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Mozilla Data Collective MCP server

Which servers in the official MCP registry are Mozilla Data Collective's own, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-18

← Back to Mozilla Data Collective

Whose server it is
  • Registry namecom.mozilladatacollective/datasetsverified in the MCP registry

The registry name sits under mozilladatacollective.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-18
  • Stateanswerschecked 2026-10-18
  • Tools3
  • Server calls itselfmozilla-data-collective
  • Server version0.1.0
  • Protocol version2025-06-18

On 2026-10-18 the server answered initialize and tools/list without a sign-in. First answer in 179 ms.

Measured dailydaily checks: 2, the first on 2026-10-19
  • Answeredmeasuring2 of the 7 daily checks it takes to print a share
  • Median first answer582 ms
  • Space in an agent's context≈ 944 tokensthe definitions of all its tools (3), which an agent carries on every turn
  • Tool definitionsA · 100 of 100
  • Every tool passes all six checks.

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The state of vendors' MCP servers: method and numbers →

Tools it offers3 tools · read 2026-10-18
  • 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…

  • 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.

  • 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…

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.