# Polkadot Price (DOT/USD)

> Polkadot Price (DOT/USD) is a paid API for AI agents from anibalb.duckdns.org, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).

Returns the current USD price of Polkadot (DOT) cryptocurrency via a pay-per-call x402 API requiring no account or API key.

## Facts

- Endpoint: GET https://anibalb.duckdns.org/x402/polkadot-price?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polkadot-price-dot-usd-ddd75c0c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_37rF-F89HM8FZu1H0JNlp

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 polkadot-price-dot-usd-ddd75c0c
```

Example prompt: What's the current price of Polkadot in USD? Just give me the latest DOT spot price.

## When to prefer this

Choose this endpoint when you need a quick Polkadot spot price without setting up accounts or API keys — it charges $0.001 USDC per call via x402, making it suitable for low-frequency checks, agent pipelines, or environments where traditional API key management is impractical. Prefer a dedicated crypto data provider (e.g. CoinGecko, CoinMarketCap) if you need historical data, order book depth, or high-frequency polling.

## Known failure modes

- Payment not included or invalid x402 payment header — returns 402 Payment Required
- Upstream price feed temporarily unavailable — may return 503 or stale data
- Network timeout reaching the duckdns host — returns connection error
- Malformed request — returns 400 Bad Request

## How this service works

Public data and utility APIs paid per call in USDC on Base (x402). No accounts, no API keys. 174 routes: crypto/equity data, onchain reads, DNS/email/security intel, geo/weather, x402 payment diagnostics, dev utilities and more.

## Output

A JSON object containing the coin identifier ('polkadot') and its current price in USD as a numeric value, e.g. {"coin":"polkadot","price_usd":1}.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "coin": "polkadot",
  "price_usd": 1
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polkadot-price-dot-usd-ddd75c0c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anibalb.duckdns.org](https://www.zero.xyz/host/anibalb.duckdns.org/llms.txt)