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Frontier MCP Server

by openfrontier Your server? Claim it
answering

Frontier is answering right now. Last checked 15 min ago. It exposes 3 tools.

Discover Frontier inference capabilities and read sanitized usage through read-only tools.

Uptime history 18 days of history
18 days agonow
100.0%
Uptime 24h
91 of 91 checks
3
Tools
read from the server
458 ms
Response time
average over 24h
open, no key
Access
streamable-http

Nothing serious here today

Today is the operative word: we check Frontier every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

run in your terminal
claude mcp add frontier --transport http https://openfrontier.dev/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "frontier": {
      "url": "https://openfrontier.dev/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.frontier]
url = "https://openfrontier.dev/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "frontier": {
      "url": "https://openfrontier.dev/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "frontier": {
      "url": "https://openfrontier.dev/mcp"
    }
  }
}

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.

capabilities
get_capabilities
Get the public endpoints, stable aliases, and exact Chat Completions constraints.
models
list_models
List Frontier's current stable public model aliases.
usage
get_usage
Read usage for the Frontier bearer API key on this MCP HTTP request.

Endpoints

URLTransportStateLatencyChecked
https://openfrontier.dev/mcp streamable-http answering 259 ms 15 min ago

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Frontier — questions

Answers built from our own checks of this server.

What can Frontier do?
It exposes 3 tools, read directly from the server on our last check. Among them: get_capabilities, get_usage, list_models. 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 Frontier working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 458 ms. The bar chart above shows every period we have measured.
How do I connect Frontier?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Frontier need an API key?
No. Frontier 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 Frontier?
It answers our handshake in 458 ms on average, which is faster than 39% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.