Marketplace · API · x402

api.onesource.io/standard/v1/backing/history

The Standard Reserve (TSR), an on-chain reserve protocol on Robinhood Chain. Backing-ratio history, joined against circulating supply as of each snapshot block. Fields ending in _raw are 18-decimal integers as strings. Divide by 1e18 to get token amounts.

Endpoint	`https://api.onesource.io/standard/v1/backing/history`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~515 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x52E29e0d2Aa49bfBfC548C0A9F2196F4aa51f3ea
method	GET
last updated	2026-11-12T16:10:54.263Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.onesource.io/standard/v1/backing/history
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-b65cc572cf19268b

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}