Sustainability Auditor MCP Server

by uxjulie-climate Your server? Claim it

answering

Sustainability Auditor is answering right now. Last checked 10 min ago. It exposes 4 tools.

Website carbon footprint auditor. CO2/page, grade A–F, green hosting check, and recommendations.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 91 days of history · worst day 92%

91 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

179 ms

Response time

average over 24h

OAuth sign-in

Access

streamable-http

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 10 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add sustainability-auditor --transport http https://mcp.climateux.net/mcp

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

https://mcp.climateux.net/mcp

~/.codex/config.toml

[mcp_servers.sustainability-auditor]
url = "https://mcp.climateux.net/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "sustainability-auditor": {
      "url": "https://mcp.climateux.net/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "sustainability-auditor": {
      "type": "http",
      "url": "https://mcp.climateux.net/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Available tools 4

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

audit

audit_website

Audit a website for its digital carbon footprint. Returns sustainability score (A-F), CO2 grams per page view, green hosting status, page weight, and recommendations. Results cached 24h. New audits take ~45-90 seconds. Data source: ClimateUX (climateux.net).

benchmark

get_benchmark_stats

Get aggregate benchmark statistics from ClimateUX's database of 500+ audited websites. Includes average CO2 per page view, average sustainability score, green hosting rate. No API key required. Data source: ClimateUX (climateux.net).

domain

get_domain_history

Get historical carbon audit data and trend for a domain. Returns audits ordered newest first, plus trend: improving / stable / declining. Data source: ClimateUX (climateux.net).

register_api_key

Register for a free ClimateUX API key (10 audits/month, no credit card). Idempotent — same email always returns the same key.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.climateux.net/mcp	streamable-http	sign-in	167 ms	10 min ago

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Sustainability Auditor — questions

Answers built from our own checks of this server.

What can Sustainability Auditor do?

It exposes 4 tools, read directly from the server on our last check. Among them: audit_website, get_benchmark_stats, get_domain_history, register_api_key. 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 Sustainability Auditor 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 179 ms. The bar chart above shows every period we have measured.

Is Sustainability Auditor still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect Sustainability Auditor?

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. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Sustainability Auditor?

No API key is involved. Sustainability Auditor answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Sustainability Auditor?

It answers our handshake in 179 ms on average, which is faster than 75% 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.