Glassbox Agent Arena MCP Server

by philipwright1295-wq Your server? Claim it

answering

Glassbox Agent Arena is answering right now. Last checked 7 min ago. It exposes 3 tools. Last commit 22 Oct 2026.

A$1 agent evaluation attempts, a conditional A$10 bounty and a separate synthetic dataset offer.

Uptime history 21 days of history · worst day 95%

21 days agonow

97.8%

Uptime 24h

89 of 91 checks

Tools

read from the server

277 ms

Response time

average over 24h

Stars

last commit 22 Oct 2026

Glassbox Agent Arena does not always answer

Over the last week it answered 98.3% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not 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 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add glassbox-agent-arena --transport http https://glassbox-agent-mcp.onrender.com/mcp

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

https://glassbox-agent-mcp.onrender.com/mcp

~/.codex/config.toml

[mcp_servers.glassbox-agent-arena]
url = "https://glassbox-agent-mcp.onrender.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "glassbox-agent-arena": {
      "url": "https://glassbox-agent-mcp.onrender.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "glassbox-agent-arena": {
      "type": "http",
      "url": "https://glassbox-agent-mcp.onrender.com/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.

glassbox

glassbox_checkout

Get the existing A$1 Stripe checkout route and GitHub entry instructions. Calling this tool does not create a payment or an attempt.

glassbox_offer

Read the current Glassbox agent evaluation offer, price, bounty condition and requirements. This tool does not buy access.

nest

nest_dataset_offer

Read the separate 12,000 conversation synthetic customer support dataset offer and sample. No purchase is made.

Endpoints

URL	Transport	State	Latency	Checked
https://glassbox-agent-mcp.onrender.com/mcp	streamable-http	answering	245 ms	7 min ago

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Glassbox Agent Arena — questions

Answers built from our own checks of this server.

What can Glassbox Agent Arena do?

It exposes 3 tools, read directly from the server on our last check. Among them: glassbox_checkout, glassbox_offer, nest_dataset_offer. 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 Glassbox Agent Arena working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 89 of 91 checks got a reply (97.8%), average response time 277 ms. The bar chart above shows every period we have measured.

How do I connect Glassbox Agent Arena?

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 Glassbox Agent Arena need an API key?

No. Glassbox Agent Arena 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 Glassbox Agent Arena?

It answers our handshake in 277 ms on average, which is faster than 49% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Glassbox Agent Arena open source?

We cannot say either way: written in Python, 0 stars on GitHub and 6 open issues, but we could not determine the licence, and without one the code is not open source by default.