Can I Use MCP Server

by kaiv Your server? Claim it

answering

Can I Use is answering right now. Last checked moments ago. It exposes 3 tools.

Browser support for web features, live from caniuse. From which version, and is it safe to ship?

Uptime history 59 days of history · worst day 95%

59 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

163 ms

Response time

average over 24h

open, no key

Access

streamable-http

Can I Use missed 2 checks this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 0 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add can-i-use --transport http https://api.kaiv.ai/api/bridge/mcp/can-i-use-5446c68b

Settings → Connectors → Add custom connector, then paste this address

https://api.kaiv.ai/api/bridge/mcp/can-i-use-5446c68b

~/.codex/config.toml

[mcp_servers.can-i-use]
url = "https://api.kaiv.ai/api/bridge/mcp/can-i-use-5446c68b"

.cursor/mcp.json

{
  "mcpServers": {
    "can-i-use": {
      "url": "https://api.kaiv.ai/api/bridge/mcp/can-i-use-5446c68b"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "can-i-use": {
      "type": "http",
      "url": "https://api.kaiv.ai/api/bridge/mcp/can-i-use-5446c68b"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

feature

check_feature_support

Can I use this feature, and from which browser version? Accepts a loose name (":has()", "container queries", "css-grid") and resolves it to a caniuse feature, then returns the earliest continuously-supported version per major browser, global usage percentage, and a conservative safe_to_use flag. Use this first; it answers the whole question in one call.

get_feature_by_id

Support table for an exact caniuse feature id. Use when the id is already known, for example from a previous search. No fuzzy matching is applied.

features

search_features

Find the caniuse feature id for a loose query. Use when a query is ambiguous and you want to choose between candidates before checking support.

Endpoints

URL	Transport	State	Latency	Checked
https://api.kaiv.ai/api/bridge/mcp/can-i-use-5446c68b	streamable-http	answering	109 ms	0 min ago

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Can I Use — questions

Answers built from our own checks of this server.

What can Can I Use do?

It exposes 3 tools, read directly from the server on our last check. Among them: check_feature_support, get_feature_by_id, search_features. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Can I Use working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 163 ms. The bar chart above shows every period we have measured.

How do I connect Can I Use?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Can I Use need an API key?

No. Can I Use completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Can I Use?

It answers our handshake in 163 ms on average, which is faster than 79% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.