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HARS-Zero Signal API – Depth Snapshot
x402
HARS-Zero Signal API – Depth Snapshot is a paid API for AI agents from hars.cryptotavern.xyz, paid per call via x402, $0.016/call, status unknown (last checked 2026-10-18).
Returns a depth snapshot of Polymarket prediction markets, providing order book and market intelligence data for AI agents.
Price / call$0.016
Success—
StatusUnknown
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 matched markets and an array of market objects with order book depth data for Polymarket prediction markets. The markets array may be empty if no markets match the filter.
Example use cases
Political market liquidity check
“Get me a Polymarket depth snapshot for active political markets — I want to see how much liquidity is on both sides of the major election events right now.”
Crypto trading signal feed
“Fetch the latest Polymarket depth snapshot so my trading bot can analyze order book depth signals before deciding whether to enter a position.”
Market research on active predictions
“Pull a Polymarket depth snapshot and tell me how many markets are currently active and what the order book looks like for the top ones.”
Technical details
Endpoint
GEThttps://hars.cryptotavern.xyz/paid/depth-snapshot?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a point-in-time snapshot of Polymarket order book depth and market listings, especially in an autonomous agent context using USDC micropayments via the x402 protocol. Prefer this over scraping Polymarket directly when you need structured, agent-ready data with predictable pay-per-call pricing on Base or Solana.
Side effects
- Payment not received or x402 protocol handshake fails — returns 402 Payment Required
- No markets match the provided properties filter — returns count:0 and empty markets array
- Invalid or malformed input properties parameter — may return an error or empty result
- Polymarket data source unavailable — may return stale or empty snapshot
- Rate limiting or quota exceeded after micropayment issues
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "object",
"example": {
"count": 0,
"markets": []
}
}Tags
x402
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