PageWatch - page-to-data extraction and change monitoring
Extract prices, lists, tables, events from static pages and watch them for changes.
使うべきか
品質と安全性
A
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
~732トークン数（ツール定義）
~2.2 KB一般的なレスポンスサイズ
注意への影響は中程度（128k コンテキストの 0.57%）
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"pagewatch": {
"url": "https://pagewatch.zenith-ops.workers.dev/mcp"
}
}
}リモートエンドポイント
https://pagewatch.zenith-ops.workers.dev/mcpstreamable-httpできること
ツール一覧
ツール（3）
🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢extract_page(url, mode, selector, attr, fields, ...)
Fetch one public static web page and extract structured data from it (text, attr, list, table, price, events, page, links, json). Free tier: 30 calls per day per client. No JavaScript rendering.
入力スキーマ
{
"type": "object",
"properties": {
"url": {
"type": "string"
},
"mode": {
"type": "string",
"enum": [
"text",
"attr",
"list",
"table",
"price",
"events",
"page",
"links",
"json"
],
"description": "What to extract. Default text for extract_page, page for watch_page."
},
"selector": {
"type": "string",
"description": "CSS selector (required for text, attr, list)."
},
"attr": {
"type": "string",
"description": "Attribute name for mode=attr."
},
"fields": {
"type": "object",
"additionalProperties": {
"type": "string"
},
"description": "mode=list: {\"name\": \"css\" or \"css@attr\"}."
},
"match": {
"type": "string",
"description": "mode=links: regular expression filter."
},
"jsonpath": {
"type": "string",
"description": "mode=json: JSONPath-lite such as $.a.b[0]."
},
"sameHost": {
"type": "boolean"
},
"all": {
"type": "boolean"
},
"tableIndex": {
"type": "integer",
"minimum": 0
},
"paid": {
"type": "boolean",
"description": "true: use the paid endpoint (x402). The result is the payment requirements unless a payment header is sent."
}
},
"required": [
"url"
],
"additionalProperties": false
}🟡watch_page(url, mode, selector, attr, fields, ...)
Create a monitor that checks a public page on a schedule and records changes. Returns monitor id, manage token (shown once), feed and events URLs. Free plan: checks every 60 minutes or slower, 3 active monitors per client, 30 days.
入力スキーマ
{
"type": "object",
"properties": {
"url": {
"type": "string"
},
"mode": {
"type": "string",
"enum": [
"text",
"attr",
"list",
"table",
"price",
"events",
"page",
"links",
"json"
],
"description": "What to extract. Default text for extract_page, page for watch_page."
},
"selector": {
"type": "string",
"description": "CSS selector (required for text, attr, list)."
},
"attr": {
"type": "string",
"description": "Attribute name for mode=attr."
},
"fields": {
"type": "object",
"additionalProperties": {
"type": "string"
},
"description": "mode=list: {\"name\": \"css\" or \"css@attr\"}."
},
"match": {
"type": "string",
"description": "mode=links: regular expression filter."
},
"jsonpath": {
"type": "string",
"description": "mode=json: JSONPath-lite such as $.a.b[0]."
},
"sameHost": {
"type": "boolean"
},
"all": {
"type": "boolean"
},
"tableIndex": {
"type": "integer",
"minimum": 0
},
"interval_minutes": {
"type": "integer",
"minimum": 15
},
"webhook_url": {
"type": "string",
"description": "https URL for signed change notifications."
},
"paid": {
"type": "boolean",
"description": "true: use the paid endpoint (x402). The result is the payment requirements unless a payment header is sent."
}
},
"required": [
"url"
],
"additionalProperties": false
}🟢get_changes(id, limit)
Read the latest state and the change log of a monitor by id.
入力スキーマ
{
"type": "object",
"properties": {
"id": {
"type": "string"
},
"limit": {
"type": "integer",
"minimum": 1,
"maximum": 50
}
},
"required": [
"id"
],
"additionalProperties": false
}コミュニティ
エビデンス
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検証済みバージョンは記録されていませんツール 3 件