# x402stock Patent Lookup via ZeroClick

> x402stock Patent Lookup via ZeroClick is a paid API for AI agents from agents.x402stock.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Retrieves patent application data for a given US patent application number, paid per-request in USDC via x402.

## Facts

- Endpoint: GET https://agents.x402stock.xyz/api/v1/patent/%7Bapplication%7D
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402stock-patent-lookup-via-zeroclick-86eb87b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UsCFXTk0nHTFI-yItmLIN

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 x402stock-patent-lookup-via-zeroclick-86eb87b1
```

Example prompt: Can you look up US patent application 17/123456 and tell me what it covers, who filed it, and when?

## When to prefer this

Use this endpoint when you need per-request, pay-as-you-go patent application lookups without setting up an API key or account. Ideal for AI agents that need to autonomously fetch patent data on demand, especially when integrated with x402 payment infrastructure. Prefer over bulk patent APIs when you only need individual application lookups and want transparent per-call pricing.

## Known failure modes

- Invalid or malformed application number returns an error
- Application number not found in database returns 404 or empty result
- Payment failure (insufficient USDC balance) blocks the request
- Rate limits or upstream data source outages may cause temporary unavailability

## How this service works

Market and economic data for AI agents — US stocks, ETFs and options, forex, crypto and on-chain perps, energy commodities (crude, natural gas, gasoline), US and global macro (Fed funds, CPI/PCE, jobs, GDP, Treasury debt & yields, World Bank indicators), SEC filings, congressional trades, and market sentiment. No API keys, no accounts. Pay per request in USDC via x402 or MPP. This server is a pay-per-use, transparent proxy in front of x402stock's own API: it handles identity, payment, and proxying. Agents can purchase autonomously or with their human's approval. This document is the source of truth for agents: it lists the complete verified paid surface with each operation's live price in its x-payment-info. Endpoints not listed here are not part of the supported catalog. The live catalog at /manifest.json is authoritative for prices and any free included units (prices[].includedUnits) - some meters include free usage per account before any charge.

## Output

Returns patent application data for the specified US patent application number, likely including filing details, inventors, assignee, title, abstract, status, and related metadata sourced from the x402stock patent data feed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402stock-patent-lookup-via-zeroclick-86eb87b1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.x402stock.xyz](https://www.zero.xyz/host/agents.x402stock.xyz/llms.txt)