# Stablecoin Circulating Supply by Chain

> Stablecoin Circulating Supply by Chain is a paid API for AI agents from santyvv-x402.santyvv1993.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-01).

Returns the circulating supply of stablecoins broken down by blockchain network

## Facts

- Endpoint: GET https://santyvv-x402.santyvv1993.workers.dev/api/defi/stablecoin-chains?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablecoin-circulating-supply-by-chain-c192f04c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PytSVuCrQHbyLefyj9b82

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 stablecoin-circulating-supply-by-chain-c192f04c
```

Example prompt: Show me the circulating supply of all major stablecoins broken down by blockchain — I want to see how USDT, USDC, and others are distributed across chains like Ethereum, Tron, and Solana.

## When to prefer this

Choose this endpoint when you need a cross-chain view of stablecoin supply distribution, particularly for DeFi analytics, liquidity research, or monitoring which blockchains hold the most stablecoin value. It is ideal for agents that need to compare on-chain stablecoin metrics across multiple networks in a single call rather than querying each chain separately.

## Known failure modes

- No query parameters supported — request must be a plain GET with no filters
- Stale or delayed data if upstream provider cache hasn't refreshed
- HTTP 402 Payment Required if x402 payment header is missing or insufficient
- Rate limiting if too many requests are made in a short window
- Empty or partial response if the upstream data source is temporarily unavailable

## How this service works

Stablecoin circulating supply by chain

## Output

Returns a structured dataset of stablecoins with their circulating supply figures organized by blockchain network, including chain names, stablecoin identifiers, and supply amounts.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablecoin-circulating-supply-by-chain-c192f04c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from santyvv-x402.santyvv1993.workers.dev](https://www.zero.xyz/host/santyvv-x402.santyvv1993.workers.dev/llms.txt)