Comparison

obsidian-brain vs io.github.onetrueclaude-creator/mcp-curiosity-engine

obsidian-brain is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑15.

obsidian-brain is a plugin bundle for AI coding tools published by abhattacherjee. No marketplace we read lists it any more. io.github.onetrueclaude-creator/mcp-curiosity-engine is an MCP server published by onetrueclaude-creator. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-29. 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

Where each is published
Marketplace	obsidian-brain	io.github.onetrueclaude-creator/mcp-curiosity-engine
Community marketplace abhattacherjee/obsidian-brain	Removed on 2026-10-15 Version: 3.8.1 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen 2026-10-14	Not listed
Official MCP Registry	Not listed	Listed Version: 0.1.0 Downloads/month (PyPI): 54 Downloads/week (PyPI): 23 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen 2026-10-11

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

obsidian-brain vs io.github.onetrueclaude-creator/mcp-curiosity-engine
Fact	obsidian-brainno longer listed · 2026-10-15	io.github.onetrueclaude-creator/mcp-curiosity-engine
Marketplaces that list it (differs)	0	1
Stars (GitHub)	0	0
Forks (GitHub)	0	0
Last release	Not published	Not published
Where it runs (differs)	Installs as a plugin bundle	On your machine (mcp-curiosity-engine)
Transport (differs)	Not stated	stdio
Tools it declares	Not published	Not published
Environment variables it asks for (differs)	Not published	1, secrets among them: 1
Hooks it runs (differs)	4	Not published
Parts of the bundle (differs)	23	Not a bundle
Licence	Not stated	Not stated
Repository (differs)	github.com/abhattacherjee/obsidian-brain	github.com/onetrueclaude-creator/mcp-curiosity-engine
Changes in the last 7 days	0	0
First seen (differs)	2026-10-14	2026-10-11

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 obsidian-brain

Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.

vault-pkm

Personal knowledge management for Claude Code. Connect to your Obsidian vault with 20 MCP tools, semantic search, wikilink graph traversal, template-based note creation, link…

by AdrianV101 · Plugin bundle

Listed on: Claude Code: claude-plugins-community · Describes nearly the same job
oh-my-obsidian

Claude Code를 위한 영구적인 '두 번째 뇌(Second Brain)'입니다. oh-my-obsidian은 로컬 Obsidian Vault와 Claude Code를 직접 연결하여 AI 에이전트의 가장 큰 취약점인 '문맥 단절(Amnesia)'을 해결합니다. 과거의 아키텍처 의사결정 내역을 자동으로…

by hongdangmoo49 · Plugin bundle

Listed on: Claude Code: claude-plugins-community, Community GitHub marketplaces · Describes nearly the same job
obsidian-brain

Archive learnings from Claude Code sessions to Obsidian vault as Zettelkasten notes and use vault knowledge as conversational context

by minsoo.web · Plugin bundle

Listed on: Community GitHub marketplaces · Describes nearly the same job
obsidian

ntelligent vault assistant for Obsidian via Claude Code. Auto-context, vault intelligence, PKM workflows, and thinking commands.

by Sourabh-Garg-tech · Plugin bundle

Listed on: Claude Code: claude-plugins-community · Describes nearly the same job
open-second-brain

Plugin-first second brain for AI agents and humans (Obsidian-compatible Markdown vaults).

by Open Second Brain contributors · Plugin bundle

Listed on: Community GitHub marketplaces · Describes nearly the same job
shipwright-brain

Persistent memory for Claude Code. Markdown files, no database. Brain remembers ideas, decisions, features, and progress across sessions so Claude doesn't start from zero every…

by shipwright-ai · Plugin bundle

Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

Its card, with similar plugins by marketplace

What each says it does

obsidian-brain

In its own words, on Community GitHub marketplaces:

Persistent brain for Claude Code sessions using Obsidian.

io.github.onetrueclaude-creator/mcp-curiosity-engine

In its own words, on Official MCP Registry:

Surface the notes you forgot you wrote — DMN replay for markdown vaults.

How to run each

obsidian-brain

No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.

io.github.onetrueclaude-creator/mcp-curiosity-engine As a local MCP server: PyPI package

Claude Code

claude mcp add --env "CURIOSITY_ENGINE_LICENSE=<YOUR_CURIOSITY_ENGINE_LICENSE>" --transport stdio mcp-curiosity-engine -- uvx mcp-curiosity-engine

Requires: CURIOSITY_ENGINE_LICENSE (secret)

Commands built only from what the marketplaces declare; the full set for every client is on each card.

Tools each declares

Neither one's marketplaces publish a list of tools, so there is nothing to compare.

Settings each asks for

The marketplaces of obsidian-brain publish no settings it asks for, so we do not compare settings.

What it can do: obsidian-brain · What it can do: io.github.onetrueclaude-creator/mcp-curiosity-engine · Compare two other plugins

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 2026-10-29. We publish no contact details for plugin publishers.