vvuq4ai vs Stipple — Reference Verification
Stipple — Reference Verification is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑29.
vvuq4ai is a plugin bundle for AI coding tools published by dirkenglund. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). Stipple — Reference Verification is an MCP server published by stipple.sh. No marketplace we read lists it any more. As of our marketplace pass on 2026-11-08. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |  vvuq4ai | |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.3.0 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Removed on 2026-10-29 Version: 0.1.5 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | vvuq4ai | Stipple — Reference Verificationno longer listed · |
|---|---|---|
| Marketplaces that list it (differs) | 1 | 0 |
| Stars (GitHub) | 0 | 0 |
| Forks (GitHub) | 0 | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (vvuq.dirkenglund.org/mcp) | Remote server (www.stipple.sh/mcp-verify) |
| Transport (differs) | SSE | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/dirkenglund/vvuq4ai-plugin | github.com/sketchjar/stipple-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen (differs) | 2026-10-12 | 2026-10-11 |
| Endpoint at the last check (differs) | Status out of date: last check 37 h ago returned HTTP 401 | no remote endpoint we check |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of Stipple — Reference Verification
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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Evidence-first entity and knowledge graph MCP server for AI agents to verify claims.
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Real-time fact-check, citation verification, and source-freshness for AI agents.
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Grounding/hallucination guard: verify a claim against evidence (Supported/Refuted/NEE).
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Checks whether each cited source supports the claim it backs. Blinded human-first, local-first.
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Verify claims with verdict, confidence & cited sources; batch verify, source checks, daily brief.
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WebCite MCP Server - verify AI claims against authoritative sources, bind quotes back to their source passage, and extract document figures deterministically. Works with any…
What each says it does
vvuq4ai
Verify AI-generated STEM claims against curated knowledge bases, IEEE standards, and mathematical checks. VVUQ4AI runs physics constants, dimensional analysis, and standards compliance checks (IEEE 802.3, NSF Biosketch) on claims Claude generates or encounters, returning structured verdicts with confidence scores.
Stipple — Reference Verification
Fact-check citations: resolve, match, support claims. Arithmetic rechecked. Free to start.
How to run each
vvuq4ai As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install vvuq4ai@claude-communityStipple — Reference Verification
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only vvuq4ai has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: vvuq4ai · What it can do: Stipple — Reference Verification · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.