Is This Site Down?
Check if any website is down, from two continents, with uptime history and TLS expiry
我该使用它吗
质量与安全性
A
基于对工具定义和协议合规性的自动分析。
上下文开销
~2,284token 数（工具定义）
~4.5 KB典型响应大小
对注意力有中等影响（占 128k 上下文窗口的 1.78%）
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": {
"is-it-down": {
"url": "https://downforjustmeoreveryone.com/mcp"
}
}
}远程端点
https://downforjustmeoreveryone.com/mcpstreamable-http它能做什么
工具清单
工具（5）
🟢 只读🟡 写入🔴 删除⚪ 未知
🟢check_site(domain)
Live up/down check of any public website from an independent server (Singapore; Boston for sites that geo-block Singapore). Returns a one-sentence verdict plus status code, latency, resolved IP, redirect target, the view from the other region when available, and how many users reported problems in the last hour. Results are cached 30 s per domain.
输入模式
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"description": "Domain or URL to check, e.g. \"github.com\" or \"https://www.reddit.com/r/all\". Scheme, path, port and query are ignored; the host is checked as given."
}
},
"required": [
"domain"
],
"additionalProperties": false
}输出模式
{
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"up": {
"type": "boolean"
},
"state": {
"type": "string",
"enum": [
"up",
"slow",
"error",
"maintenance",
"down"
]
},
"status": {
"type": [
"integer",
"null"
]
},
"latencyMs": {
"type": [
"number",
"null"
]
},
"checkedAt": {
"type": "string",
"description": "ISO 8601"
},
"reason": {
"type": "string"
},
"ip": {
"type": [
"string",
"null"
]
},
"scheme": {
"type": [
"string",
"null"
],
"enum": [
"https",
"http",
null
]
},
"finalUrl": {
"type": [
"string",
"null"
]
},
"redirected": {
"type": "boolean"
},
"server": {
"type": [
"string",
"null"
]
},
"tls": {
"type": [
"object",
"null"
],
"properties": {
"daysRemaining": {
"type": "number"
},
"validTo": {
"type": "string"
},
"issuer": {
"type": [
"string",
"null"
]
}
}
},
"checkedFrom": {
"type": "string",
"enum": [
"sg",
"us"
],
"description": "sg = Singapore, us = Boston"
},
"regions": {
"type": "object",
"description": "Fresh result from each region that has one",
"properties": {
"sg": {
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"up": {
"type": "boolean"
},
"state": {
"type": "string",
"enum": [
"up",
"slow",
"error",
"maintenance",
"down"
]
},
"status": {
"type": [
"integer",
"null"
]
},
"latencyMs": {
"type": [
"number",
"null"
]
},
"checkedAt": {
"type": "string",
"description": "ISO 8601"
},
"reason": {
"type": "string"
},
"ip": {
"type": [
"string",
"null"
]
},
"scheme": {
"type": [
"string",
"null"
],
"enum": [
"https",
"http",
null
]
},
"finalUrl": {
"type": [
"string",
"null"
]
},
"redirected": {
"type": "boolean"
},
"server": {
"type": [
"string",
"null"
]
},
"tls": {
"type": [
"object",
"null"
],
"properties": {
"daysRemaining": {
"type": "number"
},
"validTo": {
"type": "string"
},
"issuer": {
"type": [
"string",
"null"
]
}
}
}
},
"required": [
"domain",
"up",
"state",
"status",
"latencyMs",
"checkedAt",
"reason"
]
},
"us": {
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"up": {
"type": "boolean"
},
"state": {
"type": "string",
"enum": [
"up",
"slow",
"error",
"maintenance",
"down"
]
},
"status": {
"type": [
"integer",
"null"
]
},
"latencyMs": {
"type": [
"number",
"null"
]
},
"checkedAt": {
"type": "string",
"description": "ISO 8601"
},
"reason": {
"type": "string"
},
"ip": {
"type": [
"string",
"null"
]
},
"scheme": {
"type": [
"string",
"null"
],
"enum": [
"https",
"http",
null
]
},
"finalUrl": {
"type": [
"string",
"null"
]
},
"redirected": {
"type": "boolean"
},
"server": {
"type": [
"string",
"null"
]
},
"tls": {
"type": [
"object",
"null"
],
"properties": {
"daysRemaining": {
"type": "number"
},
"validTo": {
"type": "string"
},
"issuer": {
"type": [
"string",
"null"
]
}
}
}
},
"required": [
"domain",
"up",
"state",
"status",
"latencyMs",
"checkedAt",
"reason"
]
}
}
},
"reportsLastHour": {
"type": "integer"
},
"curated": {
"type": "boolean",
"description": "true if the site is one of the monitored sites"
},
"statusUrl": {
"type": [
"string",
"null"
]
},
"url": {
"type": "string"
}
},
"required": [
"domain",
"up",
"state",
"status",
"latencyMs",
"checkedAt",
"reason",
"checkedFrom",
"regions",
"reportsLastHour",
"curated",
"statusUrl",
"url"
]
}🟢list_outages(category)
Lists the monitored sites (634 across 17 categories) that are confirmed down right now: two consecutive failed checks from their home region and no other region seeing them up in the last 15 minutes. Optional category filter.
输入模式
{
"type": "object",
"properties": {
"category": {
"type": "string",
"description": "Optional category slug or name: social, streaming, ai, work, developer, shopping, finance, banks, gaming, telecom, government, education, messaging, news, travel, health, dating."
}
},
"additionalProperties": false
}输出模式
{
"type": "object",
"properties": {
"asOf": {
"type": "string"
},
"monitored": {
"type": "integer"
},
"category": {
"type": [
"string",
"null"
]
},
"down": {
"type": "array",
"items": {
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"name": {
"type": "string"
},
"category": {
"type": "string"
},
"checkedFrom": {
"type": "string",
"enum": [
"sg",
"us"
],
"description": "sg = Singapore, us = Boston"
},
"statusUrl": {
"type": "string"
},
"url": {
"type": "string"
},
"since": {
"type": [
"string",
"null"
]
},
"downForMinutes": {
"type": [
"integer",
"null"
]
}
},
"required": [
"domain",
"name",
"category",
"url",
"since",
"downForMinutes"
]
}
}
},
"required": [
"asOf",
"monitored",
"category",
"down"
]
}🟢site_history(domain, days)
Uptime percentage over 24 h and over the requested window (up to 7 days), the list of outages in that window, when the site was last seen down, the current state and user-report counts. Only for monitored sites (see list_monitored_sites); use check_site for anything else.
输入模式
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"description": "A monitored domain, e.g. \"github.com\"."
},
"days": {
"type": "integer",
"minimum": 1,
"maximum": 7,
"description": "Window in days (1–7, default 7)."
}
},
"required": [
"domain"
],
"additionalProperties": false
}输出模式
{
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"name": {
"type": "string"
},
"category": {
"type": "string"
},
"checkedFrom": {
"type": "string",
"enum": [
"sg",
"us"
],
"description": "sg = Singapore, us = Boston"
},
"days": {
"type": "integer"
},
"uptime24h": {
"type": [
"number",
"null"
],
"description": "Percent, null if no data yet"
},
"uptimeWindow": {
"type": [
"number",
"null"
],
"description": "Percent over `days`, null if no data yet"
},
"current": {
"type": [
"object",
"null"
],
"properties": {
"domain": {
"type": "string"
},
"up": {
"type": "boolean"
},
"state": {
"type": "string",
"enum": [
"up",
"slow",
"error",
"maintenance",
"down"
]
},
"status": {
"type": [
"integer",
"null"
]
},
"latencyMs": {
"type": [
"number",
"null"
]
},
"checkedAt": {
"type": "string",
"description": "ISO 8601"
},
"reason": {
"type": "string"
},
"ip": {
"type": [
"string",
"null"
]
},
"scheme": {
"type": [
"string",
"null"
],
"enum": [
"https",
"http",
null
]
},
"finalUrl": {
"type": [
"string",
"null"
]
},
"redirected": {
"type": "boolean"
},
"server": {
"type": [
"string",
"null"
]
},
"tls": {
"type": [
"object",
"null"
],
"properties": {
"daysRemaining": {
"type": "number"
},
"validTo": {
"type": "string"
},
"issuer": {
"type": [
"string",
"null"
]
}
}
}
},
"required": [
"domain",
"up",
"state",
"status",
"latencyMs",
"checkedAt",
"reason"
]
},
"incidents": {
"type": "array",
"items": {
"type": "object",
"properties": {
"start": {
"type": "string"
},
"end": {
"type": [
"string",
"null"
]
},
"durationMinutes": {
"type": [
"integer",
"null"
]
},
"ongoing": {
"type": "boolean"
}
},
"required": [
"start",
"end",
"durationMinutes",
"ongoing"
]
}
},
"lastDown": {
"type": [
"string",
"null"
]
},
"reportsLastHour": {
"type": "integer"
},
"reports24h": {
"type": "integer"
},
"statusUrl": {
"type": [
"string",
"null"
]
},
"url": {
"type": "string"
}
},
"required": [
"domain",
"name",
"category",
"checkedFrom",
"days",
"uptime24h",
"uptimeWindow",
"current",
"incidents",
"lastDown",
"reportsLastHour",
"reports24h",
"statusUrl",
"url"
]
}🟢check_certificate(domain)
Reads the HTTPS certificate of a public domain and reports days until expiry, the expiry date and the issuer.
输入模式
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"description": "Domain to inspect, e.g. \"example.com\"."
}
},
"required": [
"domain"
],
"additionalProperties": false
}输出模式
{
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"daysRemaining": {
"type": "number",
"description": "Negative once expired"
},
"validTo": {
"type": "string"
},
"issuer": {
"type": [
"string",
"null"
]
},
"state": {
"type": "string",
"enum": [
"valid",
"expiring soon",
"EXPIRED"
]
}
},
"required": [
"domain",
"daysRemaining",
"validTo",
"issuer",
"state"
]
}🟢list_monitored_sites(category, query)
The 634 sites checked every 5 minutes, grouped in 17 categories. Without arguments returns the category list with counts; filter by category or a text query to get domains (at most 200 per call).
输入模式
{
"type": "object",
"properties": {
"category": {
"type": "string",
"description": "Category slug or name: social, streaming, ai, work, developer, shopping, finance, banks, gaming, telecom, government, education, messaging, news, travel, health, dating."
},
"query": {
"type": "string",
"description": "Case-insensitive substring of the domain or display name, e.g. \"bank\" or \"google\"."
}
},
"additionalProperties": false
}输出模式
{
"type": "object",
"properties": {
"total": {
"type": "integer"
},
"categories": {
"type": "array",
"items": {
"type": "object",
"properties": {
"slug": {
"type": "string"
},
"name": {
"type": "string"
},
"count": {
"type": "integer"
},
"url": {
"type": "string"
}
},
"required": [
"slug",
"name",
"count",
"url"
]
}
},
"matched": {
"type": "integer"
},
"returned": {
"type": "integer"
},
"category": {
"type": [
"string",
"null"
]
},
"query": {
"type": [
"string",
"null"
]
},
"sites": {
"type": "array",
"items": {
"type": "object",
"properties": {
"domain": {
"type": "string"
},
"name": {
"type": "string"
},
"category": {
"type": "string"
},
"checkedFrom": {
"type": "string",
"enum": [
"sg",
"us"
],
"description": "sg = Singapore, us = Boston"
},
"statusUrl": {
"type": "string"
},
"url": {
"type": "string"
}
},
"required": [
"domain",
"name",
"category",
"url"
]
}
}
},
"required": [
"total"
],
"description": "Without arguments: total + categories. With category or query: total, matched, returned, category, query, sites."
}社区
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