# USDC & EURC Supply and Control Snapshot

> USDC & EURC Supply and Control Snapshot is a paid API for AI agents from www.blockchainiq.co, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Returns a parameter-free daily snapshot of USDC and EURC stablecoin supply metrics, issuance breakdown, mint/burn activity, and control/freeze risk data across Ethereum, Base, and Arbitrum.

## Facts

- Endpoint: GET https://www.blockchainiq.co/api/x402/v1/stablecoins?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/usdc-eurc-supply-and-control-snapshot-152a3925
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xe1IT7_JW_CiKDF9nrcAi

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 usdc-eurc-supply-and-control-snapshot-152a3925
```

Example prompt: Give me the latest USDC and EURC supply snapshot — total supply, how much the supply has changed over the past 7 and 30 days, net issuance split by CCTP and Gateway, mint and burn counts, whether either token is paused, and any recent blacklist or control events across Ethereum, Base, and Arbitrum.

## When to prefer this

Choose this endpoint when you need a comprehensive, analyst-curated daily snapshot of USDC and EURC stablecoin supply, issuance, and control risk across Ethereum, Base, and Arbitrum in a single parameterless call — especially when monitoring freeze risk, blacklist trends, or supply-side issuance flows without needing to query raw blockchain contracts directly.

## Known failure modes

- Payment not processed — 402 response if x402 payment is not attached or fails
- Stale data — data is refreshed daily so intraday supply changes will not be reflected
- Network or upstream error — 5xx if blockchain node data is temporarily unavailable
- Rate limiting — excessive calls in a short window may be throttled

## How this service works

Parameter-free Circle USDC and EURC snapshot on Ethereum, Base and Arbitrum from the token contracts: total supply, 1/7/30-day supply change, 7-day net issuance split CCTP / Gateway / other minters, mint and burn counts, paused flag, implementation and last upgrade, role holders, blacklist count and 30-day changes, last control event. Use to watch stablecoin supply and freeze risk. Refreshed daily; never sold stale. JSON, no API key. $0.01 per call. Blockchain IQ.

## Output

A JSON object containing: total USDC and EURC supply per chain (Ethereum, Base, Arbitrum), 1/7/30-day supply change figures, 7-day net issuance broken down by CCTP, Gateway, and other minters, mint and burn counts, a paused boolean flag, current implementation address and last upgrade timestamp, role holders, blacklist count with 30-day delta, and the most recent control event. Data is refreshed daily.

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/usdc-eurc-supply-and-control-snapshot-152a3925/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.blockchainiq.co](https://www.zero.xyz/host/www.blockchainiq.co/llms.txt)