Mycelium Emissions Database MCP Server

by mycelium Your server? Claim it

answering

Mycelium Emissions Database is answering right now. Last checked 2 min ago. It exposes 3 tools. Last commit 3 Sep 2026.

Search company carbon emissions: scope 1, 2 and 3 figures, Mycelium Scores and rankings.

Uptime history 7 days of history

7 days agonow

100.0%

Uptime 24h

93 of 93 checks

Tools

read from the server

416 ms

Response time

average over 24h

Stars

last commit 3 Sep 2026

Nothing serious here today

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

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 2 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add emissions-database --transport http https://mycelium.global/mcp/server

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "emissions-database": {
      "url": "https://mycelium.global/mcp/server"
    }
  }
}

~/.codex/config.toml

[mcp_servers.emissions-database]
url = "https://mycelium.global/mcp/server"

.cursor/mcp.json

{
  "mcpServers": {
    "emissions-database": {
      "url": "https://mycelium.global/mcp/server"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "emissions-database": {
      "url": "https://mycelium.global/mcp/server"
    }
  }
}

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.

emission

get-emission-figures

Get a company's full greenhouse gas emission figures for one reporting year in the OpenCCF data model: per-scope lines (Scope 1, 2, 3 with categories) in kgCO2e, each tagged as reported by the company or estimated by Mycelium. Omit year for the latest reporting year.

entities

search-entities

Search the Mycelium emissions database for companies by name. Returns matching companies with their Mycelium Score and the slug handle used by the other tools. Optionally filter by ISO 3166-1 alpha-3 country code.

entity

get-entity-profile

Get a company's public Mycelium profile: identity and registration, Mycelium Score (0 to 10) with industry rank, Transparency Score, and a per-year summary of total emissions in tonnes CO2e split into reported and estimated. Use search-entities first to find the slug.

Endpoints

URL	Transport	State	Latency	Checked
https://mycelium.global/mcp/server	streamable-http	answering	281 ms	2 min ago

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Mycelium Emissions Database — questions

Answers built from our own checks of this server.

What can Mycelium Emissions Database do?

It exposes 3 tools, read directly from the server on our last check. Among them: get-emission-figures, get-entity-profile, search-entities. 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 Mycelium Emissions Database working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 93 of 93 checks got a reply (100.0%), average response time 416 ms. The bar chart above shows every period we have measured.

How do I connect Mycelium Emissions Database?

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 Mycelium Emissions Database need an API key?

No. Mycelium Emissions Database 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 Mycelium Emissions Database?

It answers our handshake in 416 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.

Is Mycelium Emissions Database open source?

Yes — it is published under the MIT licence and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.