kestrel
Watch any URL for changes: baseline, then check for a diff. Free, no signup/key.
我该使用它吗
质量与安全性
基于对工具定义和协议合规性的自动分析。
上下文开销
这是每次将服务器的工具加载到模型上下文窗口时所消耗的大致 token 数。数值越高，可用于其他任务的注意力就越少。
安装
一键安装
将以下内容添加到你的 `claude_desktop_config.json` 文件中：
{
"mcpServers": {
"kestrel": {
"url": "https://kestrel.perch-app.workers.dev/mcp"
}
}
}远程端点
https://kestrel.perch-app.workers.dev/mcpstreamable-http它能做什么
工具清单
工具（4）
🟡create_watch(url, label, token)
Start monitoring a web page (or JSON/text URL) for changes. Captures a baseline snapshot now. Returns a watch_id and a token — save the token; it's how you check and manage your watches later. Pass an existing token to add more watches under the same account.
输入模式
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "Absolute http(s) URL to monitor, e.g. https://example.com/pricing"
},
"label": {
"type": "string",
"description": "Optional human label for this watch."
},
"token": {
"type": "string",
"description": "Optional. Your existing Kestrel token to group this watch with others. Omit to get a new token."
}
},
"required": [
"url"
]
}🟢check_watch(watch_id, token)
Re-fetch a watched page and report whether it changed since the last check, with a short list of added/removed content lines. Updates the baseline to the new content. Call this every time you want the latest status (e.g. each run/heartbeat).
输入模式
{
"type": "object",
"properties": {
"watch_id": {
"type": "string"
},
"token": {
"type": "string",
"description": "The token returned by create_watch."
}
},
"required": [
"watch_id",
"token"
]
}🟢list_watches(token)
List all watches under your token, with per-watch check/change counts.
输入模式
{
"type": "object",
"properties": {
"token": {
"type": "string"
}
},
"required": [
"token"
]
}🔴delete_watch(watch_id, token)
Stop monitoring a page and delete the watch.
输入模式
{
"type": "object",
"properties": {
"watch_id": {
"type": "string"
},
"token": {
"type": "string"
}
},
"required": [
"watch_id",
"token"
]
}社区
证据