exa vs memex-bookmarking-2nd-brain
exa is a plugin bundle for AI coding tools published by exa-labs. Marketplaces we read that list it: 5 (Claude Code: claude-plugins-official, Official MCP Registry, Docker MCP Catalog, Claude: knowledge-work-plugins, Community GitHub marketplaces). memex-bookmarking-2nd-brain is a plugin bundle for AI coding tools published by WorldBrain. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-15. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  exa |  memex-bookmarking-2nd-brain |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 3.4.1 Forks (GitHub): 403 Stars (GitHub): 5 127 Not marked · First seen |
Not listed |
| Official MCP Registry | Listed Version: 3.4.1 Forks (GitHub): 403 Stars (GitHub): 5 127 Not marked · First seen |
Not listed |
| Docker MCP Catalog | Listed Version: sha256:d88edd571d98 Forks (GitHub): 403 Pulls (Docker Hub): 36 400 Stars (Docker Hub): 7 Stars (GitHub): 5 127 Not marked · First seen |
Not listed |
| Claude: knowledge-work-plugins | Listed Version: 3.4.1 Forks (GitHub): 403 Stars (GitHub): 5 127 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 2026.8.7 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 | exa | memex-bookmarking-2nd-brain |
|---|---|---|
| Marketplaces that list it (differs) | 5 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 5 127 (better) | 0 (worse) |
| Pulls (Docker Hub) (differs) | 36 400 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 403 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server or your machine | Remote server (api.memex.garden/mcp) |
| Transport (differs) | Streamable HTTP, stdio | Streamable HTTP |
| Tools it declares (differs) | 2 | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | 1, secrets among them: 0 |
| Hooks it runs (differs) | Not published | 1 |
| Parts of the bundle (differs) | 3 | 4 |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/exa-labs/exa-mcp-server | github.com/worldbrain/memex-claude |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | not checked yet | Answered with HTTP 403 (2 days ago) |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
exa
Exa AI web search, deep research, and content extraction. Provides MCP tools and research skills for comprehensive web search, people discovery, company research, academic papers, and more.
memex-bookmarking-2nd-brain
This is the Claude plugin for Memex.Garden, a bookmarking second brain for humans and agents. You can save, transcribe, summarize and search anything you come across. Websites, Notes, Web Highlights, Youtube, X, Tiktok, Instagram, PDFs, Reddit or images." How it works: - You can instruct your agent to save any url and it will be indexed, videos transcribed, images analyzed in a powerful full-text and vector search. - You can query for saved content and get back structured data, readymade for your agent to process
How to run each
exa As a Claude Code plugin
/plugin install exa@claude-plugins-officialmemex-bookmarking-2nd-brain As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install memex-bookmarking-2nd-brain@claude-communityCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only memex-bookmarking-2nd-brain has a remote endpoint we check. How we check endpoints
Tools each declares
The marketplaces of memex-bookmarking-2nd-brain publish no list of tools, so we do not compare tools.
Settings each asks for
Only exa asks for
EXA_API_KEY (secret)
Only memex-bookmarking-2nd-brain asks for
MEMEX_REALTIME_STATE_DIR
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: exa · What it can do: memex-bookmarking-2nd-brain · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/blob/HEAD/.claude-plugin/marketplace.json. Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.