Mozilla Data Collective MCP Server

by mozilladatacollective Your server? Claim it

answering

Mozilla Data Collective is answering right now. Last checked 1 min ago. It exposes 3 tools.

Search the Mozilla Data Collective catalog of ethically sourced AI training datasets.

Uptime history 65 hours of history

65 hours agonow

100.0%

Uptime 24h

93 of 93 checks

Tools

read from the server

316 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Mozilla Data Collective 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 1 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add datasets --transport http https://mozilladatacollective.com/api/mcp

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

{
  "mcpServers": {
    "datasets": {
      "url": "https://mozilladatacollective.com/api/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.datasets]
url = "https://mozilladatacollective.com/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "datasets": {
      "url": "https://mozilladatacollective.com/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "datasets": {
      "url": "https://mozilladatacollective.com/api/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.

fetch

fetch

Fetch the full public details of one Mozilla Data Collective dataset by id or slug: description, organization, task, locale, license, format, size, pricing, and its page URL.

filters

list_filters

List every value the search tool's filters accept: the tasks, locales, licenses and formats present in the catalog, plus the sort and date-range options. Task and license values are abbreviations, so taskLabels and licenseLabels spell them out. Filter values are matched exactly, so call this before filtering a search rather than guessing values. Takes no arguments.

search

Search the Mozilla Data Collective catalog of AI training datasets by natural-language query, optionally narrowed by task, language, license, format, price, sample availability or publish date. Returns matching datasets as {id, title, url}; pass an id to the fetch tool for full details. Call list_filters first if you intend to filter — filter values must match the catalog exactly.

Endpoints

URL	Transport	State	Latency	Checked
https://mozilladatacollective.com/api/mcp	streamable-http	answering	363 ms	1 min ago

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Mozilla Data Collective — questions

Answers built from our own checks of this server.

What can Mozilla Data Collective do?

It exposes 3 tools, read directly from the server on our last check. Among them: fetch, list_filters, search. 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 Mozilla Data Collective 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 316 ms. The bar chart above shows every period we have measured.

How do I connect Mozilla Data Collective?

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 Mozilla Data Collective need an API key?

No. Mozilla Data Collective 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 Mozilla Data Collective?

It answers our handshake in 316 ms on average, which is faster than 51% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.