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

base64, hashing, regex, word count, JWT decode and CSS unit conversion. Deterministic, offline.

- Trust score: 64/100 (medium)
- Change this week: +25
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- npm · `@gera-services/mcp-geratools`: 64/100 (this document), [markdown](https://verifymcp.io/servers/services-gera-mcp-geratools/gera-services-mcp-geratools.md), [page](https://verifymcp.io/servers/services-gera-mcp-geratools/gera-services-mcp-geratools)

## Channel facts

- Registry: `npm`
- Package: `@gera-services/mcp-geratools`
- Version: `1.0.1`
- 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 40 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 78/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 788 tokens (~131/item across 6 items; 6 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-geratools -- npx -y @gera-services/mcp-geratools
```

### Codex

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

### opencode

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

### OpenClaw

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

### Hermes

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

### Other

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

## 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.

### 2026-08-02 (score 64, +49)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [functional regression] Tool coverage: 100 → unverified
- [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] Schema quality: unverified → excellent
- [functional improvement] License: unverified → pass
- [functional] First check of Schema quality: unverified
- [functional] Licence: MIT

### 2026-07-31 (score 15, −24)

- [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 (6)

### `base64` (~203 tokens)

Base64 encode / decode (UTF-8 safe)

Encode text or hex bytes to Base64, or decode Base64 / Base64url back to text. Binary-safe via UTF-8 so emoji and non-ASCII round-trip correctly. Supports standard (+ / with = padding) and URL-safe (- _ no padding) variants. Decoding auto-restores padding and falls back to raw hex if the bytes are not valid UTF-8. Runs entirely offline — same logic as the GeraTools Base64 tool.

Input parameters:

- `input` (string, required): The text/hex to encode, or the Base64 string to decode.
- `input_kind` (string): When encoding, treat input as UTF-8 "text" (default) or "hex" bytes.
- `mode` (string, required): "encode" text→Base64, or "decode" Base64→text.
- `variant` (string): Encode output: "std" (default) or "url" (URL-safe Base64url). Ignored when decoding.

### `hash` (~150 tokens)

Cryptographic hash (MD5 / SHA-1 / SHA-256 / SHA-384 / SHA-512)

Compute a cryptographic digest of the input using Node crypto — the same algorithms a browser SubtleCrypto produces. Input can be utf8 (default), hex, or base64; output as hex (default) or base64. Deterministic and offline. Note: MD5 and SHA-1 are provided for checksums/legacy interop only, not for security.

Input parameters:

- `algorithm` (string, required): Hash algorithm: md5, sha1, sha256, sha384, or sha512.
- `input` (string, required): The data to hash.
- `input_encoding` (string): How to interpret the input bytes. Default utf8.
- `output_encoding` (string): Digest output encoding. Default hex.

### `regex_test` (~129 tokens)

Test a regular expression against a string

Run a JavaScript regular expression against a test string and return every match (with index, capture groups and named groups), the match count, and a plain-English, token-by-token explanation of the pattern. Invalid patterns return the engine error rather than throwing. Offline — same logic as the GeraTools Regex Tester.

Input parameters:

- `flags` (string): Regex flags, e.g. "gi". Default "g". (g is forced internally for enumeration.)
- `pattern` (string, required): The regular expression source (no surrounding slashes).
- `test_string` (string, required): The string to run the regex against.

### `word_count` (~65 tokens)

Count words, characters, sentences and reading time

Analyse a block of text: word count, characters (with and without spaces), sentence count, paragraph count, line count, and estimated reading time (200 wpm). Offline — same logic as the GeraTools Word Counter.

Input parameters:

- `text` (string, required): The text to analyse.

### `jwt_decode` (~89 tokens)

Decode a JSON Web Token (no signature verification)

Base64url-decode a JWT into its header and payload JSON, list the iat/nbf/exp time claims as ISO timestamps, and report whether the token is expired. Does NOT verify the signature — never trust an unverified payload for authorization. Offline — same logic as the GeraTools JWT Decoder.

Input parameters:

- `token` (string, required): The JWT, e.g. "header.payload.signature".

### `css_unit_convert` (~152 tokens)

Convert a CSS length between units

Convert a CSS length value from one unit to every other CSS unit (px, rem, em, pt, pc, in, cm, mm, Q). Absolute units use 1in = 96px; rem depends on root font size and em on parent font size (both default 16px). Offline — same logic as the GeraTools CSS Unit Converter.

Input parameters:

- `from` (string, required): The unit of the input value.
- `parent_font_px` (number): Parent font size in px, used for em. Default 16.
- `root_font_px` (number): Root font size in px, used for rem. Default 16.
- `value` (number, required): The numeric length value.

## Diagnostics

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

## Score history

- 2026-08-03: 64
- 2026-08-02: 64
- 2026-08-01: 15
- 2026-07-31: 15
- 2026-07-30: 39
- 2026-07-28: 39
- 2026-07-27: 39

## Links

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