# EMC2 AI Polymarket Chain Compare

> EMC2 AI Polymarket Chain Compare is a paid API for AI agents from emc2ai.io, paid per call via x402, $0.6/call, status unknown (last checked 2026-09-15).

Compares Polymarket API data against Polygon blockchain events to surface latency arbitrage opportunities, whale signals, and settlement predictions with AI analysis

## Facts

- Endpoint: POST https://emc2ai.io/x402/bitquery/polymarket-chain-compare
- Price: $0.6/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/emc2ai-io-3db16847
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8jq3EZX34xNIGVPCXcpw2

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 emc2ai-io-3db16847 -d '<json body>'
```

Example prompt: Can you check if there's a latency gap or whale activity between the Polymarket API and Polygon chain data for the 2024 US election market right now, and give me the AI analysis on settlement probability and any arbitrage signals?

## When to prefer this

Choose this endpoint when you need to cross-reference Polymarket's centralized API feed with raw Polygon blockchain events to uncover information asymmetries, detect whale positioning before it is reflected in the API, or predict settlement outcomes using on-chain evidence — especially when latency arbitrage between the two data sources is the core use case.

## Known failure modes

- Invalid or unsupported Polymarket market ID returns error
- Polygon RPC or Bitquery data unavailable causing partial results
- No latency discrepancy detected returns empty arbitrage signals
- Market already settled returns stale or irrelevant data
- Payment of 1.15 USDC not confirmed causes 402 rejection

## How this service works

Compare Polymarket API vs Polygon blockchain events for latency arbitrage, whale signals, settlement predictions. (with AI analysis)

## Output

Returns a comparative analysis of Polymarket API data versus Polygon blockchain event data, including detected latency arbitrage windows, large wallet (whale) accumulation or exit signals, AI-generated settlement predictions, and risk-scored trading signals derived from on-chain vs API discrepancies.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "string",
   "description": "Maximum number of results to return (default: 10, max: 500)"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/emc2ai-io-3db16847/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from emc2ai.io](https://www.zero.xyz/host/emc2ai.io/llms.txt)