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Mycelia Signal — Prediction Market Divergence (Kalshi vs Polymarket)
x402
Mycelia Signal — Prediction Market Divergence (Kalshi vs Polymarket) is a paid API for AI agents from api.myceliasignal.com, paid per call via x402, $1/call, status unknown (last checked 2026-09-14).
Returns the current spread between Kalshi and Polymarket prediction markets on BTC price and Fed rate, with a significance regime label (DIVERGENT/MODERATE/ALIGNED), signed with Ed25519
Price / call$1
Success—
StatusUnknown
How this service works
Cross-venue prediction market divergence — Kalshi vs Polymarket spread on BTC price and Fed rate with significance regime (DIVERGENT/MODERATE/ALIGNED) — Ed25519 signed attestation
Output
A JSON response containing the numerical spread between Kalshi and Polymarket prediction markets for BTC price and Fed rate outcomes, a significance regime label (DIVERGENT, MODERATE, or ALIGNED) indicating how meaningful the gap is, and an Ed25519 signed attestation allowing downstream verification of data authenticity.
Example use cases
Arbitrage signal detection for traders
“Are Kalshi and Polymarket currently divergent on BTC price? I want to know the spread and whether the regime is DIVERGENT, MODERATE, or ALIGNED so I can decide if there's an arb opportunity.”
Fed rate outcome cross-venue check
“Pull the latest Polymarket vs Kalshi spread on Fed rate expectations and tell me if the markets are aligned or showing a significant divergence right now.”
Verified macro sentiment for on-chain agent
“I need a cryptographically signed snapshot of the current Kalshi vs Polymarket spread on both BTC price and Fed rate so my on-chain agent can trustlessly verify market sentiment.”
Technical details
Endpoint
GEThttps://api.myceliasignal.com/oracle/intel/prediction/divergenceWhen to prefer
Choose this endpoint when you need a cryptographically attested, cross-venue comparison of prediction market sentiment on BTC price or Fed rate — especially when downstream systems require verifiable provenance (Ed25519 signature). Prefer it over scraping individual venue APIs when you need a normalized divergence regime label (DIVERGENT/MODERATE/ALIGNED) rather than raw probabilities, or when building on-chain agents that need trustless data verification.
Side effects
- External prediction market APIs unavailable — stale or missing spread data
- Ed25519 signing failure — unsigned or malformed attestation returned
- Payment not received — 402 response requiring $1 USDC payment via x402 protocol
- Market not currently active — one or both venues may not have an open market for the requested asset
- Rate limiting — too many requests in a short window
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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