# HARS-Zero Signal API – TradingView Export

> HARS-Zero Signal API – TradingView Export is a paid API for AI agents from hars.cryptotavern.xyz, paid per call via x402, $0.015/call, status unknown (last checked 2026-10-18).

Exports Polymarket prediction-market data in a TradingView-compatible format for AI agents, paid per call in USDC.

## Facts

- Endpoint: GET https://hars.cryptotavern.xyz/paid/reseller/tradingview-export?utm_source=zero.xyz
- Price: $0.015/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hars-zero-signal-api-tradingview-export-5051a04b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_c3mNpmmKzlvsvpoJ5bWWj

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 hars-zero-signal-api-tradingview-export-5051a04b
```

Example prompt: Pull the latest Polymarket prediction market data in TradingView export format — I want to see all available markets so I can chart them.

## When to prefer this

Choose this endpoint when you need Polymarket prediction-market data formatted specifically for TradingView integration and are willing to pay per call in USDC via the x402 micropayment protocol. It is well-suited for AI agents that need on-demand market intelligence without a subscription, especially when operating on Base or Solana chains.

## Known failure modes

- Payment failure via x402 protocol resulting in 402 response and no data returned
- Empty markets array returned when no markets match the given properties filter
- Invalid or malformed properties query parameter causing an error response
- Service downtime on hars.cryptotavern.xyz resulting in connection failure
- Rate limiting or access denial if payment is not correctly processed in USDC on Base or Solana

## How this service works

Polymarket prediction-market intelligence for AI agents. Pay-per-call in USDC via x402 protocol. Multi-chain: Base + Solana.

## Output

Returns a JSON object containing a count of markets and an array of Polymarket prediction market entries formatted for TradingView compatibility. The markets array may be empty if no markets match the filter or if no markets are currently available.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "count": 0,
  "markets": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hars-zero-signal-api-tradingview-export-5051a04b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hars.cryptotavern.xyz](https://www.zero.xyz/host/hars.cryptotavern.xyz/llms.txt)