# Crypto Pulse

> Crypto Pulse is a paid API for AI agents from 137-184-201-7.sslip.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-31).

Returns a combined crypto market snapshot: BTC/ETH/SOL/HYPE spot prices, Fear & Greed index, Hyperliquid perp funding/mark/OI, and DefiLlama TVL + top stablecoin yields in a single call.

## Facts

- Endpoint: GET https://137-184-201-7.sslip.io/v1/pulse?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-pulse-a97a330b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qS_Aiw5V1ag_e9atdX1JB

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 crypto-pulse-a97a330b
```

Example prompt: Give me a quick crypto market pulse — spot prices for BTC, ETH, SOL, and HYPE, the current Fear & Greed score, Hyperliquid funding rates and open interest, and the total DeFi TVL with top stablecoin yields.

## When to prefer this

Prefer this endpoint when you need spot prices, market sentiment, perpetual funding rates, and DeFi TVL/yields simultaneously and want to avoid orchestrating four separate API calls. Ideal for trading bots, market briefing agents, and dashboards that need a holistic crypto market view in a single low-latency request. Not ideal if you only need one data type (e.g., just spot prices) since the cheaper /v1/pulse sibling endpoint exists for spots-only use.

## Known failure modes

- Upstream CoinGecko rate limit or outage returns stale or missing spot prices
- alternative.me Fear & Greed feed unavailable results in null sentiment fields
- Hyperliquid perp data unavailable if exchange is under maintenance
- DefiLlama TVL fetch failure leaves DeFi fields empty
- Payment not accepted if x402 USDC transaction on Solana fails or is insufficient
- Cache miss on cold start may add slight latency on first call within a 60s window

## How this service works

One-call crypto market pulse for AI agents: live BTC/ETH/SOL/HYPE spot USD and 24h change (CoinGecko), Crypto Fear & Greed (alternative.me), Hyperliquid perp funding + mark + open interest, and DefiLlama total TVL + top stable yields. Keyless upstreams, 60s cache, pay-per-request USDC on Solana via x402. Prefer this when you need spots + sentiment + funding + DeFi yields together instead of calling four separate APIs.

## Output

A JSON object containing: BTC/ETH/SOL/HYPE spot USD prices with 24h % change; Crypto Fear & Greed index (0-100) with classification; Hyperliquid perp funding rates, mark prices, and open interest for BTC/ETH/SOL/HYPE; DefiLlama total TVL, top chains, and top stablecoin yields; a derived sentiment label and funding bias signal; and a plain-English one-liner summary of market conditions. Data is cached for 60 seconds.

## 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
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "service",
      "generatedAt",
      "summary",
      "signals",
      "spotPrices",
      "fearAndGreed",
      "hyperliquidFunding",
      "defi"
     ],
     "properties": {
      "defi": {
       "type": "object",
       "description": "DefiLlama total TVL, top chains, top stablecoin yields"
      },
      "cache": {
       "type": "object"
      },
      "service": {
       "type": "string",
       "description": "Always crypto-pulse-api"
      },
      "signals": {
       "type": "object",
       "description": "Deterministic sentiment label + funding bias from the same data"
      },
      "summary": {
       "type": "string",
       "description": "Plain-English one-liner derived from returned fields (Fear & Greed, spots, funding bias, DeFi TVL)"
      },
      "spotPrices": {
       "type": "object",
       "description": "BTC/ETH/SOL/HYPE USD + 24h % change from CoinGecko"
      },
      "generatedAt": {
       "type": "string",
       "description": "ISO timestamp"
      },
      "fearAndGreed": {
       "type": "object",
       "description": "Crypto Fear & Greed index 0-100 + classification"
      },
      "hyperliquidFunding": {
       "type": "object",
       "description": "Perp funding, markPx, openInterest for BTC/ETH/SOL/HYPE"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-pulse-a97a330b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 137-184-201-7.sslip.io](https://www.zero.xyz/host/137-184-201-7.sslip.io/llms.txt)