# Dataset licence facts

> Licence facts for Hugging Face datasets: declared licence, files, sources, conflicts.

- name: uk.datalicense/dataset-licence
- version: 1.0.1
- connection class: R0 (autonomous)
- trust: 82/100 flags: no-repository
- quality: 80/100 (good)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/uk.datalicense%2Fdataset-licence
- tools: https://api.protogrid.dev/v1/servers/uk.datalicense%2Fdataset-licence/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "dataset-licence": {
      "type": "http",
      "url": "https://mcp.datalicense.uk/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 97
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-93% +updated-3d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 80/100 (good)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 75 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: dataset_licence (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); find_datasets (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
- pass `tools.token_cost`: about 668 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: 100 (weight 15)

- pass `stability.changes`: 4 tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name
- pass `stability.new_links`: no tool change named a new site

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 2, about 668 tokens to load them all
- tool set hash: 09abd857ff474d1e3f8bffe183ccc7c7
- tools last changed: 2026-10-30T18:56:19.314Z
- badge: [![protogrid quality](https://protogrid.dev/badge/uk.datalicense/dataset-licence.svg)](https://protogrid.dev/servers/uk.datalicense/dataset-licence)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-30 `find_datasets` changed (description)
  - before: Search the 5,000 most downloaded Hugging Face datasets within the weekly index of 50,000 datasets, returning matches in descending order of download count. Optionally filter by signal, task tag and declared licence ID; all supplied filters must match. Returns up to 50 results; licence_evidence links to the Hub file, API record or file list checked for a declared licence. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
  - after: Search the 5,000 most downloaded Hugging Face datasets in the daily build, returning matches in descending order of download count. Optionally filter by signal, task tag and declared licence ID; all supplied filters must match. Returns up to 50 results; licence_evidence links to the Hub file, API record or file list checked for a declared licence. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
- 2026-10-30 `dataset_licence` changed (description, inputSchema)
  - before: Retrieve licence facts for one Hugging Face dataset: declared licence, where it was declared, recorded source datasets, detected licence files and a signal. Each licence value comes with an evidence URL linking to the Hub file, API record, file list or Hub page that was checked, with a commit-specific link where available. For datasets in the weekly index of popular datasets, facts come from the index by default. Other public datasets are checked live on the Hugging Face Hub. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
  - after: Retrieve licence facts for one Hugging Face dataset: declared licence, where it was declared, recorded source datasets, detected licence files and a signal. Each licence value comes with an evidence URL linking to the Hub file, API record, file list or Hub page that was checked, with a commit-specific link where available. For datasets in the daily build, facts come from the build by default. Other public datasets are checked live on the Hugging Face Hub. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
- 2026-10-30 `find_datasets` changed (description)
  - before: List popular Hugging Face datasets from the published index, ordered by download count from highest to lowest. Optionally filter by signal, task tag and declared licence ID; all supplied filters must match. Returns up to 50 results. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
  - after: Search the 5,000 most downloaded Hugging Face datasets within the weekly index of 50,000 datasets, returning matches in descending order of download count. Optionally filter by signal, task tag and declared licence ID; all supplied filters must match. Returns up to 50 results; licence_evidence links to the Hub file, API record or file list checked for a declared licence. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
- 2026-10-30 `dataset_licence` changed (description, inputSchema)
  - before: Retrieve published licence facts for one Hugging Face dataset in this site's index: declared licence, where it was declared, recorded source datasets, detected licence files and a signal. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
  - after: Retrieve licence facts for one Hugging Face dataset: declared licence, where it was declared, recorded source datasets, detected licence files and a signal. Each licence value comes with an evidence URL linking to the Hub file, API record, file list or Hub page that was checked, with a commit-specific link where available. For datasets in the weekly index of popular datasets, facts come from the index by default. Other public datasets are checked live on the Hugging Face Hub. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.

Full history: https://api.protogrid.dev/v1/servers/uk.datalicense%2Fdataset-licence/changes

## Remotes

- https://mcp.datalicense.uk/mcp (streamable-http, auth none, reachable true, uptime30d 0.9285714)

## Packages

_none_

## Tools (2)

- `dataset_licence`: Retrieve licence facts for one Hugging Face dataset: declared licence, where it was declared, recorded source datasets, detected licence files and a signal. Each licence value comes with an evidence URL linking to the Hub file, API record, file list or Hub page that was checked, with a commit-specific link where available. For datasets in the daily build, facts come from the build by default. Other public datasets are checked live on the Hugging Face Hub. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.
- `find_datasets`: Search the 5,000 most downloaded Hugging Face datasets in the daily build, returning matches in descending order of download count. Optionally filter by signal, task tag and declared licence ID; all supplied filters must match. Returns up to 50 results; licence_evidence links to the Hub file, API record or file list checked for a declared licence. Signal values: permissive = permissive or share-alike licence reported; restrictive = use restrictions reported; conflict = possible licence conflict; unclear = insufficient or unrecognised licence information. These signals do not establish permission to use a dataset. Licence facts reported by the dataset and its declared sources. Not legal advice, and not a grant of permission to use the dataset.