Kagi Search vs io.github.yBookoff/thebrain
Kagi Search is an MCP server published by kagisearch. Marketplaces we read that list it: 1 (Docker MCP Catalog). io.github.yBookoff/thebrain is an MCP server published by yBookoff. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-13. 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 |  Kagi Search |  io.github.yBookoff/thebrain |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:c26439346cd6 Forks (GitHub): 49 Pulls (Docker Hub): 19 843 Stars (Docker Hub): 1 Stars (GitHub): 541 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.2.0 Downloads/month (npm): 714 Downloads/week (npm): 74 Forks (GitHub): 1 Stars (GitHub): 8 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 | Kagi Search | io.github.yBookoff/thebrain |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 541 (better) | 8 (worse) |
| Pulls (Docker Hub) (differs) | 19 843 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 49 (better) | 1 (worse) |
| Last release (differs) | Not published | 2026-10-13 |
| Where it runs (differs) | On your machine (mcp/kagisearch) | On your machine (thebrain-mcp-server) |
| Transport | stdio | stdio |
| Tools it declares (differs) | 2 | Not published |
| Environment variables it asks for (differs) | 2, secrets among them: 1 | 7, secrets among them: 1 |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/kagisearch/kagimcp | github.com/ybookoff/thebrain-mcp |
| Changes in the last 7 days (differs) | 0 | 1 |
| First seen | 2026-10-11 | 2026-10-11 |
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
Kagi Search
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
io.github.yBookoff/thebrain
MCP server for TheBrain 15: search by meaning, graph traversal and batch writes over the local API
How to run each
Kagi Search As a local MCP server: Docker image
claude mcp add --env "KAGI_API_KEY=<YOUR_KAGI_API_KEY>" --transport stdio kagisearch -- docker run -i --rm -e KAGI_API_KEY mcp/kagisearchRequires: KAGI_API_KEY (secret)
io.github.yBookoff/thebrain As a local MCP server: npm package
claude mcp add --env "THEBRAIN_API_KEY=<YOUR_THEBRAIN_API_KEY>" --transport stdio thebrain -- npx -y thebrain-mcp-serverRequires: THEBRAIN_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of io.github.yBookoff/thebrain publish no list of tools, so we do not compare tools.
Settings each asks for
Only Kagi Search asks for
KAGI_API_KEY (secret)KAGI_SUMMARIZER_ENGINE
Only io.github.yBookoff/thebrain asks for
THEBRAIN_ALLOW_DESTRUCTIVETHEBRAIN_API_KEY (secret)THEBRAIN_BASE_URLTHEBRAIN_DATA_DIRTHEBRAIN_EMBEDDING_DTYPETHEBRAIN_EMBEDDING_MODELTHEBRAIN_TIMEOUT_MS
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Kagi Search · What it can do: io.github.yBookoff/thebrain · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. 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.