0xinsider
Polymarket analytics and infrastructure for sports and esports markets.
Overview
0xinsider builds Polymarket analytics and infrastructure for sports and esports markets. It grades every tracked Polymarket wallet from S to F on its settled P&L, and keeps wallets with only a handful of resolved markets off its ranked board, so a trader can tell a wallet with a record from one that is only large.
Its large-trade feed lists Polymarket sports and esports fills of $10,000 or more with the wallet behind each one and its grade. Pro and Max stream the feed live; the Free plan shows fills a day after they clear. Game boards cover NFL, NBA, soccer, tennis, UFC, CS2, League of Legends, and more, and Pro adds the money from graded wallets on each side of a game.
Developers read the same data through a REST API with an OpenAPI 3.1 contract, SDKs for TypeScript, Python, and Go, and a hosted MCP server with 55 read-only tools. Live API and MCP calls come with Pro and Max, and a no-key sandbox answers documented calls with example data. 0xinsider reads public Polymarket data and never places trades.
The Solution
Key Features
Wallet grades S to F
Grades every tracked Polymarket wallet from S to F on settled P&L; wallets with few resolved markets stay off the ranked board.
Large-trade feed
Lists sports and esports fills of $10,000 or more with the wallet behind each one and its grade.
Game boards
Boards for NFL, NBA, soccer, tennis, UFC, CS2, League of Legends, and more; Pro adds graded-wallet money on each side.
REST API with OpenAPI 3.1
Read the same data through a REST API with an OpenAPI 3.1 contract.
SDKs for TypeScript, Python, Go
Official SDKs in TypeScript, Python, and Go wrap the API.
Hosted MCP server
A hosted MCP server with 55 read-only tools, plus a no-key sandbox that answers documented calls with example data.
Read-only
Reads public Polymarket data and never places trades.
Key Strengths
Works Well With
Polygon PoS
Ship faster than your competition
Free RPC across 77+ chains. Spin up an endpoint in under 30 seconds.
Compare
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