market cap, how each one tracks against spot gold right now, and which one has more up-to-date vault attestations before I allocate to a tokenized gold position.

## When to prefer this

Use this endpoint when an AI agent or treasury/compliance workflow needs a direct, structured side-by-side comparison of PAXG and XAUT specifically, including attestation freshness signals that are not easily available from generic crypto data APIs. Prefer over raw market data APIs when custody and audit recency matter for risk assessment.

## Known failure modes

- Stale data if upstream gold price feeds or token issuers have delayed reporting
- HTTP 402 if USDC payment of $0.15 is not included or fails
- 503 if the data aggregation backend is temporarily unavailable
- Partial data if one token's attestation source is offline

## How this service works

Tokenized gold comparison — PAXG vs XAUT: live market cap, price vs. spot gold, attestation freshness (monthly vs quarterly), vault custody. For commodities and treasury agents.

## Output

Returns a structured comparison of PAXG and XAUT including: live market capitalization for each token, current price relative to spot gold (premium/discount), attestation schedule and freshness (monthly for one, quarterly for the other), and vault custody details for each issuer.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "lang": {
       "type": "string",
       "description": "en | de | fr | es | zh | ja | ko | pt | ar"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "errors": {
     "type": "object",
     "description": "Documented error responses, keyed by HTTP status code",
     "additionalProperties": {
      "type": "object",
      "required": [
       "description"
      ],
      "properties": {
       "example": {
        "type": "object"
       },
       "description": {
        "type": "string"
       }
      }
     }
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "tokens": [
   {
    "symbol": "PAXG",
    "attestor": "KPMG LLP",
    "price_usd": 4172.22,
    "attestation_cadence": "Monthly",
    "premium_or_discount_vs_spot_pct": -0.19
   },
   {
    "symbol": "XAUT",
    "attestor": "BDO Italia",
    "price_usd": 4166.12,
    "attestation_cadence": "Quarterly",
    "premium_or_discount_vs_spot_pct": -0.33
   }
  ],
  "spot_gold_reference": {
   "source": "gold-api.com (XAU spot)",
   "price_usd_per_oz": 4180,
   "is_independent_feed": true
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/onchainpulse-tokenized-gold-comparison-paxg-vs-xaut-7aa93eb2/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onchainpulse.theaslangroupllc.com](https://www.zero.xyz/host/onchainpulse.theaslangroupllc.com/llms.txt)