Sports odds MCP server compares Pinnacle fair odds with Polymarket and Kalshi prices
Unhappy_Composer_894 · reddit · 2026-10-17
A developer launched a remote sports odds MCP server (polymarket-kalshi-odds), listed on the official MCP Registry, Smithery, and Glama, billed per successful call via Apify with errors free.
Four tools:
- fairprobability: Pinnacle de-vigged fair probability ($0.01)
- comparevenues: walks Polymarket/Kalshi order books with fees, returns EV/ROI verdict ($0.03)
- scanmispricings: scans a whole league for mispricings in one call ($0.10)
- resolutioncheck: does the market settle on 90 min or extra time ($0.02)
Design notes for MCP server authors: errors return suggestions (closest team names, valid league codes) so agents self-recover on the next call; tool descriptions enumerate every league code so the model never guesses inputs; analysis runs as deterministic code, not an LLM, for reproducible outputs.
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