# HTTPay Stablecoin Flow Monitor

> HTTPay Stablecoin Flow Monitor is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).

Tracks USDC, USDT, DAI, and FRAX stablecoin supply, 7-day changes, net mint/burn flows, and total stablecoin TVL on Base using live DeFiLlama data.

## Facts

- Endpoint: POST https://httpay.xyz/api/stablecoin-flow-monitor
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/httpay-stablecoin-flow-monitor-27349ff4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3a2KOAbm9z1T9EFjrAaUM

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 httpay-stablecoin-flow-monitor-27349ff4 -d '<json body>'
```

Example prompt: Can you pull the latest stablecoin flow data for Base — I want to see the current USDC, USDT, DAI, and FRAX supply, any net mint or burn activity, and the total stablecoin TVL over the last 7 days?

## When to prefer this

Use this endpoint when you need real-time stablecoin supply and flow metrics specifically for the Base chain, including mint/burn breakdowns and TVL aggregates, without needing an API key — ideal for DeFi dashboards, on-chain liquidity analysis, or automated monitoring agents.

## Known failure modes

- DeFiLlama data unavailable — upstream API outage returns degraded or empty response
- Invalid chain parameter returns error or empty dataset
- Payment not processed (402 response) — USDC payment via x402 on Base required before data is returned
- Rate or network issues on Base may delay payment confirmation

## How this service works

Stablecoin flow monitor for Base — tracks USDC/USDT/DAI/FRAX supply, 7d changes, net mint/burn flows, and total stablecoin TVL. Live data from DeFiLlama. Supports ?chain=base&period=7d&demo=true.

## Output

A JSON object containing per-stablecoin supply figures (USDC, USDT, DAI, FRAX) on Base, their 7-day changes, net mint and burn flow totals, and aggregate stablecoin TVL — sourced live from DeFiLlama.

## Example request

```json
{
 "chain": "base"
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "description": "Stablecoin flow monitor for Base — tracks USDC/USDT/DAI/FRAX supply, 7d changes, net mint/burn flows, and total stablecoin TVL. Live data from DeFiLlama. Supports ?chain=base&period=7d&demo=true."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/httpay-stablecoin-flow-monitor-27349ff4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from httpay.xyz](https://www.zero.xyz/host/httpay.xyz/llms.txt)