diff --git a/assistant_bot/agent.py b/assistant_bot/agent.py
index d76e74d..c9feefd 100644
--- a/assistant_bot/agent.py
+++ b/assistant_bot/agent.py
@@ -1,30 +1,29 @@
 import json
 import logging
 import re
-from datetime import datetime, timezone
+from datetime import datetime
 from typing import Any
 from zoneinfo import ZoneInfo
 
 from telegram import Update
 from telegram.ext import ContextTypes
 
+from .agent_tools import execute_agent_tool, render_agent_tool_catalog
 from .ai import AIClientError
 from .config import CONVERSATION_HISTORY_LIMIT, MAX_AGENT_STEPS
-from .models import AgentDecision, ReminderParseResult
+from .models import AgentDecision
 from .prompts import ASSISTANT_SYSTEM_PROMPT
-from .reminders import parse_reminder
 from .storage import AssistantStorage
 from .telegram_utils import (
     escape_markdown_text,
     get_ai_client,
     get_storage,
     get_tz,
-    parse_positive_int,
     reply_markdown,
     require_user_id,
     typing_action,
 )
-from .time_utils import format_local_dt, to_utc_iso, utc_now
+from .time_utils import format_local_dt
 
 
 logger = logging.getLogger(__name__)
@@ -92,25 +91,7 @@ def build_agent_tool_prompt(tz: ZoneInfo) -> str:
         "читаемость. Для короткого простого ответа разметка не обязательна. "
         "Не добавляй декоративные эмодзи чаще одного раза на сообщение.\n\n"
         "Доступные tools:\n"
-        "- get_current_datetime {} - узнать текущее локальное и UTC-время.\n"
-        '- remember {"text": string} - сохранить важный долгосрочный факт о пользователе.\n'
-        '- list_memory {"limit": number} - показать сохраненную память.\n'
-        '- delete_memory {"id": number} - удалить запись памяти.\n'
-        '- create_note {"text": string} - сохранить заметку.\n'
-        '- list_notes {"limit": number} - показать заметки.\n'
-        '- delete_note {"id": number} - удалить заметку.\n'
-        '- create_reminder {"when": string, "text": string} - поставить напоминание. '
-        "when можно указывать как '30m', 'через 2 часа', '18:30', '2026-07-16 18:30'. "
-        "Если пользователь говорит 'завтра/послезавтра/через неделю', сам рассчитай "
-        "дату от текущего локального времени и передай 'YYYY-MM-DD HH:MM'.\n"
-        '- list_reminders {"limit": number} - показать активные напоминания.\n'
-        '- cancel_reminder {"id": number} - отменить напоминание.\n'
-        '- create_status {"title": string, "status": string} - начать отслеживать статус.\n'
-        '- list_statuses {"limit": number} - показать отслеживаемые статусы.\n'
-        '- update_status {"id": number, "status": string} - обновить статус.\n'
-        '- delete_status {"id": number} - удалить отслеживаемый объект.\n\n'
-        '- search_conversation {"query": string, "limit": number} - найти старое обсуждение '
-        "во всей сохраненной переписке по содержательным ключевым словам.\n\n"
+        f"{render_agent_tool_catalog()}\n\n"
         "Правила:\n"
         "- Для просьб 'запомни', 'сохрани как факт', 'учти на будущее' используй remember.\n"
         "- Для заметок используй create_note, для напоминаний create_reminder, "
@@ -205,185 +186,6 @@ def save_conversation_exchange(
     storage.add_conversation_exchange(user_id, chat_id, prompt, answer)
 
 
-def coerce_positive_int(value: Any, default: int, maximum: int = 50) -> int:
-    try:
-        parsed = int(value)
-    except (TypeError, ValueError):
-        return default
-    if parsed <= 0:
-        return default
-    return min(parsed, maximum)
-
-
-def coerce_required_text(arguments: dict[str, Any], key: str) -> str:
-    value = arguments.get(key, "")
-    return str(value).strip()
-
-
-def parse_agent_reminder(
-    when: str, text: str, tz: ZoneInfo
-) -> ReminderParseResult | None:
-    parsed = parse_reminder(f"{when} {text}".strip(), tz)
-    if parsed:
-        return parsed
-
-    normalized_when = when.strip().replace("T", " ")
-    try:
-        parsed_dt = datetime.fromisoformat(normalized_when)
-    except ValueError:
-        return None
-
-    if parsed_dt.tzinfo is None:
-        parsed_dt = parsed_dt.replace(tzinfo=tz)
-    return ReminderParseResult(parsed_dt.astimezone(timezone.utc), text)
-
-
-def execute_agent_tool(
-    name: str,
-    arguments: dict[str, Any],
-    storage: AssistantStorage,
-    user_id: int,
-    chat_id: int,
-    tz: ZoneInfo,
-) -> dict[str, Any]:
-    tool_name = name.strip().lower()
-
-    if tool_name == "get_current_datetime":
-        now = utc_now()
-        return {
-            "ok": True,
-            "local": now.astimezone(tz).strftime("%Y-%m-%d %H:%M:%S"),
-            "utc": to_utc_iso(now),
-            "timezone": tz.key,
-        }
-
-    if tool_name == "remember":
-        text = coerce_required_text(arguments, "text")
-        if not text:
-            return {"ok": False, "error": "text is required"}
-        memory_id = storage.add_memory(user_id, text)
-        return {"ok": True, "id": memory_id, "text": text}
-
-    if tool_name == "list_memory":
-        rows = storage.list_memories(
-            user_id, coerce_positive_int(arguments.get("limit"), 20)
-        )
-        return {"ok": True, "items": rows}
-
-    if tool_name == "delete_memory":
-        memory_id = parse_positive_int(str(arguments.get("id", "")))
-        if memory_id is None:
-            return {"ok": False, "error": "valid id is required"}
-        return {"ok": storage.delete_memory(user_id, memory_id), "id": memory_id}
-
-    if tool_name == "create_note":
-        text = coerce_required_text(arguments, "text")
-        if not text:
-            return {"ok": False, "error": "text is required"}
-        note_id = storage.add_note(user_id, text)
-        return {"ok": True, "id": note_id, "text": text}
-
-    if tool_name == "list_notes":
-        rows = storage.list_notes(
-            user_id, coerce_positive_int(arguments.get("limit"), 20)
-        )
-        return {"ok": True, "items": rows}
-
-    if tool_name == "delete_note":
-        note_id = parse_positive_int(str(arguments.get("id", "")))
-        if note_id is None:
-            return {"ok": False, "error": "valid id is required"}
-        return {"ok": storage.delete_note(user_id, note_id), "id": note_id}
-
-    if tool_name == "create_reminder":
-        when = coerce_required_text(arguments, "when")
-        text = coerce_required_text(arguments, "text")
-        if not when or not text:
-            return {"ok": False, "error": "when and text are required"}
-        parsed = parse_agent_reminder(when, text, tz)
-        if not parsed:
-            return {"ok": False, "error": "could not parse reminder time"}
-        if parsed.remind_at_utc <= utc_now():
-            return {"ok": False, "error": "reminder time must be in the future"}
-
-        reminder_id = storage.add_reminder(
-            user_id, chat_id, parsed.text, parsed.remind_at_utc
-        )
-        return {
-            "ok": True,
-            "id": reminder_id,
-            "text": parsed.text,
-            "remind_at": format_local_dt(parsed.remind_at_utc, tz),
-        }
-
-    if tool_name == "list_reminders":
-        rows = storage.list_reminders(
-            user_id, coerce_positive_int(arguments.get("limit"), 20)
-        )
-        for row in rows:
-            row["remind_at_local"] = format_local_dt(row["remind_at"], tz)
-        return {"ok": True, "items": rows}
-
-    if tool_name == "cancel_reminder":
-        reminder_id = parse_positive_int(str(arguments.get("id", "")))
-        if reminder_id is None:
-            return {"ok": False, "error": "valid id is required"}
-        return {"ok": storage.cancel_reminder(user_id, reminder_id), "id": reminder_id}
-
-    if tool_name == "create_status":
-        title = coerce_required_text(arguments, "title")
-        status = coerce_required_text(arguments, "status") or "open"
-        if not title:
-            return {"ok": False, "error": "title is required"}
-        item_id = storage.add_tracked_item(user_id, title, status)
-        return {"ok": True, "id": item_id, "title": title, "status": status}
-
-    if tool_name == "list_statuses":
-        rows = storage.list_tracked_items(
-            user_id, coerce_positive_int(arguments.get("limit"), 30)
-        )
-        return {"ok": True, "items": rows}
-
-    if tool_name == "update_status":
-        item_id = parse_positive_int(str(arguments.get("id", "")))
-        status = coerce_required_text(arguments, "status")
-        if item_id is None or not status:
-            return {"ok": False, "error": "valid id and status are required"}
-        return {
-            "ok": storage.set_tracked_status(user_id, item_id, status),
-            "id": item_id,
-            "status": status,
-        }
-
-    if tool_name == "delete_status":
-        item_id = parse_positive_int(str(arguments.get("id", "")))
-        if item_id is None:
-            return {"ok": False, "error": "valid id is required"}
-        return {"ok": storage.delete_tracked_item(user_id, item_id), "id": item_id}
-
-    if tool_name == "search_conversation":
-        query = coerce_required_text(arguments, "query")
-        if not query:
-            return {"ok": False, "error": "query is required"}
-        limit = coerce_positive_int(arguments.get("limit"), 5, maximum=10)
-        hits = storage.search_conversation_messages(user_id, chat_id, query, limit)
-        discussions = [
-            {
-                "matched_message_id": hit["id"],
-                "score": hit["score"],
-                "messages": storage.conversation_message_window(
-                    user_id,
-                    chat_id,
-                    int(hit["id"]),
-                ),
-            }
-            for hit in hits
-        ]
-        return {"ok": True, "query": query, "discussions": discussions}
-
-    return {"ok": False, "error": f"unknown tool: {name}"}
-
-
 async def run_agent_prompt(
     update: Update,
     context: ContextTypes.DEFAULT_TYPE,
diff --git a/assistant_bot/agent_tools.py b/assistant_bot/agent_tools.py
new file mode 100644
index 0000000..49370c6
--- /dev/null
+++ b/assistant_bot/agent_tools.py
@@ -0,0 +1,417 @@
+from dataclasses import dataclass
+from datetime import datetime, timezone
+from typing import Any, Callable
+from zoneinfo import ZoneInfo
+
+from .models import ReminderParseResult
+from .reminders import parse_reminder
+from .storage import AssistantStorage
+from .telegram_utils import parse_positive_int
+from .time_utils import format_local_dt, to_utc_iso, utc_now
+
+
+ToolResult = dict[str, Any]
+ToolExecutor = Callable[[dict[str, Any], "ToolContext"], ToolResult]
+
+
+@dataclass(frozen=True)
+class ToolContext:
+    storage: AssistantStorage
+    user_id: int
+    chat_id: int
+    tz: ZoneInfo
+
+
+@dataclass(frozen=True)
+class AgentTool:
+    name: str
+    usage: str
+    description: str
+    execute: ToolExecutor
+    paragraph_before: bool = False
+
+    def prompt_line(self) -> str:
+        suffix = f" {self.usage}" if self.usage else " {}"
+        prefix = "\n" if self.paragraph_before else ""
+        return f"{prefix}- {self.name}{suffix} - {self.description}"
+
+
+def coerce_positive_int(value: Any, default: int, maximum: int = 50) -> int:
+    try:
+        parsed = int(value)
+    except (TypeError, ValueError):
+        return default
+    if parsed <= 0:
+        return default
+    return min(parsed, maximum)
+
+
+def coerce_required_text(arguments: dict[str, Any], key: str) -> str:
+    value = arguments.get(key, "")
+    return str(value).strip()
+
+
+def parse_agent_reminder(
+    when: str,
+    text: str,
+    tz: ZoneInfo,
+) -> ReminderParseResult | None:
+    parsed = parse_reminder(f"{when} {text}".strip(), tz)
+    if parsed:
+        return parsed
+
+    normalized_when = when.strip().replace("T", " ")
+    try:
+        parsed_dt = datetime.fromisoformat(normalized_when)
+    except ValueError:
+        return None
+
+    if parsed_dt.tzinfo is None:
+        parsed_dt = parsed_dt.replace(tzinfo=tz)
+    return ReminderParseResult(parsed_dt.astimezone(timezone.utc), text)
+
+
+def get_current_datetime(
+    _arguments: dict[str, Any],
+    context: ToolContext,
+) -> ToolResult:
+    now = utc_now()
+    return {
+        "ok": True,
+        "local": now.astimezone(context.tz).strftime("%Y-%m-%d %H:%M:%S"),
+        "utc": to_utc_iso(now),
+        "timezone": context.tz.key,
+    }
+
+
+def remember(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    text = coerce_required_text(arguments, "text")
+    if not text:
+        return {"ok": False, "error": "text is required"}
+    memory_id = context.storage.add_memory(context.user_id, text)
+    return {"ok": True, "id": memory_id, "text": text}
+
+
+def list_memory(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    rows = context.storage.list_memories(
+        context.user_id,
+        coerce_positive_int(arguments.get("limit"), 20),
+    )
+    return {"ok": True, "items": rows}
+
+
+def delete_memory(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    memory_id = parse_positive_int(str(arguments.get("id", "")))
+    if memory_id is None:
+        return {"ok": False, "error": "valid id is required"}
+    return {
+        "ok": context.storage.delete_memory(context.user_id, memory_id),
+        "id": memory_id,
+    }
+
+
+def create_note(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    text = coerce_required_text(arguments, "text")
+    if not text:
+        return {"ok": False, "error": "text is required"}
+    note_id = context.storage.add_note(context.user_id, text)
+    return {"ok": True, "id": note_id, "text": text}
+
+
+def list_notes(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    rows = context.storage.list_notes(
+        context.user_id,
+        coerce_positive_int(arguments.get("limit"), 20),
+    )
+    return {"ok": True, "items": rows}
+
+
+def delete_note(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    note_id = parse_positive_int(str(arguments.get("id", "")))
+    if note_id is None:
+        return {"ok": False, "error": "valid id is required"}
+    return {
+        "ok": context.storage.delete_note(context.user_id, note_id),
+        "id": note_id,
+    }
+
+
+def create_reminder(
+    arguments: dict[str, Any],
+    context: ToolContext,
+) -> ToolResult:
+    when = coerce_required_text(arguments, "when")
+    text = coerce_required_text(arguments, "text")
+    if not when or not text:
+        return {"ok": False, "error": "when and text are required"}
+    parsed = parse_agent_reminder(when, text, context.tz)
+    if not parsed:
+        return {"ok": False, "error": "could not parse reminder time"}
+    if parsed.remind_at_utc <= utc_now():
+        return {"ok": False, "error": "reminder time must be in the future"}
+
+    reminder_id = context.storage.add_reminder(
+        context.user_id,
+        context.chat_id,
+        parsed.text,
+        parsed.remind_at_utc,
+    )
+    return {
+        "ok": True,
+        "id": reminder_id,
+        "text": parsed.text,
+        "remind_at": format_local_dt(parsed.remind_at_utc, context.tz),
+    }
+
+
+def list_reminders(
+    arguments: dict[str, Any],
+    context: ToolContext,
+) -> ToolResult:
+    rows = context.storage.list_reminders(
+        context.user_id,
+        coerce_positive_int(arguments.get("limit"), 20),
+    )
+    for row in rows:
+        row["remind_at_local"] = format_local_dt(
+            row["remind_at"],
+            context.tz,
+        )
+    return {"ok": True, "items": rows}
+
+
+def cancel_reminder(
+    arguments: dict[str, Any],
+    context: ToolContext,
+) -> ToolResult:
+    reminder_id = parse_positive_int(str(arguments.get("id", "")))
+    if reminder_id is None:
+        return {"ok": False, "error": "valid id is required"}
+    return {
+        "ok": context.storage.cancel_reminder(
+            context.user_id,
+            reminder_id,
+        ),
+        "id": reminder_id,
+    }
+
+
+def create_status(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    title = coerce_required_text(arguments, "title")
+    status = coerce_required_text(arguments, "status") or "open"
+    if not title:
+        return {"ok": False, "error": "title is required"}
+    item_id = context.storage.add_tracked_item(
+        context.user_id,
+        title,
+        status,
+    )
+    return {
+        "ok": True,
+        "id": item_id,
+        "title": title,
+        "status": status,
+    }
+
+
+def list_statuses(
+    arguments: dict[str, Any],
+    context: ToolContext,
+) -> ToolResult:
+    rows = context.storage.list_tracked_items(
+        context.user_id,
+        coerce_positive_int(arguments.get("limit"), 30),
+    )
+    return {"ok": True, "items": rows}
+
+
+def update_status(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    item_id = parse_positive_int(str(arguments.get("id", "")))
+    status = coerce_required_text(arguments, "status")
+    if item_id is None or not status:
+        return {"ok": False, "error": "valid id and status are required"}
+    return {
+        "ok": context.storage.set_tracked_status(
+            context.user_id,
+            item_id,
+            status,
+        ),
+        "id": item_id,
+        "status": status,
+    }
+
+
+def delete_status(arguments: dict[str, Any], context: ToolContext) -> ToolResult:
+    item_id = parse_positive_int(str(arguments.get("id", "")))
+    if item_id is None:
+        return {"ok": False, "error": "valid id is required"}
+    return {
+        "ok": context.storage.delete_tracked_item(
+            context.user_id,
+            item_id,
+        ),
+        "id": item_id,
+    }
+
+
+def search_conversation(
+    arguments: dict[str, Any],
+    context: ToolContext,
+) -> ToolResult:
+    query = coerce_required_text(arguments, "query")
+    if not query:
+        return {"ok": False, "error": "query is required"}
+    limit = coerce_positive_int(arguments.get("limit"), 5, maximum=10)
+    hits = context.storage.search_conversation_messages(
+        context.user_id,
+        context.chat_id,
+        query,
+        limit,
+    )
+    discussions = [
+        {
+            "matched_message_id": hit["id"],
+            "score": hit["score"],
+            "messages": context.storage.conversation_message_window(
+                context.user_id,
+                context.chat_id,
+                int(hit["id"]),
+            ),
+        }
+        for hit in hits
+    ]
+    return {
+        "ok": True,
+        "query": query,
+        "discussions": discussions,
+    }
+
+
+AGENT_TOOLS = (
+    AgentTool(
+        "get_current_datetime",
+        "",
+        "узнать текущее локальное и UTC-время.",
+        get_current_datetime,
+    ),
+    AgentTool(
+        "remember",
+        '{"text": string}',
+        "сохранить важный долгосрочный факт о пользователе.",
+        remember,
+    ),
+    AgentTool(
+        "list_memory",
+        '{"limit": number}',
+        "показать сохраненную память.",
+        list_memory,
+    ),
+    AgentTool(
+        "delete_memory",
+        '{"id": number}',
+        "удалить запись памяти.",
+        delete_memory,
+    ),
+    AgentTool(
+        "create_note",
+        '{"text": string}',
+        "сохранить заметку.",
+        create_note,
+    ),
+    AgentTool(
+        "list_notes",
+        '{"limit": number}',
+        "показать заметки.",
+        list_notes,
+    ),
+    AgentTool(
+        "delete_note",
+        '{"id": number}',
+        "удалить заметку.",
+        delete_note,
+    ),
+    AgentTool(
+        "create_reminder",
+        '{"when": string, "text": string}',
+        (
+            "поставить напоминание. when можно указывать как '30m', "
+            "'через 2 часа', '18:30', '2026-07-16 18:30'. Если пользователь "
+            "говорит 'завтра/послезавтра/через неделю', сам рассчитай дату от "
+            "текущего локального времени и передай 'YYYY-MM-DD HH:MM'."
+        ),
+        create_reminder,
+    ),
+    AgentTool(
+        "list_reminders",
+        '{"limit": number}',
+        "показать активные напоминания.",
+        list_reminders,
+    ),
+    AgentTool(
+        "cancel_reminder",
+        '{"id": number}',
+        "отменить напоминание.",
+        cancel_reminder,
+    ),
+    AgentTool(
+        "create_status",
+        '{"title": string, "status": string}',
+        "начать отслеживать статус.",
+        create_status,
+    ),
+    AgentTool(
+        "list_statuses",
+        '{"limit": number}',
+        "показать отслеживаемые статусы.",
+        list_statuses,
+    ),
+    AgentTool(
+        "update_status",
+        '{"id": number, "status": string}',
+        "обновить статус.",
+        update_status,
+    ),
+    AgentTool(
+        "delete_status",
+        '{"id": number}',
+        "удалить отслеживаемый объект.",
+        delete_status,
+    ),
+    AgentTool(
+        "search_conversation",
+        '{"query": string, "limit": number}',
+        (
+            "найти старое обсуждение во всей сохраненной переписке по "
+            "содержательным ключевым словам."
+        ),
+        search_conversation,
+        paragraph_before=True,
+    ),
+)
+AGENT_TOOL_BY_NAME = {tool.name: tool for tool in AGENT_TOOLS}
+
+
+def render_agent_tool_catalog() -> str:
+    return "\n".join(tool.prompt_line() for tool in AGENT_TOOLS)
+
+
+def execute_agent_tool(
+    name: str,
+    arguments: dict[str, Any],
+    storage: AssistantStorage,
+    user_id: int,
+    chat_id: int,
+    tz: ZoneInfo,
+) -> ToolResult:
+    tool = AGENT_TOOL_BY_NAME.get(name.strip().lower())
+    if tool is None:
+        return {"ok": False, "error": f"unknown tool: {name}"}
+    return tool.execute(
+        arguments,
+        ToolContext(
+            storage=storage,
+            user_id=user_id,
+            chat_id=chat_id,
+            tz=tz,
+        ),
+    )
diff --git a/tests/test_core.py b/tests/test_core.py
index 87dd823..4740726 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -11,6 +11,7 @@ from assistant_bot.agent import (
     execute_agent_tool,
     parse_agent_decision,
 )
+from assistant_bot.agent_tools import AGENT_TOOLS
 from assistant_bot.reminders import parse_reminder, unit_to_timedelta
 from assistant_bot.storage import AssistantStorage
 
@@ -78,6 +79,10 @@ class AgentToolContractTests(unittest.TestCase):
     def test_prompt_exposes_all_supported_tool_names(self) -> None:
         prompt = build_agent_tool_prompt(ZoneInfo("UTC"))
 
+        self.assertEqual(
+            tuple(tool.name for tool in AGENT_TOOLS),
+            self.TOOL_NAMES,
+        )
         for tool_name in self.TOOL_NAMES:
             with self.subTest(tool_name=tool_name):
                 self.assertIn(tool_name, prompt)