Upsonic と ClickHouse MCPサーバーを使って AIエージェントを構築する方法

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2025-10-10 11:26:12,758 - mcp.server.lowlevel.server - INFO - Processing request of type ListToolsRequest
Found 3 tools from DatabaseMCP
  - list_databases: List available ClickHouse databases
  - list_tables: List available ClickHouse tables in a database, including schema, comment,
row count, and column count.
  - run_select_query: Run a SELECT query in a ClickHouse database
✅ MCP tools discovered via thread

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[10/10/25 11:26:20] INFO     Starting MCP server 'mcp-clickhouse' with transport 'stdio'                                      server.py:1502
2025-10-10 11:26:20,183 - mcp.server.lowlevel.server - INFO - Processing request of type ListToolsRequest
2025-10-10 11:26:20,184 - mcp.server.lowlevel.server - INFO - Processing request of type ListPromptsRequest
2025-10-10 11:26:20,185 - mcp.server.lowlevel.server - INFO - Processing request of type ListResourcesRequest
[INFO] 2025-10-10T11:26:20 mcp_agent.workflows.llm.augmented_llm_openai.database-anayst - Using reasoning model 'gpt-5-mini-2025-08-07' with
'medium' reasoning effort
[INFO] 2025-10-10T11:26:23 mcp_agent.mcp.mcp_aggregator.database-anayst - Requesting tool call
{
  "data": {
    "progress_action": "Calling Tool",
    "tool_name": "list_databases",
    "server_name": "clickhouse",
    "agent_name": "database-anayst"
  }
}
2025-10-10 11:26:23,477 - mcp.server.lowlevel.server - INFO - Processing request of type CallToolRequest
2025-10-10 11:26:23,479 - mcp-clickhouse - INFO - Listing all databases
2025-10-10 11:26:23,479 - mcp-clickhouse - INFO - Creating ClickHouse client connection to sql-clickhouse.clickhouse.com:8443 as demo (secure=True, verify=True, connect_timeout=30s, send_receive_timeout=30s)
2025-10-10 11:26:24,375 - mcp-clickhouse - INFO - Successfully connected to ClickHouse server version 25.8.1.8344
2025-10-10 11:26:24,551 - mcp-clickhouse - INFO - Found 38 databases
[INFO] 2025-10-10T11:26:26 mcp_agent.mcp.mcp_aggregator.database-anayst - Requesting tool call
{
  "data": {
    "progress_action": "Calling Tool",
    "tool_name": "list_tables",
    "server_name": "clickhouse",
    "agent_name": "database-anayst"
  }
}
2025-10-10 11:26:26,825 - mcp.server.lowlevel.server - INFO - Processing request of type CallToolRequest
2025-10-10 11:26:26,832 - mcp-clickhouse - INFO - Listing tables in database 'uk'
2025-10-10 11:26:26,832 - mcp-clickhouse - INFO - Creating ClickHouse client connection to sql-clickhouse.clickhouse.com:8443 as demo (secure=True, verify=True, connect_timeout=30s, send_receive_timeout=30s)
2025-10-10 11:26:27,311 - mcp-clickhouse - INFO - Successfully connected to ClickHouse server version 25.8.1.8344
2025-10-10 11:26:28,738 - mcp-clickhouse - INFO - Found 9 tables
[INFO] 2025-10-10T11:26:48 mcp_agent.mcp.mcp_aggregator.database-anayst - Requesting tool call
{
  "data": {
    "progress_action": "Calling Tool",
    "tool_name": "run_select_query",
    "server_name": "clickhouse",
    "agent_name": "database-anayst"
  }
}
[INFO] 2025-10-10T11:26:48 mcp_agent.mcp.mcp_aggregator.database-anayst - Requesting tool call
{
  "data": {
    "progress_action": "Calling Tool",
    "tool_name": "run_select_query",
    "server_name": "clickhouse",
    "agent_name": "database-anayst"
  }
}
[INFO] 2025-10-10T11:26:48 mcp_agent.mcp.mcp_aggregator.database-anayst - Requesting tool call
{
  "data": {
    "progress_action": "Calling Tool",
    "tool_name": "run_select_query",
    "server_name": "clickhouse",
    "agent_name": "database-anayst"
  }
}
[INFO] 2025-10-10T11:26:48 mcp_agent.mcp.mcp_aggregator.database-anayst - Requesting tool call
{
  "data": {
    "progress_action": "Calling Tool",
    "tool_name": "run_select_query",
    "server_name": "clickhouse",
    "agent_name": "database-anayst"
  }
}
[INFO] 2025-10-10T11:26:48 mcp_agent.mcp.mcp_aggregator.database-anayst - Requesting tool call
{
  "data": {
    "progress_action": "Calling Tool",
    "tool_name": "run_select_query",
    "server_name": "clickhouse",
    "agent_name": "database-anayst"
  }
}
2025-10-10 11:26:48,366 - mcp.server.lowlevel.server - INFO - Processing request of type CallToolRequest
2025-10-10 11:26:48,367 - mcp-clickhouse - INFO - Executing SELECT query: SELECT
count(*) AS transactions,
avg(price) AS avg_price,
quantileExact(0.5)(price) AS median_price,
min(price) AS min_price,
max(price) AS max_price
FROM uk.uk_price_paid_simple_partitioned
WHERE toYear(date)=2025
2025-10-10 11:26:48,367 - mcp-clickhouse - INFO - Creating ClickHouse client connection to sql-clickhouse.clickhouse.com:8443 as demo (secure=True, verify=True, connect_timeout=30s, send_receive_timeout=30s)
2025-10-10 11:26:49,262 - mcp-clickhouse - INFO - Successfully connected to ClickHouse server version 25.8.1.8344
2025-10-10 11:26:49,407 - mcp-clickhouse - INFO - Query returned 1 rows
2025-10-10 11:26:49,408 - mcp.server.lowlevel.server - INFO - Processing request of type CallToolRequest
2025-10-10 11:26:49,408 - mcp-clickhouse - INFO - Executing SELECT query: SELECT toMonth(date) AS month, count(*) AS transactions, avg(price) AS avg_price, quantileExact(0.5)(price) AS median_price
FROM uk.uk_price_paid_simple_partitioned
WHERE toYear(date)=2025
GROUP BY month
ORDER BY month
2025-10-10 11:26:49,408 - mcp-clickhouse - INFO - Creating ClickHouse client connection to sql-clickhouse.clickhouse.com:8443 as demo (secure=True, verify=True, connect_timeout=30s, send_receive_timeout=30s)
2025-10-10 11:26:49,857 - mcp-clickhouse - INFO - Successfully connected to ClickHouse server version 25.8.1.8344
2025-10-10 11:26:50,067 - mcp-clickhouse - INFO - Query returned 8 rows
2025-10-10 11:26:50,068 - mcp.server.lowlevel.server - INFO - Processing request of type CallToolRequest
2025-10-10 11:26:50,069 - mcp-clickhouse - INFO - Executing SELECT query: SELECT town, count(*) AS transactions, avg(price) AS avg_price
FROM uk.uk_price_paid_simple_partitioned
WHERE toYear(date)=2025
GROUP BY town
HAVING transactions >= 50
ORDER BY avg_price DESC
LIMIT 10
2025-10-10 11:26:50,069 - mcp-clickhouse - INFO - Creating ClickHouse client connection to sql-clickhouse.clickhouse.com:8443 as demo (secure=True, verify=True, connect_timeout=30s, send_receive_timeout=30s)
2025-10-10 11:26:50,594 - mcp-clickhouse - INFO - Successfully connected to ClickHouse server version 25.8.1.8344
2025-10-10 11:26:50,741 - mcp-clickhouse - INFO - Query returned 10 rows
2025-10-10 11:26:50,744 - mcp.server.lowlevel.server - INFO - Processing request of type CallToolRequest
2025-10-10 11:26:50,746 - mcp-clickhouse - INFO - Executing SELECT query: SELECT toYear(date) AS year, count(*) AS transactions, avg(price) AS avg_price, quantileExact(0.5)(price) AS median_price
FROM uk.uk_price_paid_simple_partitioned
WHERE toYear(date) IN (2024,2025)
GROUP BY year
ORDER BY year
2025-10-10 11:26:50,747 - mcp-clickhouse - INFO - Creating ClickHouse client connection to sql-clickhouse.clickhouse.com:8443 as demo (secure=True, verify=True, connect_timeout=30s, send_receive_timeout=30s)
2025-10-10 11:26:51,256 - mcp-clickhouse - INFO - Successfully connected to ClickHouse server version 25.8.1.8344
2025-10-10 11:26:51,447 - mcp-clickhouse - INFO - Query returned 2 rows
2025-10-10 11:26:51,449 - mcp.server.lowlevel.server - INFO - Processing request of type CallToolRequest
2025-10-10 11:26:51,452 - mcp-clickhouse - INFO - Executing SELECT query: SELECT type, count(*) AS transactions, avg(price) AS avg_price, quantileExact(0.5)(price) AS median_price
FROM uk.uk_price_paid
WHERE toYear(date)=2025
GROUP BY type
ORDER BY avg_price DESC
2025-10-10 11:26:51,452 - mcp-clickhouse - INFO - Creating ClickHouse client connection to sql-clickhouse.clickhouse.com:8443 as demo (secure=True, verify=True, connect_timeout=30s, send_receive_timeout=30s)
2025-10-10 11:26:51,952 - mcp-clickhouse - INFO - Successfully connected to ClickHouse server version 25.8.1.8344
2025-10-10 11:26:52,166 - mcp-clickhouse - INFO - Query returned 5 rows
[INFO] 2025-10-10T11:27:51 mcp_agent.mcp_basic_agent - Summary (TL;DR)
- Based on the UK Price Paid tables in ClickHouse, for transactions recorded in 2025 so far there are 376,633 sales with an average price of
£362,283 and a median price of £281,000. The data appears to include only months Jan–Aug 2025 (so 2025 is incomplete). There are extreme
outliers (min £100, max £127,700,000) that skew the mean.

計算内容（方法）
ClickHouse の uk.price-paid テーブルに対して集計を実行しました：
- 2025年全体のサマリー（件数、平均、中央値、最小、最大）— uk.uk_price_paid_simple_partitioned を使用
- 2025年の月別内訳（取引件数、平均、中央値）
- 2025年の平均価格上位の町（取引件数 >= 50 の町）
- 年度比較：2024年 vs 2025年（件数、平均、中央値）
- 2025年の物件タイプ別内訳（件数、平均、中央値）— uk.uk_price_paid を使用

主要な数値（データセットより）
- 2025年全体（記録済み取引）：取引件数 = 376,633件；平均価格 = £362,282.66；中央値 = £281,000；最小 = £100；最大 =
£127,700,000。
- 月別（2025年）：（月、取引件数、平均価格、中央値）
  - 1月：53,927件、平均 £386,053、中央値 £285,000
  - 2月：58,740件、平均 £371,803、中央値 £285,000
  - 3月：95,274件、平均 £377,200、中央値 £315,000
  - 4月：24,987件、平均 £331,692、中央値 £235,000
  - 5月：39,013件、平均 £342,380、中央値 £255,000
  - 6月：41,446件、平均 £334,667、中央値 £268,500
  - 7月：44,431件、平均 £348,293、中央値 £277,500
  - 8月：18,815件、平均 £364,653、中央値 £292,999
  （データセットには1〜8月分のみ含まれています。）
- 平均価格上位の町（2025年、取引件数 ≥50 の町）
  - TRING：126件、平均 £1,973,274
  - BUCKHURST HILL：98件、平均 £1,441,331
  - ASCOT：175件、平均 £1,300,748
  - RADLETT：69件、平均 £1,160,217
  - COBHAM：115件、平均 £1,035,192
  - EAST MOLESEY、BEACONSFIELD、ESHER、CHALFONT ST GILES、THAMES DITTON もトップ10に入っています（いずれも平均価格の高い通勤圏・富裕層向けの町）。
- 年度比較（記録ベース：2024年 vs 2025年）
  - 2024年：859,960件、平均 £390,879、中央値 £280,000
  - 2025年：376,633件、平均 £362,283、中央値 £281,000
  （2025年の件数が大幅に少ないのは、データセットが年の途中までしか含まれていないためです。）
- 物件タイプ別（2025年）
  - 一戸建て（detached）：85,362件、平均 £495,714、中央値 £415,000
  - 半戸建て（semi-detached）：107,580件、平均 £319,922、中央値 £270,000
  - フラット（flat）：62,975件、平均 £298,529、中央値 £227,000
  - テラスハウス（terraced）：112,832件、平均 £286,616、中央値 £227,000
  - その他（other）：7,884件、平均 £1,087,765（中央値 £315,000）— 少数グループおよび外れ値の影響に注意

重要な注意事項とデータ品質に関するメモ
- データセットは2025年分が不完全です（1〜8月分のみ）。「2025年」の合計値は通年の数値ではありません。
- 大きな外れ値が存在します（例：最大 £127.7M、最小 £100）。これらはデータ入力エラーや非標準的な記録を含む可能性があり、平均値を押し上げています。ここでは中央値がより堅牢な指標となります。
- 「その他」物件タイプの平均値は、件数が少なく異質なデータや外れ値の影響で不安定です。
- is_new、duration、その他のメタデータによるフィルタリングは行っていません。これらのフィルターを適用すると結果が変わる場合があります（例：新築物件やリースホールドを除外する場合）。
- テーブルは Price Paid 形式の取引記録（記録済み売買）であり、希望価格や査定額を直接表すものではありません。

次のステップの提案（実行可能）
- 明らかな外れ値（例：£10,000未満または £10M超の価格）を除外して平均・中央値を再計算する。
- 地域 / 郡 / 郵便番号エリア別のサマリーおよびマップを作成する。
- 前月比または3ヶ月移動中央値を計算して2025年のトレンドを示す。
- 月別の前年同月比（YoY）成長率を算出する（例：2025年3月 vs 2024年3月）。
- 単純な外挿または時系列モデリングを用いて2025年通年の予測を行う（ただし、欠損月や外れ値の扱いを決定してから実施する方が望ましい）。

ご希望があれば：
- 極端な外れ値を除外した上で同じ集計を再実行し、クリーニング後の結果をお示しします。
- YoY月次成長率とグラフを作成します（グラフ化できる CSV または JSON 形式の集計データを返すことも可能です）。
次に何をご希望ですか？
[INFO] 2025-10-10T11:27:51 mcp_agent.mcp.mcp_aggregator.database-anayst - Last aggregator closing, shutting down all persistent
connections...
[INFO] 2025-10-10T11:27:51 mcp_agent.mcp.mcp_connection_manager - Disconnecting all persistent server connections...
[INFO] 2025-10-10T11:27:51 mcp_agent.mcp.mcp_connection_manager - clickhouse: Requesting shutdown...
[INFO] 2025-10-10T11:27:51 mcp_agent.mcp.mcp_connection_manager - All persistent server connections signaled to disconnect.
[INFO] 2025-10-10T11:27:52 mcp_agent.mcp.mcp_aggregator.database-anayst - Connection manager successfully closed and removed from context
[INFO] 2025-10-10T11:27:52 mcp_agent.mcp_basic_agent - MCPApp cleanup
{
  "data": {
    "progress_action": "Finished",
    "target": "mcp_basic_agent",
    "agent_name": "mcp_application_loop"
  }
}