# AgentKit x402 Market Pulse — Crypto Price & Fear/Greed Index

> AgentKit x402 Market Pulse — Crypto Price & Fear/Greed Index is a paid API for AI agents from agentkit-x402-buy.netlify.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns real-time BTC and ETH prices plus the crypto Fear & Greed index, paid per-call with USDC on Base via x402 protocol.

## Facts

- Endpoint: GET https://agentkit-x402-buy.netlify.app/api/market-pulse
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentkit-x402-market-pulse-crypto-price-fear-greed-index-8fbb6912
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Or7FHUWF3vBIF6O1OA0_B

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 agentkit-x402-market-pulse-crypto-price-fear-greed-index-8fbb6912
```

Example prompt: What's the current Bitcoin and Ethereum price, and is the market feeling fearful or greedy right now? Pay for it with USDC on Base.

## When to prefer this

Choose this endpoint when your AI agent needs real-time BTC/ETH prices and crypto sentiment (Fear & Greed) without managing API keys — ideal for autonomous agents that can pay micropayments in USDC on Base via x402. Prefer over traditional data APIs when you want a keyless, pay-per-use model with on-chain settlement and Coinbase-curated reliability.

## Known failure modes

- Insufficient USDC balance or failed x402 payment results in 402 Payment Required response
- Network congestion on Base may delay payment settlement
- Stale or unavailable upstream price feed may return outdated or null values
- Invalid query parameter format returns 400 Bad Request
- Service unavailable on Netlify infrastructure returns 503

## How this service works

x402 pay-per-call DeFi and crypto intel for AI agents. USDC on Base. No API keys.

## Output

A JSON object containing the BTC/USD price, ETH/USD price, a Fear & Greed index score (0–100), the seller wallet address, and the Base network chain identifier (eip155:8453). No API key required; cost is $0.001 USDC per call settled on Base.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "format": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "seller": "0xEb76f3442EAF192EBdDbc1F7EeBD59CdE5e00D35",
  "btc_usd": 64000,
  "eth_usd": 3500,
  "network": "eip155:8453",
  "fear_greed": 27
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentkit-x402-market-pulse-crypto-price-fear-greed-index-8fbb6912/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentkit-x402-buy.netlify.app](https://www.zero.xyz/host/agentkit-x402-buy.netlify.app/llms.txt)