Is This Site Down?
Check if any website is down, from two continents, with uptime history and TLS expiry
Should I use this
Quality & Safety
A
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
~2,284Tokens (tool definitions)
~4.5 KBTypical response size
Moderate attention impact (1.78% of 128k context)
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"is-it-down": {
"url": "https://downforjustmeoreveryone.com/mcp"
}
}
}Remote endpoints
https://downforjustmeoreveryone.com/mcpstreamable-httpWhat it can do
Tool inventory
Tools (5)
🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢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.
Input Schema
{
"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
}Output Schema
{
"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.
Input Schema
{
"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
}Output Schema
{
"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.
Input Schema
{
"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
}Output Schema
{
"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.
Input Schema
{
"type": "object",
"properties": {
"domain": {
"type": "string",
"description": "Domain to inspect, e.g. \"example.com\"."
}
},
"required": [
"domain"
],
"additionalProperties": false
}Output Schema
{
"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).
Input Schema
{
"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
}Output Schema
{
"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."
}Community
Evidence
Recent observations
verifiedversion not recorded5 tools
verifiedversion not recorded5 tools
verifiedversion not recorded5 tools