# Hydrogen Studies (remote · hydrogenstudies.com)

Search, compare and summarize 2,200+ published studies on molecular hydrogen (H2) and health.

- Trust score: 74/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-24

## Components

- remote · `hydrogenstudies.com`: 74/100 (this document), [markdown](https://verifymcp.io/servers/com-hydrogenstudies-research/hydrogenstudies.md), [page](https://verifymcp.io/servers/com-hydrogenstudies-research/hydrogenstudies)

## Channel facts

- Endpoint: `https://hydrogenstudies.com/mcp`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.1.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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 2026-10-24.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 79/100
  - 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 1056 tokens (~117/item across 9 items; 8 tools + 1 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 7/100
  - Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 91/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 74% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 8 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 10 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Hydrogen Studies MCP server?

Hydrogen Studies is a hosted endpoint at https://hydrogenstudies.com/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http com-hydrogenstudies-research 'https://hydrogenstudies.com/mcp'
```

### Cursor

```json
{
  "mcpServers": {
    "com-hydrogenstudies-research": {
      "url": "https://hydrogenstudies.com/mcp"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-hydrogenstudies-research": {
      "type": "http",
      "url": "https://hydrogenstudies.com/mcp"
    }
  }
}
```

### Codex

```toml
[mcp_servers.com-hydrogenstudies-research]
url = "https://hydrogenstudies.com/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-hydrogenstudies-research": {
      "type": "remote",
      "url": "https://hydrogenstudies.com/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-hydrogenstudies-research --url 'https://hydrogenstudies.com/mcp' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  com-hydrogenstudies-research:
    url: "https://hydrogenstudies.com/mcp"
```

### Netclaw

```json
{
  "McpServers": {
    "com-hydrogenstudies-research": {
      "Transport": "http",
      "Url": "https://hydrogenstudies.com/mcp"
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-hydrogenstudies-research -t streamable-http -u 'https://hydrogenstudies.com/mcp'
```

### Other

```json
{
  "mcpServers": {
    "com-hydrogenstudies-research": {
      "type": "http",
      "url": "https://hydrogenstudies.com/mcp"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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.

### 2026-10-23 (score 74, 0)

- [functional improvement] Stability: unverified → 0.03

### 2026-10-22 (score 74)

First indexed and scored.

## MCP tools (8)

### `search_studies` (~204 tokens)

Search studies

Find molecular hydrogen studies by keywords and/or filters. Returns compact study records (design, subject, sample size, delivery method, outcome, key finding, url). Sorted by relevance when a query is given, otherwise by strength of evidence.

Input parameters:

- `condition` (string): Condition hub slug or name, e.g. 'blood-pressure' or 'Blood Pressure' (see list_conditions)
- `delivery_method` (string): How hydrogen was administered
- `design` (string): Study design
- `limit` (integer): Default 10
- `min_sample_size` (integer): Minimum participants/animals
- `offset` (integer)
- `outcome` (string): Direction of the reported hydrogen effect
- `query` (string): Full-text search terms, e.g. 'exercise fatigue lactate'
- `sort` (string)
- `subject` (string): Who/what was studied
- `year_from` (integer)
- `year_to` (integer)

### `get_study` (~92 tokens)

Get study

Full record for one study: citation, design, population, H2 protocol (delivery, concentration, dosage), outcome, our plain-language summary and key finding, limitations, quality score with red flags, conditions/mechanisms, and links. Accepts an id, slug, DOI or study URL.

Input parameters:

- `study` (string, required): Study id, slug, DOI, or hydrogenstudies.com/study/... URL

### `get_condition_evidence` (~106 tokens)

Condition evidence profile

Evidence profile for a health condition hub: how many studies, human vs animal vs in-vitro, number of human RCTs and participants, outcome mix, delivery methods, publication years, data coverage, and the strongest studies.

Input parameters:

- `condition` (string, required): Condition hub slug or name (see list_conditions)
- `subject` (string): Restrict the profile to one subject type
- `top_studies` (integer): How many strongest studies to list (default 5)

### `compare_evidence` (~91 tokens)

Compare evidence

Side-by-side evidence profiles for 2–4 groups of studies, e.g. inhalation vs drinking water for one condition, or two conditions. Each group is a set of filters merged over the optional shared filters.

Input parameters:

- `groups` (array, required)
- `shared` (object): Filters applied to every group
- `top_studies` (integer): Strongest studies listed per group (default 3)

### `aggregate_studies` (~192 tokens)

Aggregate studies

Count matching studies grouped by year, subject, design, delivery_method, outcome, country, condition or species — for trends and 'how many' questions. Unknown values are counted separately.

Input parameters:

- `condition` (string): Condition hub slug or name, e.g. 'blood-pressure' or 'Blood Pressure' (see list_conditions)
- `delivery_method` (string): How hydrogen was administered
- `design` (string): Study design
- `group_by` (string, required)
- `min_sample_size` (integer): Minimum participants/animals
- `outcome` (string): Direction of the reported hydrogen effect
- `query` (string): Full-text search terms, e.g. 'exercise fatigue lactate'
- `subject` (string): Who/what was studied
- `top` (integer): Max buckets returned (default 40)
- `year_from` (integer)
- `year_to` (integer)

### `find_related_studies` (~46 tokens)

Related studies

Studies a given study cites, studies that cite it, and the most similar studies by shared health conditions.

Input parameters:

- `study` (string, required): Study id, slug, DOI or URL

### `list_conditions` (~37 tokens)

List conditions

Every health condition hub with its study count, evidence grade (where reviewed) and page URL. Use the slug as the `condition` filter.

### `get_database_stats` (~32 tokens)

Database stats

Size and makeup of the database: total studies, breakdown by subject and design, year range, and field coverage.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/com-hydrogenstudies-research/hydrogenstudies#diagnostics

## Score history

- 2026-10-24: 74
- 2026-10-23: 74
- 2026-10-22: 74

## Common questions

### What is the Hydrogen Studies MCP server?

Hydrogen Studies is an MCP server listed in the public MCP registry as com.hydrogenstudies/research. Search, compare and summarize 2,200+ published studies on molecular hydrogen (H2) and health. This page covers its hosted endpoint (https://hydrogenstudies.com/mcp).

### Is the Hydrogen Studies MCP server safe to use?

Hydrogen Studies scores 74 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Hydrogen Studies MCP server expose?

Hydrogen Studies exposes 8 tools: search_studies, get_study, get_condition_evidence, compare_evidence, aggregate_studies, and 3 more. Their descriptions and schemas cost roughly 800 tokens of context every time the server is loaded.

### Does the Hydrogen Studies MCP server require authentication?

No. We connected to Hydrogen Studies without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the Hydrogen Studies MCP server still maintained?

Hydrogen Studies is still listed as active in the MCP registry. We last reached this channel on 24 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://hydrogenstudies.com/mcp
- Website: https://hydrogenstudies.com/
- Changelog RSS feed: https://verifymcp.io/servers/com-hydrogenstudies-research/hydrogenstudies.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-hydrogenstudies-research/hydrogenstudies.json
- HTML version of this page: https://verifymcp.io/servers/com-hydrogenstudies-research/hydrogenstudies