Initial

2025-04-01 17:48:16 +03:00 · 2025-04-01 17:48:16 +03:00 · 42e446cea0
commit 42e446cea0
13 changed files with 1131 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,72 @@
+### VisualStudioCode template
+.vscode/
+
+# Local History for Visual Studio Code
+.history/
+
+# Built Visual Studio Code Extensions
+*.vsix
+
+### GoLand+all template
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+
+# User-specific stuff
+.idea/
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+
+### Go template
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Output of the go coverage tool, specifically when used with LiteIDE
+*.out
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+
+.gitlab-ci-local
+local/
+log_file.yaml
+session.json
+bin/
+.env
+.cursor/
--- a/.golangci.yaml
+++ b/.golangci.yaml
@ -0,0 +1,129 @@
+run:
+  concurrency: 4
+  timeout: 10m
+  issues-exit-code: 2
+  tests: true
+  build-tags: []
+  allow-parallel-runners: true
+  allow-serial-runners: true
+  go: '1.24'
+
+output:
+  formats:
+    - format: colored-line-number
+  print-issued-lines: true
+  print-linter-name: true
+  path-prefix: ""
+  sort-results: true
+  sort-order:
+    - linter
+    - severity
+    - file
+  show-stats: true
+
+linters:
+  enable:
+    - errcheck
+    - govet
+    - gosimple
+    - ineffassign
+    - staticcheck
+    - unused
+    - depguard
+    - asciicheck
+    - bodyclose
+    - canonicalheader
+    - copyloopvar
+    - dupl
+    - errorlint
+    - gocheckcompilerdirectives
+    - gochecknoinits
+    - gocognit
+    - goconst
+    - gocritic
+    - gocyclo
+    - gosec
+    - grouper
+    - inamedparam
+    - lll
+    - makezero
+    - nestif
+    - nilerr
+    - nilnil
+    - nlreturn
+    - noctx
+    - perfsprint
+    - prealloc
+    - revive
+    - testifylint
+    - whitespace
+    - importas
+    - wrapcheck
+    - nolintlint
+
+linters-settings:
+  lll:
+    line-length: 150
+
+  goimports:
+    local-prefixes: "gitlab.com/v8s/trating"
+
+  depguard:
+    rules:
+      configuration:
+        files:
+          - $all
+          - "!**/internal/config/*.go"
+        deny:
+          - pkg: "github.com/spf13/viper"
+            desc: Should be used only in config package, to avoid boiler plate
+
+      replace-std:
+        list-mode: lax
+        files:
+          - "**/internal/**/*.go"
+        deny:
+          - pkg: "errors"
+            desc: Use github.com/pkg/errors for proper callstack logging (check README.md)
+          - pkg: "log"
+            desc: Use github.com/rs/zerolog/log as replacement
+
+  importas:
+    no-unaliased: true
+    alias:
+      # enforce easycfg like usage
+      - pkg: github.com/spf13/pflag
+        alias: cfg
+
+  wrapcheck:
+    ignoreSigs:
+      - github.com/pkg/errors.Wrap(
+      - github.com/pkg/errors.Wrapf(
+      - github.com/pkg/errors.New(
+
+  gocyclo:
+    min-complexity: 15
+
+  dupl:
+    threshold: 100
+
+issues:
+  exclude-dirs-use-default: true
+  exclude-files: []
+  exclude-rules:
+    - path: _test\.go
+      linters:
+        - gocyclo
+        - errcheck
+        - dupl
+        - gosec
+        - lll
+    - path: internal/config/
+      linters:
+        - importas
+    - path: cmd/.*\.go
+      text: "exitAfterDefer"
+      linters:
+        - gocritic
+    - text: "should be written without leading space as"
+      linters: [nolintlint]
--- a/Taskfile.yml
+++ b/Taskfile.yml
@ -0,0 +1,40 @@
+# https://taskfile.dev
+
+version: '3'
+
+dotenv: [".env"]
+
+tasks:
+  mod:
+    desc: Sync go.mod
+    cmds:
+      - go mod download
+      - go mod tidy
+
+  run:test:
+    desc: Run test command
+    cmds:
+      - go run ./cmd/test/...
+
+  run:
+    desc: Run CLI app
+    cmds:
+      - go run ./. {{.CLI_ARGS}}
+
+  build:
+    cmds:
+      - mkdir -p ./bin
+      - go build -o ./bin/telegram-mcp ./.
+
+  install:
+    desc: Install MCP server to user's local bin
+    deps: [build]
+    cmds:
+      - cp ./bin/telegram-mcp ~/.local/bin/
+      - chmod +x ~/.local/bin/telegram-mcp
+
+  lint:
+    desc: Run linter
+    cmd: golangci-lint run ./...
+
+
--- a/auth.go
+++ b/auth.go
@ -0,0 +1,62 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"telegram-mcp/internal/tg"
+
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v3"
+)
+
+func authCommand(_ context.Context, cmd *cli.Command) error {
+	phone := cmd.String("phone")
+	appID := cmd.Root().Int("app-id")
+	apiHash := cmd.Root().String("api-hash")
+	sessionPath := cmd.Root().String("session")
+
+	log.Info().
+		Str("phone", phone).
+		Str("api-hash", apiHash).
+		Str("session", sessionPath).
+		Int64("app-id", appID).
+		Msg("Authenticate with Telegram")
+
+	err := tg.Auth(phone, appID, apiHash, sessionPath)
+	if err != nil {
+		log.Fatal().Err(err).Msg("Failed to authenticate with Telegram")
+	}
+
+	c := struct {
+		Telegram struct {
+			Command string `json:"command"`
+			Env     struct {
+				AppID   string `json:"TG_APP_ID"`
+				ApiHash string `json:"TG_API_HASH"`
+			} `json:"env"`
+		} `json:"telegram"`
+	}{
+		Telegram: struct {
+			Command string `json:"command"`
+			Env     struct {
+				AppID   string `json:"TG_APP_ID"`
+				ApiHash string `json:"TG_API_HASH"`
+			} `json:"env"`
+		}{
+			Command: "telegram-mcp",
+			Env: struct {
+				AppID   string `json:"TG_APP_ID"`
+				ApiHash string `json:"TG_API_HASH"`
+			}{
+				AppID:   fmt.Sprintf("%d", appID),
+				ApiHash: apiHash,
+			},
+		},
+	}
+
+	data, _ := json.MarshalIndent(c, "", "\t")
+	log.Info().RawJSON("config", data).Msg("Successfully authenticated with Telegram")
+
+	return nil
+}
--- a/cmd/test/main.go
+++ b/cmd/test/main.go
@ -0,0 +1,79 @@
+package main
+
+import (
+	"context"
+	"os"
+	"os/signal"
+	"strconv"
+
+	"telegram-mcp/internal/tg"
+
+	"github.com/pkg/errors"
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+)
+
+func main() {
+
+	zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
+	log.Logger = log.Output(zerolog.ConsoleWriter{
+		Out:        os.Stderr,
+		TimeFormat: zerolog.TimeFormatUnix,
+	})
+
+	appIDStr, apiHash, sessionPath := os.Getenv("TG_APP_ID"), os.Getenv("TG_API_HASH"), os.Getenv("TG_SESSION_PATH")
+	if appIDStr == "" {
+		log.Fatal().Msg("TG_APP_ID is required")
+	}
+	if apiHash == "" {
+		log.Fatal().Msg("TG_API_HASH is required")
+	}
+	if sessionPath == "" {
+		log.Fatal().Msg("TG_SESSION_PATH is required")
+	}
+
+	appID, err := strconv.Atoi(appIDStr)
+	if err != nil {
+		log.Fatal().Err(err).Msg("TG_APP_ID app id")
+	}
+
+	ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt)
+	defer cancel()
+
+	client := tg.New(appID, apiHash, sessionPath).T
+
+	if err := client.Run(ctx, func(ctx context.Context) error {
+		self, err := client.Self(ctx)
+		if err != nil {
+			return errors.Wrap(err, "get self")
+		}
+
+		log.Info().
+			Str("first_name", self.FirstName).
+			Str("last_name", self.LastName).
+			Str("username", self.Username).
+			Int64("id", self.ID).
+			Msg("Logged in as")
+
+		messages, err := getUnreadMessages(ctx, client)
+		if err != nil {
+			return errors.Wrap(err, "get unread messages")
+		}
+
+		for _, msg := range messages {
+			log.Info().
+				Int("id", msg.ID).
+				Str("text", msg.Text).
+				Time("date", msg.Date).
+				Int64("from_id", msg.FromID).
+				Str("from_name", msg.FromName).
+				Str("chat_type", msg.ChatType).
+				Str("chat_title", msg.ChatTitle).
+				Msg("Unread message")
+		}
+
+		return nil
+	}); err != nil {
+		log.Fatal().Err(err).Msg("client error")
+	}
+}
--- a/cmd/test/unread.go
+++ b/cmd/test/unread.go
@ -0,0 +1,280 @@
+package main
+
+import (
+	"context"
+	"sort"
+	"time"
+
+	"github.com/gotd/td/telegram"
+	"github.com/gotd/td/tg"
+	"github.com/pkg/errors"
+	"github.com/rs/zerolog/log"
+	cfg "github.com/spf13/pflag"
+	"golang.org/x/time/rate"
+)
+
+const (
+	defaultMessageLimit = 10
+	maxDialogsLimit     = 100
+	rateLimitPerSec     = 5
+)
+
+//nolint:gochecknoglobals // CLI flags must be global
+var (
+	messageLimit = cfg.Int("limit", defaultMessageLimit, "limit of unread messages to fetch")
+)
+
+//nolint:gochecknoglobals // Rate limiter should be global for consistent rate limiting across all functions
+var telegramLimiter = rate.NewLimiter(rate.Limit(rateLimitPerSec), 1)
+
+// UnreadMessage represents a simplified message structure
+type UnreadMessage struct {
+	ID        int
+	Text      string
+	Date      time.Time
+	FromID    int64
+	FromName  string
+	ChatType  string
+	ChatTitle string
+}
+
+// DialogWithUnread represents a dialog with its unread count and latest message ID
+type DialogWithUnread struct {
+	Dialog      *tg.Dialog
+	UnreadCount int
+	TopMessage  int
+}
+
+// getUnreadMessages fetches unread messages from different users
+//
+//nolint:gocognit,gocyclo // complexity is inherent to handling different types of Telegram messages and users
+func getUnreadMessages(ctx context.Context, client *telegram.Client) ([]UnreadMessage, error) {
+	if err := telegramLimiter.Wait(ctx); err != nil {
+		return nil, errors.Wrap(err, "rate limiter wait")
+	}
+
+	api := client.API()
+	dialogsClass, err := api.MessagesGetDialogs(ctx, &tg.MessagesGetDialogsRequest{
+		OffsetPeer:    &tg.InputPeerEmpty{},
+		OffsetDate:    0,
+		OffsetID:      0,
+		Limit:         maxDialogsLimit,
+		Hash:          0,
+		Flags:         0,
+		ExcludePinned: false,
+		FolderID:      0,
+	})
+	if err != nil {
+		return nil, errors.Wrap(err, "get dialogs")
+	}
+
+	var dialogs *tg.MessagesDialogs
+	switch d := dialogsClass.(type) {
+	case *tg.MessagesDialogs:
+		dialogs = d
+	case *tg.MessagesDialogsSlice:
+		dialogs = &tg.MessagesDialogs{
+			Dialogs:  d.Dialogs,
+			Messages: d.Messages,
+			Chats:    d.Chats,
+			Users:    d.Users,
+		}
+	default:
+		return nil, errors.New("unexpected dialogs response type")
+	}
+
+	// Create a slice of dialogs with unread count
+	dialogsWithUnread := make([]DialogWithUnread, 0, len(dialogs.Dialogs))
+	for _, dialog := range dialogs.Dialogs {
+		dialogItem, ok := dialog.(*tg.Dialog)
+		if !ok {
+			continue
+		}
+
+		if dialogItem.UnreadCount > 0 {
+			dialogsWithUnread = append(dialogsWithUnread, DialogWithUnread{
+				Dialog:      dialogItem,
+				UnreadCount: dialogItem.UnreadCount,
+				TopMessage:  dialogItem.TopMessage,
+			})
+		}
+	}
+
+	// Sort dialogs by TopMessage in descending order (newest first)
+	sort.Slice(dialogsWithUnread, func(i, j int) bool {
+		return dialogsWithUnread[i].TopMessage > dialogsWithUnread[j].TopMessage
+	})
+
+	// Map to store the latest message from each user
+	userMessages := make(map[int64]UnreadMessage)
+	processedCount := 0
+
+	for _, dialogWithUnread := range dialogsWithUnread {
+		dialogItem := dialogWithUnread.Dialog
+
+		var inputPeer tg.InputPeerClass
+		var chatType, chatTitle string
+		var fromID int64
+		var fromName string
+
+		switch peer := dialogItem.Peer.(type) {
+		case *tg.PeerUser:
+			for _, userItem := range dialogs.Users {
+				user, ok := userItem.(*tg.User)
+				if !ok || user.ID != peer.UserID {
+					continue
+				}
+
+				inputPeer = &tg.InputPeerUser{
+					UserID:     user.ID,
+					AccessHash: user.AccessHash,
+				}
+				chatType = "user"
+				chatTitle = user.FirstName + " " + user.LastName
+				fromID = user.ID
+				fromName = chatTitle
+
+				break
+			}
+		case *tg.PeerChat:
+			inputPeer = &tg.InputPeerChat{
+				ChatID: peer.ChatID,
+			}
+			chatType = "chat"
+			for _, chatItem := range dialogs.Chats {
+				chat, ok := chatItem.(*tg.Chat)
+				if !ok || chat.ID != peer.ChatID {
+					continue
+				}
+
+				chatTitle = chat.Title
+
+				break
+			}
+		case *tg.PeerChannel:
+			for _, channelItem := range dialogs.Chats {
+				channel, ok := channelItem.(*tg.Channel)
+				if !ok || channel.ID != peer.ChannelID {
+					continue
+				}
+
+				inputPeer = &tg.InputPeerChannel{
+					ChannelID:  channel.ID,
+					AccessHash: channel.AccessHash,
+				}
+				chatType = "channel"
+				chatTitle = channel.Title
+
+				break
+			}
+		}
+
+		if inputPeer == nil {
+			continue
+		}
+
+		if err := telegramLimiter.Wait(ctx); err != nil {
+			return nil, errors.Wrap(err, "rate limiter wait")
+		}
+
+		messagesClass, err := api.MessagesGetHistory(ctx, &tg.MessagesGetHistoryRequest{
+			Peer:       inputPeer,
+			OffsetID:   0,
+			OffsetDate: 0,
+			AddOffset:  0,
+			Limit:      1, // We only need the latest message
+			MaxID:      0,
+			MinID:      0,
+			Hash:       0,
+		})
+		if err != nil {
+			log.Error().Err(err).Msg("failed to get messages")
+
+			continue
+		}
+
+		var messages *tg.MessagesMessages
+		switch m := messagesClass.(type) {
+		case *tg.MessagesMessages:
+			messages = m
+		case *tg.MessagesMessagesSlice:
+			messages = &tg.MessagesMessages{
+				Messages: m.Messages,
+				Chats:    m.Chats,
+				Users:    m.Users,
+			}
+		case *tg.MessagesChannelMessages:
+			messages = &tg.MessagesMessages{
+				Messages: m.Messages,
+				Chats:    m.Chats,
+				Users:    m.Users,
+			}
+		default:
+			log.Error().Msg("unexpected messages response type")
+
+			continue
+		}
+
+		for _, msg := range messages.Messages {
+			message, ok := msg.(*tg.Message)
+			if !ok {
+				continue
+			}
+
+			if message.Out {
+				continue
+			}
+
+			if message.FromID != nil {
+				if from, ok := message.FromID.(*tg.PeerUser); ok {
+					for _, userItem := range messages.Users {
+						user, ok := userItem.(*tg.User)
+						if !ok || user.ID != from.UserID {
+							continue
+						}
+
+						fromID = user.ID
+						fromName = user.FirstName + " " + user.LastName
+
+						break
+					}
+				}
+			}
+
+			unreadMsg := UnreadMessage{
+				ID:        message.ID,
+				Text:      message.Message,
+				Date:      time.Unix(int64(message.Date), 0),
+				FromID:    fromID,
+				FromName:  fromName,
+				ChatType:  chatType,
+				ChatTitle: chatTitle,
+			}
+
+			// Only store if we haven't seen this user yet or if this message is newer
+			if existingMsg, exists := userMessages[fromID]; !exists || unreadMsg.Date.After(existingMsg.Date) {
+				userMessages[fromID] = unreadMsg
+				processedCount++
+			}
+
+			break // We only need the latest message
+		}
+
+		if len(userMessages) >= *messageLimit {
+			break
+		}
+	}
+
+	// Convert map to slice and sort by date
+	messages := make([]UnreadMessage, 0, len(userMessages))
+	for _, msg := range userMessages {
+		messages = append(messages, msg)
+	}
+
+	// Sort messages by date in descending order
+	sort.Slice(messages, func(i, j int) bool {
+		return messages[i].Date.After(messages[j].Date)
+	})
+
+	return messages, nil
+}
--- a/go.mod
+++ b/go.mod
@ -0,0 +1,59 @@
+module telegram-mcp
+
+go 1.24
+
+require (
+	github.com/gotd/td v0.121.0
+	github.com/metoro-io/mcp-golang v0.8.0
+	github.com/pkg/errors v0.9.1
+	github.com/rs/zerolog v1.34.0
+	github.com/spf13/pflag v1.0.6
+	github.com/urfave/cli/v3 v3.1.0
+	golang.org/x/time v0.11.0
+)
+
+require (
+	github.com/bahlo/generic-list-go v0.2.0 // indirect
+	github.com/buger/jsonparser v1.1.1 // indirect
+	github.com/cenkalti/backoff/v4 v4.3.0 // indirect
+	github.com/coder/websocket v1.8.13 // indirect
+	github.com/dlclark/regexp2 v1.11.5 // indirect
+	github.com/fatih/color v1.18.0 // indirect
+	github.com/ghodss/yaml v1.0.0 // indirect
+	github.com/go-faster/errors v0.7.1 // indirect
+	github.com/go-faster/jx v1.1.0 // indirect
+	github.com/go-faster/xor v1.0.0 // indirect
+	github.com/go-faster/yaml v0.4.6 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/gotd/ige v0.2.2 // indirect
+	github.com/gotd/neo v0.1.5 // indirect
+	github.com/invopop/jsonschema v0.12.0 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ogen-go/ogen v1.10.1 // indirect
+	github.com/segmentio/asm v1.2.0 // indirect
+	github.com/tidwall/gjson v1.18.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.1 // indirect
+	github.com/tidwall/sjson v1.2.5 // indirect
+	github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect
+	go.opentelemetry.io/otel v1.35.0 // indirect
+	go.opentelemetry.io/otel/metric v1.35.0 // indirect
+	go.opentelemetry.io/otel/trace v1.35.0 // indirect
+	go.uber.org/atomic v1.11.0 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	golang.org/x/crypto v0.36.0 // indirect
+	golang.org/x/exp v0.0.0-20230725093048-515e97ebf090 // indirect
+	golang.org/x/mod v0.24.0 // indirect
+	golang.org/x/net v0.37.0 // indirect
+	golang.org/x/sync v0.12.0 // indirect
+	golang.org/x/sys v0.31.0 // indirect
+	golang.org/x/text v0.23.0 // indirect
+	golang.org/x/tools v0.31.0 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	rsc.io/qr v0.2.0 // indirect
+)
--- a/go.sum
+++ b/go.sum
@ -0,0 +1,139 @@
+github.com/bahlo/generic-list-go v0.2.0 h1:5sz/EEAK+ls5wF+NeqDpk5+iNdMDXrh3z3nPnH1Wvgk=
+github.com/bahlo/generic-list-go v0.2.0/go.mod h1:2KvAjgMlE5NNynlg/5iLrrCCZ2+5xWbdbCW3pNTGyYg=
+github.com/buger/jsonparser v1.1.1 h1:2PnMjfWD7wBILjqQbt530v576A/cAbQvEW9gGIpYMUs=
+github.com/buger/jsonparser v1.1.1/go.mod h1:6RYKKt7H4d4+iWqouImQ9R2FZql3VbhNgx27UK13J/0=
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--- a/internal/tg/auth.go
+++ b/internal/tg/auth.go
@ -0,0 +1,63 @@
+package tg
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/gotd/td/telegram"
+	"github.com/gotd/td/telegram/auth"
+	"github.com/gotd/td/tg"
+	"github.com/rs/zerolog/log"
+)
+
+func Auth(phone string, appID int64, appHash string, sessionPath string) error {
+	client := telegram.NewClient(int(appID), appHash, telegram.Options{
+		SessionStorage: &telegram.FileSessionStorage{
+			Path: sessionPath,
+		},
+	})
+
+	sessionDir := filepath.Dir(sessionPath)
+	if err := os.MkdirAll(sessionDir, 0700); err != nil {
+		return fmt.Errorf("mkdir(%s): %w", sessionDir, err)
+	}
+
+	if err := client.Run(context.Background(), func(ctx context.Context) error {
+		// Authenticate if needed
+		flow := auth.NewFlow(auth.Constant(phone, "", auth.CodeAuthenticatorFunc(func(ctx context.Context, _ *tg.AuthSentCode) (string, error) {
+			fmt.Print("Enter code: ")
+			code, err := bufio.NewReader(os.Stdin).ReadString('\n')
+			if err != nil {
+				return "", err
+			}
+			return strings.TrimSpace(code), nil
+		})), auth.SendCodeOptions{})
+
+		if err := client.Auth().IfNecessary(ctx, flow); err != nil {
+			return fmt.Errorf("auth: %w", err)
+		}
+
+		// Get current user info
+		self, err := client.Self(ctx)
+		if err != nil {
+			return fmt.Errorf("get self info: %w", err)
+		}
+
+		log.Info().
+			Str("first_name", self.FirstName).
+			Str("last_name", self.LastName).
+			Str("username", self.Username).
+			Int64("id", self.ID).
+			Msg("Logged in as")
+
+		return nil
+	}); err != nil {
+		return fmt.Errorf("client error: %w", err)
+	}
+
+	return nil
+}
--- a/internal/tg/client.go
+++ b/internal/tg/client.go
@ -0,0 +1,20 @@
+package tg
+
+import "github.com/gotd/td/telegram"
+
+type Client struct {
+	T *telegram.Client
+}
+
+func New(appID int, appHash, sessionPath string) *Client {
+	client := telegram.NewClient(appID, appHash, telegram.Options{
+		SessionStorage: &telegram.FileSessionStorage{
+			Path: sessionPath,
+		},
+		NoUpdates: true,
+	})
+
+	return &Client{
+		T: client,
+	}
+}
--- a/internal/tg/me.go
+++ b/internal/tg/me.go
@ -0,0 +1,51 @@
+package tg
+
+import (
+	"context"
+	"encoding/json"
+
+	mcp "github.com/metoro-io/mcp-golang"
+	"github.com/pkg/errors"
+)
+
+type MeResponse struct {
+	ID        int64  `json:"id" jsonschema:"required,description=User ID"`
+	FirstName string `json:"first_name" jsonschema:"required,description=User's first name"`
+	LastName  string `json:"last_name" jsonschema:"description=User's last name"`
+	Username  string `json:"username" jsonschema:"description=User's username"`
+}
+
+type EmptyArguments struct{}
+
+func (c *Client) GetMe(_ EmptyArguments) (*mcp.ToolResponse, error) {
+	var toolResponse *mcp.ToolResponse
+
+	if err := c.T.Run(context.Background(), func(ctx context.Context) error {
+		self, err := c.T.Self(ctx)
+		if err != nil {
+			return errors.Wrap(err, "failed to get self info")
+		}
+
+		// Create response
+		response := MeResponse{
+			ID:        self.ID,
+			FirstName: self.FirstName,
+			LastName:  self.LastName,
+			Username:  self.Username,
+		}
+
+		// Convert response to JSON
+		jsonData, err := json.Marshal(response)
+		if err != nil {
+			return errors.Wrap(err, "failed to marshal response")
+		}
+
+		toolResponse = mcp.NewToolResponse(mcp.NewTextContent(string(jsonData)))
+
+		return nil
+	}); err != nil {
+		return nil, errors.Wrap(err, "invalid session")
+	}
+
+	return toolResponse, nil
+}
--- a/main.go
+++ b/main.go
@ -0,0 +1,79 @@
+package main
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v3"
+)
+
+const (
+	dir = ".telegram-mcp"
+)
+
+func main() {
+	zerolog.TimeFieldFormat = zerolog.TimeFormatUnix
+	log.Logger = log.Output(zerolog.ConsoleWriter{Out: os.Stderr})
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		log.Fatal().Err(err).Msg("Failed to get home dir")
+	}
+
+	configDir := filepath.Join(homeDir, dir)
+	sesionPath := filepath.Join(configDir, "session.json")
+
+	app := &cli.Command{
+		Name:  "telegram-mcp",
+		Usage: "Telegram MCP server",
+		Flags: []cli.Flag{
+			&cli.IntFlag{
+				Name:     "app-id",
+				Usage:    "Telegram App ID",
+				Required: true,
+				Sources:  cli.EnvVars("TG_APP_ID"),
+			},
+			&cli.StringFlag{
+				Name:     "api-hash",
+				Usage:    "Telegram API Hash",
+				Required: true,
+				Sources:  cli.EnvVars("TG_API_HASH"),
+			},
+			&cli.StringFlag{
+				Name:    "session",
+				Usage:   "Path to session file",
+				Value:   sesionPath,
+				Sources: cli.EnvVars("TG_SESSION_PATH"),
+			},
+			&cli.BoolFlag{
+				Name:        "dry",
+				Usage:       "Test configuration",
+				Local:       true,
+				HideDefault: true,
+			},
+		},
+		Commands: []*cli.Command{
+			{
+				Name:  "auth",
+				Usage: "Authenticate with Telegram",
+				Flags: []cli.Flag{
+					&cli.StringFlag{
+						Name:     "phone",
+						Usage:    "Phone number to authenticate with",
+						Required: true,
+						Aliases:  []string{"p"},
+					},
+				},
+				Action: authCommand,
+			},
+		},
+		Action: serve,
+	}
+
+	if err := app.Run(context.Background(), os.Args); err != nil {
+		log.Fatal().Msg(err.Error())
+	}
+}
--- a/serve.go
+++ b/serve.go
@ -0,0 +1,58 @@
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"os"
+	"telegram-mcp/internal/tg"
+
+	mcp "github.com/metoro-io/mcp-golang"
+	"github.com/metoro-io/mcp-golang/transport/stdio"
+	"github.com/rs/zerolog/log"
+	"github.com/urfave/cli/v3"
+)
+
+func serve(ctx context.Context, cmd *cli.Command) error {
+	appID := cmd.Int("app-id")
+	appHash := cmd.String("api-hash")
+	sessionPath := cmd.String("session")
+	dryRun := cmd.Bool("dry")
+
+	_, err := os.Stat(sessionPath)
+	if err != nil {
+		return fmt.Errorf("session file not found(%s): %w", sessionPath, err)
+	}
+
+	server := mcp.NewServer(stdio.NewStdioServerTransport())
+	client := tg.New(int(appID), appHash, sessionPath)
+
+	if dryRun {
+		answer, err := client.GetMe(tg.EmptyArguments{})
+		if err != nil {
+			return fmt.Errorf("get user: %w", err)
+		}
+
+		data, err := json.MarshalIndent(answer, "", "  ")
+		if err != nil {
+			return fmt.Errorf("marshal: %w", err)
+		}
+
+		log.Info().RawJSON("answer", data).Msg("Check GetMe: OK")
+
+		return nil
+	}
+
+	err = server.RegisterTool("me", "Get current Telegram account info", client.GetMe)
+	if err != nil {
+		return fmt.Errorf("register tool: %w", err)
+	}
+
+	if err := server.Serve(); err != nil {
+		return fmt.Errorf("serve: %w", err)
+	}
+
+	<-ctx.Done()
+
+	return nil
+}