# FiatDock Stablecoin Intelligence

> FiatDock Stablecoin Intelligence is a paid API for AI agents from fiatdock.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns circulating supply, peg deviation from $1.00, and per-chain breakdown (including Base) for USDC and other stablecoins, powered by DefiLlama data.

## Facts

- Endpoint: POST https://fiatdock.com/v1/stablecoin/intel
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fiatdock-stablecoin-intelligence-3443a95b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_X3pj6t7vMg8sDhUcbLc3e

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 fiatdock-stablecoin-intelligence-3443a95b -d '<json body>'
```

Example prompt: Can you check whether USDC is holding its $1.00 peg right now, and tell me the total circulating supply plus how much of it is sitting on Base?

## When to prefer this

Choose this endpoint when you need real-time stablecoin peg health, circulating supply, or Base-chain-specific supply data for USDC or other major stablecoins. Prefer it over generic crypto price APIs when you specifically need peg deviation, per-chain supply breakdown, or DeFi-native stablecoin intelligence. The pay-per-call x402 model makes it cost-effective for sporadic lookups without a subscription.

## Known failure modes

- Upstream DefiLlama data unavailable — returns >=400 status and no charge is applied
- Unknown or unsupported stablecoin asset symbol — likely returns an error response
- Network timeout reaching DefiLlama data source
- Stale data if DefiLlama feed is delayed

## How this service works

Stablecoin intelligence — circulating supply, $1.00 peg deviation and per-chain breakdown (incl. Base) for USDC and other stablecoins (DefiLlama). Pay-per-call via x402.

## Output

A JSON object containing: stablecoin name and asset symbol, current price, absolute peg deviation percentage from $1.00, a peg status label (e.g. 'on-peg'), peg mechanism (e.g. 'fiat-backed'), total circulating supply in USD, and a breakdown for the Base chain showing circulating USD and its percentage share of total supply. Returns HTTP 4xx (without charging) when upstream data is unavailable.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "asset": {
   "type": "string",
   "description": "Stablecoin symbol, e.g. USDC, USDT, DAI (defaults to USDC)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "USD Coin",
  "note": "pegDeviationPct is the absolute % deviation from $1.00 (NOT basis points). Answers >=400 (and settles nothing) when the upstream data is unavailable, so you are never charged for a missing answer.",
  "asset": "USDC",
  "price": 1.0001,
  "onBase": {
   "circulatingUsd": 4200000000,
   "shareOfTotalPct": 5.61
  },
  "pegStatus": "on-peg",
  "pegMechanism": "fiat-backed",
  "pegDeviationPct": 0.01,
  "totalCirculatingUsd": 74900000000
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fiatdock-stablecoin-intelligence-3443a95b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fiatdock.com](https://www.zero.xyz/host/fiatdock.com/llms.txt)