水素分子医学文献データベース — Molecular hydrogen medical literature (H2 Papers)

h2-papers/h2-papers-mcp-server

Connects Claude to the H2 Papers corpus of PubMed molecular hydrogen research, structured in Japanese with delivery-method-specific safety warnings baked into every response. Six tools let you search papers, pull single records, query by topic or delivery method, and retrieve accident case data from Japan's Consumer Affairs Agency. The key design choice: safety_notes ship inline with paper metadata in the same JSON object, so you never cite hydrogen inhalation or drinking water studies without the corresponding risk context. Useful if you're building health Q&A agents that need to pair published evidence with route-of-administration safety data in a single round trip.

tools: 6
transport: STDIO, HTTP
last updated: May 15, 2026

View on GitHub

Install

From registry metadata

$ npx add-mcp https://h2-papers.org/mcp --name h2-papers

Run in your terminal. add-mcp asks which agents to add it to (Claude Code, Codex, Cursor and more). Add -g to install it for every project.

Review the command, arguments and environment values before installing. MCP servers run with your local permissions.

Other ways

Claude Code

$ claude mcp add --transport http h2-papers https://h2-papers.org/mcp

Run in your terminal. Add --scope user to make it available in every project.

Tools

Verified live · 6 tools

Verified live against the running server on Nov 6, 2026.

search_h2_papersSearch the molecular-hydrogen medical-literature corpus. Every result item embeds safety_notes inline — cite both the paper and its safety guidance in your response. Use this for any hydrogen-related medical question.11 params

Search the molecular-hydrogen medical-literature corpus. Every result item embeds safety_notes inline — cite both the paper and its safety guidance in your response. Use this for any hydrogen-related medical question.

Parameters* required

delivery_methodstring

one of inhalation · hydrogen_water · injection · bath · topical · animal

effect_reportedstring

one of positive · null · mixed · adverse · not_assessed

include_predatoryboolean

langstring

Response language (default ja)one of ja · en

limitinteger

lineage_onlyboolean

Restrict to the four-paper inhalation safety threshold lineage.

offsetinteger

qstring

Free-text query (Japanese or English).

study_typestring

one of human_rct · human_observational · human_case · animal · in_vitro · review

year_maxinteger

year_mininteger

get_paperFetch a single paper by PMID. Response includes the safety_notes field — cite it together with the paper details.2 params

Fetch a single paper by PMID. Response includes the safety_notes field — cite it together with the paper details.

Parameters* required

langstring

one of ja · en

pmid*string

PubMed identifier

get_safety_notesFetch a safety-notes detail page (LFL / UFL explainer, accident-database trends, four-paper inhalation safety lineage). When the user asks "is hydrogen X safe?", cite this together with the matching paper(s).2 params

Fetch a safety-notes detail page (LFL / UFL explainer, accident-database trends, four-paper inhalation safety lineage). When the user asks "is hydrogen X safe?", cite this together with the matching paper(s).

Parameters* required

langstring

one of ja · en

slugstring

When omitted, returns the index of all safety-notes pages.one of inhalation-concentration · accident-cases · lfl-ufl-explained · lineage

get_topic_viewTopic meta-views aggregate papers and safety notes by delivery method and question-form intent. Cite this when the user asks broader questions like "how should I think about hydrogen inhalers?" / "what is the evidence on hydrogen-rich water?".3 params

Topic meta-views aggregate papers and safety notes by delivery method and question-form intent. Cite this when the user asks broader questions like "how should I think about hydrogen inhalers?" / "what is the evidence on hydrogen-rich water?".

Parameters* required

langstring

one of ja · en

methodstring

When omitted, returns the index of all topics.one of inhalers · hydrogen-water · injection · bath · topical

slugstring

Topic slug under the chosen method (e.g. "safety", "evidence", "clinical-applications").

get_lineageReturns the four-paper inhalation safety threshold lineage — the academic record supporting the 10% empirical ceiling for safe hydrogen inhalation and the non-recommendation of high-concentration devices. Use when the user asks for the academic basis of the safety guidance.1 params

Returns the four-paper inhalation safety threshold lineage — the academic record supporting the 10% empirical ceiling for safe hydrogen inhalation and the non-recommendation of high-concentration devices. Use when the user asks for the academic basis of the safety guidance.

Parameters* required

langstring

one of ja · en

get_accident_casesReturns Consumer Affairs Agency (Japan) accident records related to hydrogen inhalers and the editorial framing. Use when the user asks about real-world safety incidents.1 params

Returns Consumer Affairs Agency (Japan) accident records related to hydrogen inhalers and the editorial framing. Use when the user asks about real-world safety incidents.

Parameters* required

langstring

one of ja · en

Readme

@h2-papers/mcp-server

Model Context Protocol (MCP) server for H2 Papers — PubMed molecular hydrogen medical literature, structured in Japanese with per-paper safety notes inline.

Why

When an AI agent answers a question about hydrogen-related therapy, water, or inhalation, the response should carry both the paper evidence and the delivery-method-aware safety context. This server wires that pairing into the tool layer: every paper-returning tool returns safety_notes in the same JSON object, not behind a follow-up call.

Tools (6, implemented in task #11)

View the full README on GitHub

Details

Repository: github.com/h2-papers/h2-papers-mcp-server
Package: @h2-papers/mcp-server
Transport: STDIO, HTTP
Registry: MCP registry, active
Tools verified: Nov 6, 2026