EsportsOdds is a data API service focused on Counter-Strike 2 esports, providing match data, team and player statistics, tournament information, and a single market odds line. The API is designed for developers, data product creators, and trading desks, offering both REST and WebSocket endpoints. It delivers real output from the same API that users would call, with the market odds line refreshed on the platform's ingest cadence. The service is informational only and does not constitute financial advice. The API features a plain REST interface with Authorization Bearer authentication, complemented by a WebSocket update stream for real time data. No SDK is required, and the API works with any programming language. Every response is documented in an OpenAPI reference. A key feature is the append only odds history: lines are never overwritten, and each capture is appended with its timestamp. This allows users to replay market movements through a match, such as pre game drift or map one swings, and backtest against the exact prices that existed at the time. Currently, match winner lines are available, with additional markets shipping as data clears the same quality bar. The service also provides stable IDs, a single schema, and a push stream to wire scores and odds into products without maintaining a scraper. Typical use cases include integrating normalized player and team stats across tournaments alongside a market odds line for publishing, modeling against historical odds data tick by tick, and building data products that require reliable esports information. The workflow involves creating an API key, calling the REST API, and optionally opening the WebSocket update stream. The service covers Counter-Strike 2 as its primary title, with additional esports titles listed on the platform. EsportsOdds also offers supplementary resources such as guides on CS2 metrics and odds concepts, a methodology page, an OpenAPI reference, a glossary of Counter-Strike terms, a blog with data drops and engineering notes, and free odds math calculators. Technical requirements are minimal, as the API is language agnostic and uses standard HTTP and WebSocket protocols. Pricing is a single plan at 99 dollars per month, which covers every endpoint, the WebSocket stream, and 10,000 requests. Higher volume options are available by contacting the service. A 7 day free trial is offered with a credit card required, and users can cancel at any time. The service is production ready in minutes and does not involve sales calls or tiered metering surprises.