Is This Site Down?
Check if any website is down, from two continents, with uptime history and TLS expiry
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
~2,284トークン数（ツール定義）
~4.5 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 1.78%）
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": {
"is-it-down": {
"url": "https://downforjustmeoreveryone.com/mcp"
}
}
}リモートエンドポイント
https://downforjustmeoreveryone.com/mcpstreamable-httpできること
ツール一覧
ツール（5）
🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟢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.
入力スキーマ
{
"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
}出力スキーマ
{
"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.
入力スキーマ
{
"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
}出力スキーマ
{
"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.
入力スキーマ
{
"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
}出力スキーマ
{
"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.
入力スキーマ
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"description": "Domain to inspect, e.g. \"example.com\"."
}
},
"required": [
"domain"
],
"additionalProperties": false
}出力スキーマ
{
"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).
入力スキーマ
{
"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
}出力スキーマ
{
"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."
}コミュニティ
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