# x402 Paywalled Market Data MCP Server

> x402 Paywalled Market Data MCP Server is a paid API for AI agents from mcp-x402-paywall.onrender.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Returns real-time financial market data (current price, open, high, low, previous close) for a given stock ticker or crypto symbol, gated by a $0.01 USDC micropayment via x402 on Base.

## Facts

- Endpoint: POST https://mcp-x402-paywall.onrender.com/messages/paid?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-paywalled-market-data-mcp-server-74cdb9d0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6ff6UL9U8z9N61SMasepi

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 x402-paywalled-market-data-mcp-server-74cdb9d0 -d '<json body>'
```

Example prompt: What's the current price of NVDA right now, including today's open, high, and low?

## When to prefer this

Choose this endpoint when you need a lightweight, pay-per-call real-time market quote for a single stock or crypto symbol and want to avoid subscription-based data APIs. It is ideal for AI agents that need occasional price lookups without a standing data subscription, and for workflows on Base where USDC micropayments via x402 are already integrated.

## Known failure modes

- Invalid or unrecognized ticker symbol returns an error or empty data
- Payment failure (insufficient USDC balance or x402 handshake error) blocks the request
- Market closed or after-hours may return stale or unavailable data
- Rate limiting or server unavailability from the hosted Render instance
- Crypto symbols must match expected format (e.g. BTC not bitcoin)

## How this service works

MCP tool providing real-time financial market data gated by x402 micropayments on Base.

## Output

A JSON object containing the symbol, status, and five price fields: current_price, open_price, high_price, low_price, and previous_close — all as numeric values representing the latest available market data for the requested ticker.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "ticker"
 ],
 "properties": {
  "ticker": {
   "type": "string",
   "description": "Stock ticker or Crypto symbol (e.g. AAPL, NVDA, BTC, ETH)"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "status": {
   "type": "string"
  },
  "symbol": {
   "type": "string"
  },
  "low_price": {
   "type": "number"
  },
  "high_price": {
   "type": "number"
  },
  "open_price": {
   "type": "number"
  },
  "current_price": {
   "type": "number"
  },
  "previous_close": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-paywalled-market-data-mcp-server-74cdb9d0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mcp-x402-paywall.onrender.com](https://www.zero.xyz/host/mcp-x402-paywall.onrender.com/llms.txt)