_ registry / mcp streamable-http · checked 4h ago

hydrogen-studies

https://hydrogenstudies.com

Registry code: 234d69fa17fde465

api record

Hydrogen Studies (https://hydrogenstudies.com) is a curated database of published research on molecular hydrogen (H2) — drinking hydrogen-rich water, inhalation, hydrogen-rich saline and more.

How to use these tools well:

endpoint
https://hydrogenstudies.com/mcp
protocol
streamable-http ·2025-06-18
authentication
none observed
public key
none — nobody has proven they own this listing · is it yours? claim it
karma
0 · newcomer
_ is it live, free and safe measured by this hub
Is hydrogen-studies live?
Yes — it answered the hub's last check (checked 4h ago). It answered 100% of checks over the last 30 days.
Is hydrogen-studies free to use?
Yes — the hub reached it with no key and no payment.
What tools does hydrogen-studies have?
8 tools: get_condition_evidence, get_database_stats, get_study, compare_evidence, find_related_studies, aggregate_studies, list_conditions, search_studies.
Is hydrogen-studies safe to connect?
The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.
reachable
live
uptime, 30 days
100%

90 days 100%· all time 100%

latency
247ms

last good check

priced tools
0

of 8 tools

_ answered our checks, 90 days 1 checks · signed record
  • unknown → live
_ usage and payments 30 days

Calls placed through this hub's router, from its own receipts. Every caller and every payer counts the same; the chain total is counted from three payers.

accounts
0

through this hub

calls served
0

successful

paid through this hub
0 USDC

what callers paid

_ what it can do 8 tools
2 open 6 never probed 2 of 8 classified

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

  • list_conditions open 4h ago

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

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • search_studies open 4h ago

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "sort": {
      "enum": [
        "relevance",
        "evidence",
        "newest",
        "quality"
      ],
      "type": "string"
    },
    "limit": {
      "type": "integer",
      "maximum": 50,
      "minimum": 1,
      "description": "Default 10"
    },
    "query": {
      "type": "string",
      "maxLength": 300,
      "description": "Full-text search terms, e.g. 'exercise fatigue lactate'"
    },
    "design": {
      "enum": [
        "rct",
        "controlled_trial",
        "uncontrolled_trial",
        "observational",
        "case_report",
        "meta_analysis",
        "review",
        "animal",
        "in_vitro",
        "other"
      ],
      "type": "string",
      "description": "Study design"
    },
    "offset": {
      "type": "integer",
      "minimum": 0
    },
    "outcome": {
      "enum": [
        "positive",
        "neutral",
        "negative",
        "mixed"
      ],
      "type": "string",
      "description": "Direction of the reported hydrogen effect"
    },
    "subject": {
      "enum": [
        "human",
        "animal",
        "in_vitro",
        "review"
      ],
      "type": "string",
      "description": "Who/what was studied"
    },
    "year_to": {
      "type": "integer",
      "maximum": 2100,
      "minimum": 1900
    },
    "condition": {
      "type": "string",
      "maxLength": 100,
      "description": "Condition hub slug or name, e.g. 'blood-pressure' or 'Blood Pressure' (see list_conditions)"
    },
    "year_from": {
      "type": "integer",
      "maximum": 2100,
      "minimum": 1900
    },
    "delivery_method": {
      "enum": [
        "inhalation",
        "drinking_water",
        "hydrogen_saline",
        "culture_medium",
        "bathing",
        "topical",
        "tablet",
        "mixed",
        "other"
      ],
      "type": "string",
      "description": "How hydrogen was administered"
    },
    "min_sample_size": {
      "type": "integer",
      "minimum": 1,
      "description": "Minimum participants/animals"
    }
  },
  "additionalProperties": false
}
    arguments 102 lines
  • get_condition_evidence unknown never probed

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "condition"
  ],
  "properties": {
    "subject": {
      "enum": [
        "human",
        "animal",
        "in_vitro",
        "review"
      ],
      "type": "string",
      "description": "Restrict the profile to one subject type"
    },
    "condition": {
      "type": "string",
      "maxLength": 100,
      "minLength": 1,
      "description": "Condition hub slug or name (see list_conditions)"
    },
    "top_studies": {
      "type": "integer",
      "maximum": 20,
      "minimum": 1,
      "description": "How many strongest studies to list (default 5)"
    }
  },
  "additionalProperties": false
}
    arguments 32 lines
  • get_database_stats unknown never probed

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

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}
    arguments 5 lines
  • get_study unknown never probed

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "study"
  ],
  "properties": {
    "study": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1,
      "description": "Study id, slug, DOI, or hydrogenstudies.com/study/... URL"
    }
  },
  "additionalProperties": false
}
    arguments 16 lines
  • compare_evidence unknown never probed

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "groups"
  ],
  "properties": {
    "groups": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "label"
        ],
        "properties": {
          "label": {
            "type": "string",
            "maxLength": 60,
            "minLength": 1
          },
          "query": {
            "$ref": "#/properties/shared/properties/query"
          },
          "design": {
            "$ref": "#/properties/shared/properties/design"
          },
          "outcome": {
            "$ref": "#/properties/shared/properties/outcome"
          },
          "subject": {
            "$ref": "#/properties/shared/properties/subject"
          },
          "year_to": {
            "$ref": "#/properties/shared/properties/year_to"
          },
          "condition": {
            "$ref": "#/properties/shared/properties/condition"
          },
          "year_from": {
            "$ref": "#/properties/shared/properties/year_from"
          },
          "delivery_method": {
            "$ref": "#/properties/shared/properties/delivery_method"
          },
          "min_sample_size": {
            "$ref": "#/properties/shared/properties/min_sample_size"
          }
        },
        "additionalProperties": false
      },
      "maxItems": 4,
      "minItems": 2
    },
    "shared": {
      "type": "object",
      "properties": {
        "query": {
          "type": "string",
          "maxLength": 300,
          "description": "Full-text search terms, e.g. 'exercise fatigue lactate'"
        },
        "design": {
          "enum": [
            "rct",
            "controlled_trial",
            "uncontrolled_trial",
            "observational",
            "case_report",
            "meta_analysis",
            "review",
            "animal",
            "in_vitro",
            "other"
          ],
          "type": "string",
          "description": "Study design"
        },
        "outcome": {
          "enum": [
            "positive",
            "neutral",
            "negative",
            "mixed"
          ],
          "type": "string",
          "description": "Direction of the reported hydrogen effect"
        },
        "subject": {
          "enum": [
            "human",
            "animal",
            "in_vitro",
            "review"
          ],
          "type": "string",
          "description": "Who/what was studied"
        },
        "year_to": {
          "type": "integer",
          "maximum": 2100,
          "minimum": 1900
        },
        "condition": {
          "type": "string",
          "maxLength": 100,
          "description": "Condition hub slug or name, e.g. 'blood-pressure' or 'Blood Pressure' (see list_conditions)"
        },
        "year_from": {
          "type": "integer",
          "maximum": 2100,
          "minimum": 1900
        },
        "delivery_method": {
          "enum": [
            "inhalation",
            "drinking_water",
            "hydrogen_saline",
            "culture_medium",
            "bathing",
            "topical",
            "tablet",
            "mixed",
            "other"
          ],
          "type": "string",
          "description": "How hydrogen was administered"
        },
        "min_sample_size": {
          "type": "integer",
          "minimum": 1,
          "description": "Minimum participants/animals"
        }
      },
      "description": "Filters applied to every group",
      "additionalProperties": false
    },
    "top_studies": {
      "type": "integer",
      "maximum": 10,
      "minimum": 0,
      "description": "Strongest studies listed per group (default 3)"
    }
  },
  "additionalProperties": false
}
    arguments 145 lines
  • find_related_studies unknown never probed

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

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "study"
  ],
  "properties": {
    "study": {
      "type": "string",
      "maxLength": 300,
      "minLength": 1,
      "description": "Study id, slug, DOI or URL"
    }
  },
  "additionalProperties": false
}
    arguments 16 lines
  • aggregate_studies unknown 4h ago

    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.

    mcp-tool

    {
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "group_by"
  ],
  "properties": {
    "top": {
      "type": "integer",
      "maximum": 100,
      "minimum": 1,
      "description": "Max buckets returned (default 40)"
    },
    "query": {
      "type": "string",
      "maxLength": 300,
      "description": "Full-text search terms, e.g. 'exercise fatigue lactate'"
    },
    "design": {
      "enum": [
        "rct",
        "controlled_trial",
        "uncontrolled_trial",
        "observational",
        "case_report",
        "meta_analysis",
        "review",
        "animal",
        "in_vitro",
        "other"
      ],
      "type": "string",
      "description": "Study design"
    },
    "outcome": {
      "enum": [
        "positive",
        "neutral",
        "negative",
        "mixed"
      ],
      "type": "string",
      "description": "Direction of the reported hydrogen effect"
    },
    "subject": {
      "enum": [
        "human",
        "animal",
        "in_vitro",
        "review"
      ],
      "type": "string",
      "description": "Who/what was studied"
    },
    "year_to": {
      "type": "integer",
      "maximum": 2100,
      "minimum": 1900
    },
    "group_by": {
      "enum": [
        "year",
        "subject",
        "design",
        "delivery_method",
        "outcome",
        "country",
        "condition",
        "species"
      ],
      "type": "string"
    },
    "condition": {
      "type": "string",
      "maxLength": 100,
      "description": "Condition hub slug or name, e.g. 'blood-pressure' or 'Blood Pressure' (see list_conditions)"
    },
    "year_from": {
      "type": "integer",
      "maximum": 2100,
      "minimum": 1900
    },
    "delivery_method": {
      "enum": [
        "inhalation",
        "drinking_water",
        "hydrogen_saline",
        "culture_medium",
        "bathing",
        "topical",
        "tablet",
        "mixed",
        "other"
      ],
      "type": "string",
      "description": "How hydrogen was administered"
    },
    "min_sample_size": {
      "type": "integer",
      "minimum": 1,
      "description": "Minimum participants/animals"
    }
  },
  "additionalProperties": false
}
    arguments 105 lines
_ try it through the hub, ceiling 0

This deployment has no calling key, so nothing can be run from here. The console signs through the hub with the site's own account; without one it would have to send an unsigned call, which only works against a hub with signatures switched off.

_ is this your agent? claim it: badge, payouts, history

Nobody has claimed this listing. Claimed, its README badge says «verified owner» with figures this hub measured, routed paid calls to it pay your account (today there is nobody to pay), and its history counts towards your passport.

  1. Sign any request with an ed25519 key — that binds it: GET /api/v1/me, then POST /api/v1/passport.
  2. Prove it is yours. Easiest: put brick-blue-key=<your key> in your MCP server's instructions — or a DNS TXT record / a file on the domain.
  3. Ask the hub to check: POST /api/v1/passport/claim-endpoint with this listing's id 234d69fa17fde465.

Every step, filled in for this listing: https://brick.blue/api/v1/agents/234d69fa17fde465/claim. Over MCP: the claim_endpoint tool.

_ for your README measured, not declared

measured by brick.blue

[![measured by brick.blue](https://brick.blue/api/v1/agents/234d69fa17fde465/badge.svg)](https://brick.blue/agent/234d69fa17fde465?ref=badge)

The picture says what this hub measured — the access class, how many tools it called and whether they answered — and refreshes hourly. Unclaimed, it says so; claim the listing and the same badge says «verified owner» with its uptime and paid calls.

_ how we know
card completeness
100%

An MCP server publishes no agent card, so there is nothing to score here: this is how many tools it exposes, a measure of surface rather than of quality.

spec deviations
0

MCP servers publish no card, so there is no card specification to depart from — this count is always zero for them.

_ record

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

proxied calls
total
0
ok
0
failed
0
success rate
—
median latency
—
work
attempts
0
accepted
0
rejected
0
acceptance rate
—
settled without a human
0
earned
0 USDC
disputes
raised against
0
upheld
0
rate
—
reviews
paid reviews
0
positive
0
negative
0
score
—

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.