# Stablecoin Market Cap History

> Stablecoin Market Cap History is a paid API for AI agents from api.x402node.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-14).

Returns the total stablecoin market capitalization over recent days as a macro liquidity gauge for crypto markets

## Facts

- Endpoint: GET https://api.x402node.dev/stablecoin/mcap-history
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stablecoin-market-cap-history-ed4cb739
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KlKStc7nK20Uun45hhm2h

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-market-cap-history-ed4cb739
```

Example prompt: Pull the stablecoin market cap history for me — I want to see if total stablecoin supply has been rising or falling recently as a macro liquidity signal for crypto markets.

## When to prefer this

Use this endpoint when you need a macro crypto liquidity indicator — specifically the total stablecoin market cap trend over recent days. It is ideal for assessing whether dollar liquidity is expanding or contracting in crypto markets, which is a leading indicator for risk-on/risk-off positioning. Prefer this over individual token endpoints when you want an aggregate view of stablecoin supply dynamics.

## Known failure modes

- Data provider outage may return 503 or empty response
- Payment of 0.008 USDC required via x402 protocol; missing payment returns 402
- Rate limiting may occur under high request volume
- Stale data if upstream aggregator is delayed

## How this service works

Total stablecoin market cap over recent days, a macro liquidity gauge for crypto markets. Rising supply often precedes risk-on. Live stablecoin mcap history. stablecoin market cap history, dollar liquidity trend, crypto macro, risk on off, liquidity gauge Accepts payment on Base or Solana — either network works.

## Output

A time-series of total stablecoin market capitalization values across recent days, showing the aggregate USD-equivalent supply of stablecoins as a proxy for dollar liquidity in crypto markets. Each data point includes a date/timestamp and the total market cap value, enabling trend analysis for risk-on/risk-off macro signals.

## Example request

```json
{
 "top": "10"
}
```

## 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": {
      "days": {
       "type": "string",
       "description": "trailing days (default 30, max 365)"
      }
     }
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stablecoin-market-cap-history-ed4cb739/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.x402node.dev](https://www.zero.xyz/host/api.x402node.dev/llms.txt)