mymmrac/telego

Telego is a strong, mature Go library for building Telegram bots, and it shows a lot of care in both API coverage and developer ergonomics. The main idea is excellent: mirror the Telegram Bot API one-to-one with Go types and methods, while still offering practical helpers for real bot development. The README is unusually thorough, with install instructions, long polling and webhook examples, handler examples, file upload/download flows, inline keyboards, Mini Apps, graceful shutdown, middleware, multi-bot webhooks, and links to external docs. The codebase also feels well maintained: generated types.go/methods.go keep the library aligned with Telegram’s API surface, while packages like telegohandler, telegoutil, and telegoapi separate core bot calls, routing, helper builders, and transport concerns cleanly. I especially liked that the HTTP layer is configurable, with fasthttp as the default but net/http support available, plus retry behavior, context-aware calls, token validation, webhook secret helpers, and clear warnings around debug logging and sensitive data.

The project also has a serious quality setup. There are many focused tests across bot options, methods, JSON handling, webhooks, handlers, setters, and utilities, plus a Taskfile for formatting, linting, generation, tests, race tests, coverage, example builds, and vulnerability checks. CI covers linting, tests, race tests, example builds, SonarCloud, and CodeQL, which is more production-minded than many open-source bot libraries. The examples are a major strength because Telegram bot development often fails at the “how do I actually wire this up?” stage, and Telego gives users many concrete starting points.

The main areas I’d improve are mostly around newcomer clarity and long-term confidence. Because the library intentionally tracks the full Telegram API, the generated files are large and can feel intimidating; a short architecture guide explaining what is generated versus hand-written would help contributors. The README is very complete, but it is also dense, so a “first bot in 5 minutes” path or recommended production setup could make onboarding smoother. It would also be useful to document versioning expectations around Telegram Bot API updates, generated-code review, and compatibility guarantees. Overall, Telego feels polished, practical, and actively engineered for real-world bot projects rather than just being a thin API wrapper.