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Vahtian

Official registry Security

Freeze a corpus, check it for drift, keep a hash-chained audit ledger. Local-first, stdlib-only.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

PYPI package vahtian
Claude Code 
claude mcp add vahtian -- uvx vahtian==0.2.0
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "vahtian": {
            "command": "uvx",
            "args": [
                "vahtian==0.2.0"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. vahtian
  2. The product ladder
  3. Brand & social tooling
  4. MethodVahti package

vahtian

Company site for Vahtian — research citation integrity.

Vahtian checks whether each manuscript claim is supported by the evidence cited for it — through a blinded human → AI → adjudication workflow with a decision-gated, undoable write and a hash-chained audit trail.

Vahtian does not decide scientific truth. It records whether a cited source supports a specific claim: who rated it, what the AI advised, how disagreements were adjudicated, and what was finally written.

Human-first. AI-second. Auditable. Free local tools for researchers; infrastructure for journals, guideline groups, and research organizations.

The product ladder

Start — check the claims in your own manuscript

Prepare — get the study and its evidence right before analysis

  • StudyVahti — plan a defensible study before data collection (free · live): /studyvahti
  • MethodVahti — justify your sample size → COREQ/SRQR methods PDF (free beta for individuals, project licence for institutions): /methodvahti
  • DictVahti — clean the REDCap data dictionary before analysis (free · live): /dictvahti
  • MatchVahti-Lite — capture citation-worthy evidence from abstracts (free · live): /matchvahti-lite

Scale — systematic-review infrastructure

  • ReviewVahti — inter-rater reliability for screening (Cohen's κ / Krippendorff's α) (live): /reviewvahti
  • ExtractVahti — DTA data extraction + risk-of-bias (QUADAS-2/-C, PROBAST-AI) → tidy CSV + RoB traffic-light SVG for R; multi-extractor reconcile (κ / α); sealed agent aid (early access): /extractvahti
  • GuidelineVahti — panel consensus, RAND/UCLA + GRADE (early access): /guidelinevahti
  • AtlasVahti — de-identified validation-pattern analytics (roadmap)

Static pages (one index.html per product, plus 404.html and sitemap.xml), deployed via Cloudflare to vahtian.com. No trackers, no external dependencies.

vahti (Finnish) = sentinel / guard — the watch over what gets cited.

Brand & social tooling

  • brand/STYLE.md — the canonical brand spec; brand/PHILOSOPHY.md — the mark system.
  • brand/cards/ — 1200×630 Open Graph cards, one per page. Regenerate with npm i @resvg/resvg-js && node brand/cards/generate.mjs.
  • Screenshot-led product covers are generated from their real interface previews with node brand/cards/generate-product-covers.mjs (uses the bundled preview browser).
  • brand/carousel/ — self-contained LinkedIn carousel builder (noindex, zero external requests). Preset decks per product, theme & format switching, post-caption drafts, deck save/load as JSON, export as PDF (LinkedIn document post) or per-slide PNGs.

MethodVahti package

methodvahti/ is a self-contained Python package (Apache-2.0) for qualitative heterogeneity scoring + a COREQ/SRQR methods-report PDF. See methodvahti/README.md. Tests: cd methodvahti && python -m pytest tests/ -v.

Frequently asked questions

What is Vahtian?

Freeze a corpus, check it for drift, keep a hash-chained audit ledger. Local-first, stdlib-only.

How do I install Vahtian?

It runs on your machine. In Claude Code: claude mcp add vahtian -- uvx vahtian==0.2.0. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Vahtian need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Vahtian open source?

Yes. Its code is on GitHub under the Apache-2.0 license.

Who maintains Vahtian?

It is published by heidihelena. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.