---
phase: 38-telegram-bridge
verified: 2026-04-03T00:00:00Z
status: passed
score: 7/7 must-haves verified
re_verification: false
human_verification:
  - test: "Send a text message to the configured Telegram bot"
    expected: "Agent reply arrives prefixed with [AgentName]: within a few seconds"
    why_human: "Requires live Telegram token and bot running; cannot simulate Telegram updates in CI"
  - test: "Send a voice note to the Telegram bot"
    expected: "Bot replies with 'Transcribing...', then 'Heard: <transcript>', then an agent text reply and an OGG voice note"
    why_human: "Requires live Whisper + Piper runtime and a real Telegram connection"
  - test: "Complete the onboarding wizard through step 5 (Telegram), enter a valid bot token, click Validate"
    expected: "Green 'Connected to @botname' text appears; Continue button unlocks"
    why_human: "Visual/UX flow; requires live POST /api/telegram/token endpoint"
  - test: "Click Skip on the TelegramStep during onboarding"
    expected: "Wizard advances to step 6 (Root Directory) without error or saved token"
    why_human: "Navigation flow must be manually confirmed in browser"
---

# Phase 38: Telegram Bridge Verification Report

**Phase Goal:** The user can message any Nexus agent from their phone via Telegram — text and voice notes both work, agent identity is visible on every reply, and the bot is set up through guided onboarding with no manual token entry in config files
**Verified:** 2026-04-03
**Status:** PASSED
**Re-verification:** No — initial verification

---

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | A text message sent to the Telegram bot produces an agent reply prefixed with the agent name | VERIFIED | `relayToAgent()` prefixes with `[${agentName}]:` at line 169 of telegram.ts; wired into `bot.on("message:text")` handler |
| 2 | The bot runs via long polling with no public HTTPS endpoint | VERIFIED | `bot.api.deleteWebhook()` called before `bot.start()` (lines 288-291); `bot.start()` is fire-and-forget, no webhook registered |
| 3 | A voice note sent to the bot is transcribed and produces a text agent reply | VERIFIED | `bot.on("message:voice")` handler at line 262 → `processVoiceMessage()` downloads OGG, calls `voiceSvc.transcribe()`, calls `relayToAgent(..., voiceMode=true)` |
| 4 | The bot can send back an OGG voice note generated from TTS | VERIFIED | `relayToAgent()` in voice mode calls `synthesize()` + `transcodeToOggOpus()` + `ctx.replyWithVoice(InputFile(oggBuffer))` (lines 178-188) |
| 5 | The onboarding wizard includes a BotFather setup step that walks the user through creating a bot token | VERIFIED | `TelegramStep.tsx` (157 lines) has numbered BotFather instructions; inserted as step 5 in `NexusOnboardingWizard.tsx` |
| 6 | The token is validated with a live API call before saving | VERIFIED | `TelegramStep.tsx` POSTs to `/api/telegram/token`; route calls `tempBot.api.getMe()` before `nexusSettingsService().set()` |
| 7 | The step can be skipped without blocking onboarding completion | VERIFIED | TelegramStep has explicit Skip button calling `onNext` unconditionally (line 141-144 of TelegramStep.tsx); Continue requires `botUsername` but Skip does not |

**Score:** 7/7 truths verified

---

## Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `server/src/services/telegram.ts` | grammY bot lifecycle, text relay, voice handler, session map, agent prefix | VERIFIED | 322 lines (under 500 limit); exports `telegramService` and `TelegramService` type |
| `server/src/routes/telegram.ts` | POST /api/telegram/token validation, GET /api/telegram/status | VERIFIED | 70 lines; `telegramRoutes(db, svc)` factory with both endpoints |
| `ui/src/components/onboarding/TelegramStep.tsx` | BotFather instructions, token input, validation, skip button | VERIFIED | 157 lines; exports `TelegramStep`; full validation flow with success/error states |
| `ui/src/components/NexusOnboardingWizard.tsx` | Updated step flow with TelegramStep at step 5 | VERIFIED | 546 lines; step indicator reads "Step N of 6"; TelegramStep at `step === 5` |

---

## Key Link Verification

| From | To | Via | Status | Details |
|------|----|-----|--------|---------|
| `telegram.ts` | `chat.ts` | `chatService(db).createConversation`, `addMessage`, `listMessages` | WIRED | Lines 55, 139, 142, 162 — all three methods called with real arguments |
| `telegram.ts` | `puter-proxy.ts` | `puterProxyService(db).chatStream` async generator | WIRED | Lines 149-158 — `for await` loop collects full LLM response |
| `app.ts` | `telegram.ts` | `telegramService(db)` + conditional start on `telegramToken` | WIRED | Lines 180-181, 347-350 — service created, routes mounted, auto-start on boot |
| `telegram.ts` | `voice-pipeline.ts` | `voicePipelineService().transcribe` and `synthesize` | WIRED | Lines 220, 178-183 — both methods called in processVoiceMessage and relayToAgent |
| `telegram.ts` | Telegram Bot API CDN | `ctx.getFile()` + fetch download URL | WIRED | Lines 203, 209-210 — real CDN URL construction with token |
| `TelegramStep.tsx` | `POST /api/telegram/token` | `fetch("/api/telegram/token", { method: "POST" })` | WIRED | Line 25 — live validation fetch with JSON body |
| `NexusOnboardingWizard.tsx` | `TelegramStep.tsx` | import + render at step 5 | WIRED | Line 26 (import), line 448 (render inside `step === 5` block) |
| `telegram.ts` (routes) | bot restart | `svc.stop()` + `svc.start(token)` | WIRED | Lines 37-38 of telegram.ts routes — bot restarts after new token saved |

---

## Data-Flow Trace (Level 4)

| Artifact | Data Variable | Source | Produces Real Data | Status |
|----------|---------------|--------|--------------------|--------|
| `telegram.ts` `relayToAgent()` | `fullResponse` | `puterProxyService(db).chatStream()` async generator | Yes — real LLM stream collected chunk by chunk | FLOWING |
| `telegram.ts` `relayToAgent()` | `items` (history) | `chatSvc.listMessages(convId, { limit: 20 })` | Yes — real DB query via chatService | FLOWING |
| `telegram.ts` `processVoiceMessage()` | `text` (transcript) | `voiceSvc.transcribe(oggBuffer, "ogg")` | Yes — real Whisper call (degrades if unavailable) | FLOWING |
| `TelegramStep.tsx` | `botUsername` | `fetch POST /api/telegram/token` response | Yes — populated from live `getMe()` API call | FLOWING |

---

## Behavioral Spot-Checks

| Behavior | Command | Result | Status |
|----------|---------|--------|--------|
| Server TypeScript compiles clean | `cd /opt/nexus/server && pnpm exec tsc --noEmit` | No output (zero errors) | PASS |
| telegram.ts under 500 lines | `wc -l server/src/services/telegram.ts` | 322 lines | PASS |
| grammY installed in package.json | `grep "grammy" server/package.json` | Found `grammy@^2` | PASS |
| telegramService wired in app.ts | `grep "telegramService\|telegramRoutes\|telegramToken" server/src/app.ts` | All three present | PASS |
| TelegramStep in wizard step 5 | `grep "step === 5" ui/src/components/NexusOnboardingWizard.tsx` | `{step === 5 && <TelegramStep` | PASS |
| UI TypeScript — phase 38 files clean | `pnpm --filter @paperclipai/ui exec tsc --noEmit 2>&1 \| grep "TelegramStep\|telegram\|NexusOnboardingWizard"` | No errors in phase 38 files | PASS |

Note: The UI TypeScript build has 6 pre-existing errors in `AgentConfigForm.tsx`, `useNexusMode.ts`, `usePiperTts.ts`, `useVadRecorder.ts`, and `PersonalAssistant.tsx`. None touch phase 38 code.

---

## Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|-------------|-------------|--------|----------|
| TGRAM-01 | 38-01 | Single Telegram bot relays text messages bidirectionally between user and agents | SATISFIED | `bot.on("message:text")` → `relayToAgent()` → `puterProxyService().chatStream()` → `ctx.reply()` |
| TGRAM-02 | 38-01 | Agent replies prefixed with agent identity (e.g. `[PM]`, `[Engineer]`) | SATISFIED | Line 169: `const prefixed = \`[\${agentName}]: \${fullResponse}\`` |
| TGRAM-03 | 38-02 | Telegram voice messages transcribed (OGG → Whisper) and forwarded as text | SATISFIED | `bot.on("message:voice")` → `ctx.getFile()` → Telegram CDN fetch → `voiceSvc.transcribe(oggBuffer, "ogg")` |
| TGRAM-04 | 38-02 | Agent responses sent back as Telegram voice notes (TTS → OGG) | SATISFIED | `voiceSvc.synthesize()` → `transcodeToOggOpus()` → `ctx.replyWithVoice(InputFile(oggBuffer))` |
| TGRAM-05 | 38-01 | Telegram bridge uses long polling (no public HTTPS required) | SATISFIED | `bot.api.deleteWebhook()` then fire-and-forget `bot.start()`; no webhook URL registered |
| TGRAM-06 | 38-01, 38-02 | Telegram bridge is under 500 lines of code | SATISFIED | telegram.ts is 322 lines (322 < 500) |
| ONBRD-03 | 38-03 | Guided BotFather setup flow for Telegram bot token during onboarding | SATISFIED | `TelegramStep.tsx` with numbered instructions; POST validation; inserted at wizard step 5; skippable |

**All 7 requirement IDs satisfied. No orphaned requirements.**

---

## Anti-Patterns Found

| File | Line | Pattern | Severity | Impact |
|------|------|---------|----------|--------|
| None | — | — | — | — |

The three `return null` occurrences in `resolveDefaultAgent()` are correct guard clauses (no company or no agent configured), not stubs — they are handled at call site with "No agents configured" reply.

---

## Human Verification Required

### 1. End-to-end text message relay

**Test:** Configure a real Telegram bot token via POST /api/telegram/token, then send a text message to the bot from a phone.
**Expected:** Bot replies within a few seconds with `[AgentName]: <response>` where AgentName is the first configured agent.
**Why human:** Requires a live Telegram connection and a running agent — cannot simulate Telegram long-polling updates programmatically.

### 2. Voice note round-trip

**Test:** Send a voice note to the configured Telegram bot.
**Expected:** Bot replies with "Transcribing...", then "Heard: <transcript>", then a text reply and (if Piper is installed) an OGG voice note.
**Why human:** Requires Whisper + Piper runtime availability and a live Telegram bot connection.

### 3. Onboarding token validation UX

**Test:** Navigate to step 5 of the onboarding wizard, enter a valid Telegram bot token, click Validate.
**Expected:** Green "Connected to @botname" success text appears; Continue button becomes enabled.
**Why human:** Visual state transition and button enablement require browser rendering.

### 4. Onboarding skip flow

**Test:** Navigate to step 5 (Telegram), click Skip without entering a token.
**Expected:** Wizard advances to step 6 (Root Directory) with no error; no token is saved.
**Why human:** Step navigation flow must be manually confirmed in browser; `nexusSettingsService` state cannot be inspected without a running server.

---

## Gaps Summary

No gaps. All 7 observable truths verified. All 4 artifacts exist and are substantive (no stubs, no placeholders). All 8 key links are wired with real data flowing. TypeScript compiles cleanly for server; pre-existing UI errors are unrelated to this phase. Requirements TGRAM-01 through TGRAM-06 and ONBRD-03 are all satisfied.

---

_Verified: 2026-04-03_
_Verifier: Claude (gsd-verifier)_