0xinsider

0xinsider Developer API and MCP

0xinsider is Polymarket analytics for sports and esports in real-time. The Developer API returns the same Polymarket sports and esports data, typed, for agents, bots, dashboards, and research tools. Start with API discovery. Then pick an operation and its schema from the OpenAPI specification. Data endpoints take an Authorization: Bearer header carrying an OAuth 2.1 access token (for apps and MCP clients that sign the user in) or an API key (for your own scripts). Discovery and health endpoints are public.

When to use this

Use the API for current large trades, tracked-wallet analytics, market search, sharp-money flow, reports, or durable event replay. Use the npm package for a local stdio MCP client. Call the Streamable HTTP MCP endpoint when the client can send an Authorization header.

• Developer resource index: https://0xinsider.com/developers.json
• API discovery: https://0xinsider.com/api/v1
• OpenAPI 3.1: https://0xinsider.com/api/v1/openapi.json
• Full reference: https://0xinsider.com/llms-full.txt
• Agent instructions: https://0xinsider.com/agents.md
• Remote MCP transport: https://api.0xinsider.com/api/v1/mcp
• MCP server card: https://0xinsider.com/.well-known/mcp
• Documentation MCP server (no credential): https://docs.0xinsider.com/mcp
• Official package: https://www.npmjs.com/package/@0xinsider/mcp
• CLI install: npm install --global @0xinsider/mcp, then run 0xinsider --help
• Authentication (OAuth 2.1 and API keys): https://0xinsider.com/auth.md
• OAuth authorization server metadata: https://api.0xinsider.com/.well-known/oauth-authorization-server
• API versioning: https://0xinsider.com/api-versioning.md