MCP Registry Validator — Check Endpoints Actually Resolve
Check an MCP endpoint resolves: liveness, live tool list, schema drift. Free.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
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": {
"mcp-uptime": {
"url": "https://mcp-uptime.theopslog.workers.dev/mcp"
}
}
}Remote endpoints
https://mcp-uptime.theopslog.workers.dev/mcpstreamable-httpWhat it can do
Tool inventory
Tools (4)
🟢check_mcp_endpoint(url, include_tools)
Probe an MCP endpoint right now: is it alive, which transport it speaks, how many tools it exposes, and whether its tool schema changed since the last check. Use before depending on a third-party MCP server.
Input Schema
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "Public http(s) URL of the MCP endpoint to inspect."
},
"include_tools": {
"type": "boolean",
"description": "Return the full tool list, not just the count."
}
},
"required": [
"url"
],
"additionalProperties": false
}🟢get_uptime(url, days)
Uptime history for an MCP endpoint over the last N days (max 30), with incident windows. Reads stored history; does not probe.
Input Schema
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "Public http(s) URL of the MCP endpoint to inspect."
},
"days": {
"type": "integer",
"minimum": 1,
"maximum": 30,
"description": "Window in days. Default 30."
}
},
"required": [
"url"
],
"additionalProperties": false
}🟢get_known_tools(url)
The tool list last observed at an MCP endpoint, with the timestamp of the most recent schema change. Reads stored history; does not probe.
Input Schema
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "Public http(s) URL of the MCP endpoint to inspect."
}
},
"required": [
"url"
],
"additionalProperties": false
}🟢check_schema_drift(url)
Probe an MCP endpoint and diff its tool schema against the last stored snapshot: tools added, removed, or whose description/inputSchema changed. Schema drift fails quietly mid-run, which is why it is worth checking.
Input Schema
{
"type": "object",
"properties": {
"url": {
"type": "string",
"description": "Public http(s) URL of the MCP endpoint to inspect."
}
},
"required": [
"url"
],
"additionalProperties": false
}Community
Evidence