Build a Telegram bot with AI: write requirements and acceptance checks first

“Make me a task bot” starts a conversation, but leaves important decisions unresolved. Who owns each task? What happens when someone submits an invalid number? What result counts as success? A short requirement and a few observable checks make AI-assisted development much easier to assess.

The personal task-bot example below is an original design exercise. Its commands, wording, and test records are suggestions to adapt, rather than a built-in template or a guarantee about every generated version.

Answer six questions before generating code

Describe the behavior in ordinary language:

1. Audience: Is the bot for individuals, group members, or administrators? Where will the first version work?
2. Trigger: Does someone type a command, tap a button, or send free text?
3. Visible result: What should appear after success, including identifiers and next steps?
4. Stored information: What must survive beyond the current message?
5. Ownership: Who may read or change each record?
6. Failure behavior: How should empty input, missing identifiers, repeated actions, and temporary errors be handled?

For a first release, “a private-chat task list” is a useful boundary. Group administration, scheduled reminders, shared tasks, and external integrations can wait. Each additional trigger introduces more behavior to verify.

A requirement you can adapt

Start with this specification and replace the rules that do not fit:

Create a personal task bot for Telegram private chats only. Support /start, /help, /add task text, /list, and /done task number. Saving a task returns a stable identifier and the original text. Lists show only the current user's unfinished tasks. Users may read and complete only their own tasks. Empty tasks, invalid identifiers, and missing tasks receive a short explanation without changing existing records. Completing a task twice reports that it is already complete and creates nothing. Unknown commands show help. Photos, stickers, and other non-text input receive usage guidance and are not saved as tasks. Keep tasks in persistent storage so unfinished items remain available when the user reopens the chat. The first release needs no scheduled reminders, shared tasks, external APIs, or runtime AI Q&A. Before generating code, summarize the requirement and list any decisions I need to confirm.

This separates input, records, access rules, and output. For a book-club poll, keep the structure but define whether votes can change, when voting closes, and who may see results before choosing the interface.

Make success observable

Record the input, expected result, and actual result. A minimal check set might be:

• User A adds “buy cat food,” receives an identifier, and sees the item in the unfinished list.
• User B cannot see A's task or complete it by submitting its identifier.
• Completing the task removes it from A's unfinished list; repeating the action creates no record.
• Empty /add input, nonnumeric identifiers, and nonexistent identifiers leave the record count unchanged.
• Photos, stickers, and unknown commands receive the agreed guidance.
• Reopening the chat and requesting the list still returns earlier unfinished tasks.

The final check tests that particular scenario. One successful run does not establish protection against every data-loss condition. Use a few fictional records and keep notes or screenshots so later changes are easier to compare.

Review the requirement, the checks, and the real bot separately

BotFatherV2's AI development documentation says that chatting does not generate or deploy code: users review the requirement card and explicitly generate a version. Type, module, and isolated-message checks run separately from the coding agent. Real commands, permissions, and persistence still need verification in Telegram. These details were checked on October 9, 2026.

The requirement review asks whether the intended behavior was understood. The validation report detects some code problems. Real interaction checks whether someone can finish the task. Keep all three results distinct.

BotFatherV2 supports creating and modifying Telegram bots through AI conversation; its getting-started guide explains connecting and publishing. It is an independent product, separate from Telegram's official BotFather. AI-assisted development does not automatically give the resulting bot autonomous agent capabilities. The current beta does not add paid runtime AI integrations, and its fixed SDK surface excludes arbitrary npm modules and Node/Bun APIs.

Request changes as specific behavior

A useful follow-up names both the change and the results that must remain valid: “Add a completed-task view to /list, preserve user isolation, and keep existing identifiers stable.” Then rerun the checks involving lists, identifiers, and ownership.

One clear change at a time is easier to assess than simultaneously adding reminders, search, sharing, and AI summaries. Requirements and interaction records give you a concrete basis for deciding whether the next version is ready.

Sources and verification date

• BitBear Studio, BotFatherV2, Build with AI, English product documentation; no publication date displayed. Checked October 9, 2026.
• BitBear Studio, BotFatherV2, Your first Telegram bot, English product documentation; no publication date displayed. Checked October 9, 2026.