# Realedger Stablecoin On-Chain Circulating Supply

> Realedger Stablecoin On-Chain Circulating Supply is a paid API for AI agents from api.realedger.xyz, paid per call via x402, $0.99/call, status unknown (last checked 2026-09-14).

Returns the live on-chain circulating supply of major stablecoins (USDC, USDbC, DAI, USDT, EURC, cbBTC) on Base, read directly from each token contract.

## Facts

- Endpoint: GET https://api.realedger.xyz/v1/stablecoins
- Price: $0.99/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/realedger-stablecoin-on-chain-circulating-supply-cb2125c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AT4LEwjPl_H5xIduHr8Vw

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 realedger-stablecoin-on-chain-circulating-supply-cb2125c0
```

Example prompt: What are the current on-chain circulating supplies of all major stablecoins on Base — USDC, USDbC, DAI, USDT, EURC, and cbBTC — pulled directly from their contracts?

## When to prefer this

Use this endpoint when you need authoritative, contract-level on-chain stablecoin supply data specifically for the Base network, rather than aggregated or estimated off-chain figures. Ideal for DeFi analytics, RWA research, or any workflow requiring Grade A on-chain proof of stablecoin circulation.

## Known failure modes

- RPC node unavailability causing contract read failure
- Stale data if Base chain is experiencing delays
- Unsupported token requested outside the covered set
- Network timeout for on-chain contract reads
- HTTP 402 if payment not provided or insufficient

## How this service works

Weekly scoreboard grading tokenized RWA promises against verified on chain reality. Every number carries an evidence grade and a retrieval timestamp; the archive is append only.

## Output

Returns on-chain circulating supply figures for each supported stablecoin (USDC, USDbC, DAI, USDT, EURC, cbBTC) on Base, sourced directly from each token's smart contract, including supply amounts and USD notional values.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "realedger": {
   "grade": "A",
   "values": {
    "USDC": 4255477584
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/realedger-stablecoin-on-chain-circulating-supply-cb2125c0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.realedger.xyz](https://www.zero.xyz/host/api.realedger.xyz/llms.txt)