Mycelium Emissions Database

Name: Mycelium Emissions Database
Author: MyceliumNetwork

by MyceliumNetworkversion 1.0.0i★ –iRuns in the cloud

Registry nameglobal.mycelium/emissions-database

Install

Overview

Description from the maker (original English)

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

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Databases & datasets

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
The registry lists no key to fill in.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

Open Settings → Connectors
Press Add custom connector
Paste the address below and press Add
If it asks you to sign in, sign in with the maker

https://mycelium.global/mcp/server

Run this in your terminal

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

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

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

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "emissions-database": {
      "type": "http",
      "url": "https://mycelium.global/mcp/server"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

Open ChatGPT on the web → Settings → Connectors (Apps)
Press Create or Add (some plans need Developer mode under Advanced first)
Paste the address below, give it a name and save
If it asks you to sign in, sign in with the maker

https://mycelium.global/mcp/server

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain mycelium.global (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Databases & datasetsi

More stars than 0% of the other 954 servers in this category
Published to the registry more recently than 30% of the other 954 servers in this category
Basic checks equal to or better than 100% of the other 954 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Mycelium Emissions Database safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 2 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Supabase, MongoDB MCP Server, Elasticsearch MCP Server

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Supabase

by supabase

Supabase’s official server lets AI create tables, query data and review project settings in your Supabase database.

Computer or cloud★ 2,993Apache-2.0Updated today

Install

MongoDB MCP Server

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Runs on your computer★ 1,157Apache-2.0Updated 2 days ago

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Elasticsearch MCP Server

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Runs on your computer★ 315Apache-2.0Updated 14 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Mycelium Emissions Database MCP Server

A hosted Model Context Protocol server that gives AI assistants direct access to the Mycelium open corporate carbon emissions database: company search, Mycelium Scores, and full per-scope greenhouse gas figures.

Endpoint (streamable HTTP): https://mycelium.global/mcp/server
Auth: none - anonymous access with a per-IP rate limit, so a pasted URL works in any MCP client
Info page: https://mycelium.global/mcp
REST API + OpenAPI spec: https://github.com/MyceliumNetwork/api
Website: https://mycelium.global

Setup

Claude (claude.ai, Claude Desktop)

Settings → Connectors → Add custom connector → paste https://mycelium.global/mcp/server.

Claude Code

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

Cursor / generic MCP client

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

Tools

`search-entities`

Search the emissions database for companies by name. Returns matching companies with their Mycelium Score and the slug handle used by the other tools.

Input	Type	Description
`query`	string (required)	Company name or name fragment
`country`	string	Optional ISO 3166-1 alpha-3 filter, e.g. `GBR`, `DEU`
`limit`	integer	Max matches to return, 1-25, default 10

`get-entity-profile`

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.

Input	Type	Description
`entity`	string (required)	Slug from `search-entities`, or Mycelium public id GUID

`get-emission-figures`

Full greenhouse gas figures for one reporting year in the OpenCCF data model: per-scope lines (Scope 1, 2 and 3 with categories) in kgCO2e, each tagged as reported by the company or estimated by Mycelium.

Input	Type	Description
`entity`	string (required)	Slug from `search-entities`, or Mycelium public id GUID
`year`	integer	Reporting year, e.g. 2023. Defaults to the latest on file

Provenance

Every emissions line is tagged as reported by the company or estimated by Mycelium. Clients should preserve that distinction and never present an estimate as a company's own disclosure.

About the data

Mycelium is an open corporate carbon disclosure platform covering hundreds of thousands of entities, built from company reporting, registry data (GLEIF, Companies House and others) and modelled estimates. The same data is available over REST: see the Mycelium Network API.

License

Documentation in this repository is MIT licensed (see LICENSE). Use of the hosted service is governed by the terms at https://mycelium.global.

Mycelium Emissions Database

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Databases & datasetsi

Common questions

Alternatives

Supabase

MongoDB MCP Server

Elasticsearch MCP Server

README from the maker

Mycelium Emissions Database MCP Server

Setup

Claude (claude.ai, Claude Desktop)

Claude Code

Cursor / generic MCP client

Tools

search-entities

get-entity-profile

get-emission-figures

Provenance

About the data

License

`search-entities`

`get-entity-profile`

`get-emission-figures`