AI Inference · x402 · early usage

Silver through the silver fund and silver's own price

by api.prereason.com · discovered, not yet claimed by its owner · updated 2026-10-13

30d calls3

30d payers1

MethodGET

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

Silver through the silver fund and silver's own price. SLV's share price and the World Bank's monthly average silver price per troy ounce, speculators' net position in COMEX silver futures (CFTC), and the gold fund, the 10 year real Treasury rate, the dollar, copper and silver miners' funds beside it, each with its measured relationship to SLV. Commodity market data for research agents. A paid call serves today or any ?date= on record.

Tags: commodities · macro · bazaar

Call contract

Method: GET
Input: query parameters
Output: json
Last paid call: 2026-10-13

Input example from Bazaar metadata

{
  "format": "json"
}

Output example

{
  "briefing_metadata": {
    "correlations_count": 5,
    "description": "SLV, a silver fund (its share price, not an ounce of silver), and silver's own price per troy ounce as the World Bank's monthly average, with what is said to move them: the gold fund (GLD), the 10 year real Treasury rate, the dollar fund (UUP), speculators' positions in COMEX silver futures (CFTC), the copper fund (CPER) and the silver miners' fund (SIL), each with its measured relationship to the fund. The fund price ratios give context.",
    "metrics_count": 10,
    "name": "Commodities Silver"
  },
  "briefing_used": "commodities.silver",
  "metrics": {
    "cot-silver-noncomm-net": {
      "name": "cot-silver-noncomm-net"
    },
    "etf-cper": {
      "name": "etf-cper"
    },
    "etf-gld": {
      "name": "etf-gld"
    },
    "etf-sil": {
      "name": "etf-sil"
    },
    "etf-slv": {
      "name": "etf-slv"
    },
    "etf-uup": {
      "name": "etf-uup"
    },
    "gold-silver-ratio": {
      "name": "gold-silver-ratio"
    },
    "real-rate-10y": {
      "name": "real-rate-10y"
    },
    "slv-sil-ratio": {
      "name": "slv-sil-ratio"
    },
    "wb-silver-usd-oz": {
      "name": "wb-silver-usd-oz"
    }
  }
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/33302.json for the price and payment options.
Pay. Call GET https://api.prereason.com/api/commodities/silver. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.03 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana
Demand: 3 calls · 1 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.03	0xa499f6F6ab97ba87DB2e1fD7a1e3534125b60018	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.03	H9PEqUrPuagH87tgBpuNizmxPKFtWhWozU21bq74nL5H	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0xa499f6F6ab97ba87DB2e1fD7a1e3534125b60018",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "30000",
    "amountUsd": 0.03,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "H9PEqUrPuagH87tgBpuNizmxPKFtWhWozU21bq74nL5H",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "30000",
    "amountUsd": 0.03,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {},
  "type": "string"
}

Examples

curl

curl "https://api.prereason.com/api/commodities/silver"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://api.prereason.com/api/commodities/silver");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://api.prereason.com/api/commodities/silver")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: api.prereason.com
Endpoint: https://api.prereason.com/api/commodities/silver
Machine-readable: /resources/33302.json