# services.gera/mcp-gera-data (npm · @gera-services/mcp-gera-data)

Discover & query Gera's 30 attested open UK/US government datasets, each with signed provenance.

- Trust score: 63/100 (medium)
- Change this week: +24
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@gera-services/mcp-gera-data`: 63/100 (this document), [markdown](https://verifymcp.io/servers/services-gera-mcp-gera-data/gera-services-mcp-gera-data.md), [page](https://verifymcp.io/servers/services-gera-mcp-gera-data/gera-services-mcp-gera-data)

## Channel facts

- Registry: `npm`
- Package: `@gera-services/mcp-gera-data`
- Version: `1.0.0`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 19/100
  - Repository check failed: the declared repository URL returned HTTP 404.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 27 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 72/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 729 tokens (~145/item across 5 items; 5 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 23/100
  - Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add services-gera-mcp-gera-data -- npx -y @gera-services/mcp-gera-data
```

### Codex

```bash
codex mcp add services-gera-mcp-gera-data -- npx -y @gera-services/mcp-gera-data
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "services-gera-mcp-gera-data": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@gera-services/mcp-gera-data"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add services-gera-mcp-gera-data --command npx --arg -y --arg @gera-services/mcp-gera-data
```

### Hermes

```yaml
mcp_servers:
  services-gera-mcp-gera-data:
    command: "npx"
    args: ["-y", "@gera-services/mcp-gera-data"]
```

### Other

```json
{
  "mcpServers": {
    "services-gera-mcp-gera-data": {
      "command": "npx",
      "args": [
        "-y",
        "@gera-services/mcp-gera-data"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-08-03 (score 63, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 62, +47)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [functional improvement] Schema quality: unverified → excellent
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] Stability: unverified → 0.20
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] License: unverified → pass
- [functional] Licence: MIT

### 2026-08-01 (score 15, +15)

- [functional improvement] Tool coverage: unverified → 100

### 2026-07-31 (score 0, −39)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-27 (score 39)

First indexed and scored.

## MCP tools (5)

### `list_datasets` (~135 tokens)

List all attested Gera open datasets

List the catalog of verified open datasets Gera serves: for each, the id (use it with the other tools), title, source publisher, source URL, licence, reference period (as-of), row count, coverage, and the queryable columns (id, label, type, unit, whether filterable/sortable). Use this first to discover what data is available, then call get_dataset / query_dataset / get_attestation by id. All data is public-domain / OGL v3.0 / CC-BY with attribution.

Input parameters:

- `country` (string): Optional filter by country/coverage. Defaults to all.

### `get_dataset` (~122 tokens)

Get one dataset’s full metadata + attestation summary

Return everything about one dataset EXCEPT its rows: title, description, coverage, full provenance (source, URL, licence, attribution, as-of, derivation notes), the complete column schema, the row count, and a compact attestation summary (content hash + key id) so you know it is signed. Pass a dataset id from list_datasets. Use query_dataset to fetch the rows, get_attestation for the full signed receipt.

Input parameters:

- `id` (string, required): Dataset id, e.g. "uk-council-tax" (from list_datasets).

### `query_dataset` (~252 tokens)

Query a dataset’s rows (filter, sort, paginate)

Fetch verified rows from a dataset with optional single-column filter, sort, and pagination — same semantics as the Gera Data API. filter_column must be a filterable column; for number columns the filter is an exact match, for string columns a case-insensitive substring match. sort_by must be a sortable column. Returns the page of rows plus total/totalPages and the dataset version, so a returned value can be cited precisely (dataset id + version + source). Default page_size 50, max 500. For a full-dataset content hash, page through all rows or use get_attestation.

Input parameters:

- `filter_column` (string): Filterable column id to filter on. Omit for no filter.
- `filter_value` (string): Value to match (exact for number columns, substring for string columns).
- `id` (string, required): Dataset id (from list_datasets).
- `page` (integer): 1-based page number. Defaults to 1.
- `page_size` (integer): Rows per page (1-500). Defaults to 50.
- `sort_by` (string): Sortable column id to sort by.
- `sort_dir` (string): Sort direction. Defaults to asc.

### `get_attestation` (~151 tokens)

Get the signed Gera Vouch attestation for a dataset

Return the cryptographically signed Gera Vouch attestation for a dataset version: a claim object (dataset id, version, row count, SHA-256 content hash over the rows, source, source URL, licence, attribution, as-of, issuer), an Ed25519 signature, and the public key + verification recipe. Any party re-canonicalises the claim (sorted-key UTF-8 JSON) and verifies the signature against the public key — proving the dataset content came from the named source under the named licence and was not altered. This is a proof-of-provenance receipt; it is NOT a warranty of fitness for purpose.

Input parameters:

- `id` (string, required): Dataset id (from list_datasets).

### `get_vouch_public_key` (~69 tokens)

Get the public key to verify Gera attestations

Return the Ed25519 public key (+ key_id and verification recipe) used to sign every Gera Vouch dataset attestation, so any party can independently verify a get_attestation receipt. This is the same Gera public key the Gera Data API and Gera Verify MCP publish.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/services-gera-mcp-gera-data/gera-services-mcp-gera-data#diagnostics

## Score history

- 2026-08-03: 63
- 2026-08-02: 62
- 2026-08-01: 15
- 2026-07-31: 0
- 2026-07-30: 39
- 2026-07-28: 39
- 2026-07-27: 39

## Links

- npm package: https://www.npmjs.com/package/@gera-services/mcp-gera-data
- Socket report: https://socket.dev/npm/package/@gera-services/mcp-gera-data
- Website: https://gera.services/
- Changelog RSS feed: https://verifymcp.io/servers/services-gera-mcp-gera-data/gera-services-mcp-gera-data/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/services-gera-mcp-gera-data/gera-services-mcp-gera-data/changelog.json
- HTML version of this page: https://verifymcp.io/servers/services-gera-mcp-gera-data/gera-services-mcp-gera-data