seekstone

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    <img src="brand/seekstone-wordmark-light.svg" width="320" alt="Seekstone" />
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<p align="center"><strong>The Obsidian MCP server that needs no plugin, no running Obsidian app — and doesn't blow your context window.</strong></p>
<p align="center"><em>Filesystem-direct · single-digit-ms keyword search · ~26 ms semantic · ~2 KB payloads · 21 tools · macOS · Linux · Windows</em></p>

<p align="center"><a href="https://seekstone.dev"><strong>seekstone.dev →</strong></a></p>

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---

|  | **Seekstone** | [obsidian-mcp-server](https://github.com/cyanheads/obsidian-mcp-server) (#1 by downloads) | REST-proxy servers |
|---|---|---|---|
| Local REST API plugin | **Not needed** | Required | Required |
| Obsidian app running | **Not needed — works with Obsidian closed** | Required | Required |
| Search payload @ 10k notes | **2.0 KB** | 47 KB | up to **95 MB** |
| Warm search latency @ 10k notes | **5.2 ms** | 732 ms (~141× slower) | up to 1,550 ms |
| Structured frontmatter queries | **Built-in (`query_notes`) — property/date/size predicates, answers in a few hundred bytes** | JSONLogic via REST | Varies |

<sup>Same queries, same committed vaults, 20 runs each, one machine. In-process adapters were re-run on the fixture-v2 vault in September 2026; the REST-proxy rows (`rest`, obsidian-mcp-server, mcp-obsidian) plus obsidian-mcp and obsidian-mcp-pro are June 2026 captures on fixture v1 — per-row provenance in [`benchmarks.json`](benchmarks.json), the generated source of truth every number here is checked against in CI — [full results across eight servers and three vault sizes below](#why-seekstone-the-numbers), fully reproducible from the [harness](packages/harness).</sup>

---

<p align="center">
  <img src="docs/demo.gif" alt="Seekstone demo — Claude searching an Obsidian vault and querying frontmatter, with tool-call waits time-lapsed" width="700" />
</p>

---

## What is Seekstone?

**Seekstone is an Obsidian MCP server** — it gives Claude (and any [Model Context Protocol](https://modelcontextprotocol.io) client) direct read and write access to your Obsidian vault. No Obsidian app needs to be open, no plugins are required, and nothing leaves your machine.

It reads your vault **directly from disk** rather than routing through the Obsidian Local REST API plugin, and holds a warm full-text index in-process. The practical difference is twofold:

- **Speed.** Keyword searches return in **single-digit milliseconds** warm and semantic searches in **~26 ms** — up to **~514× faster** than every other Obsidian MCP server we benchmarked, because there's no subprocess to spawn and no HTTP round-trip per query.
- **Context.** A broad search that returns **tens of megabytes** and millions of tokens via a REST-proxy server returns **~2 KB** via Seekstone — up to a **~47,000× reduction** that only widens as your vault grows.

Search comes in three modes: ranked **full-text search** (fuzzy and prefix matching), optional **local semantic search** (meaning-based, via a small on-device embedding model — opt-in, offline at runtime after a one-time ~30 MB model download), and **structured metadata queries** — `query_notes` filters by frontmatter properties (`status`, `due`, `type`, …), tags, folder, modified time, and size, answering questions like *"which draft notes changed this week?"* in a few hundred bytes instead of a search-and-read loop.

Claude can search and read your entire note library, in milliseconds, without burning most of its context window on a single tool call.

Published on npm as [`seekstone`](https://www.npmjs.com/package/seekstone) — install with `npx -y seekstone`. (Previously also published as `obsidian-mcp-seekstone`; that alias is deprecated but existing installs keep working.)

---

## Why Seekstone? The numbers.

Most Obsidian MCP servers return **full note content for every search hit**. On a broad query that's megabytes of text your LLM has to process — most of it irrelevant, all of it burning context window.

Seekstone returns short ranked excerpts instead (~120 characters by default, tunable per query). We benchmarked Seekstone against 7 other Obsidian MCP servers — 8 servers total — across **three vault sizes — 1,000 / 5,000 / 10,000 notes** (20 runs each). Every number below is [fully reproducible](packages/harness): the vaults are committed to this repo (generated from the public-domain 1911 Encyclopædia Britannica), so you can clone it and run the exact same benchmark yourself.

The point of testing three sizes is that **this is where the architectures diverge** — a real vault only grows.

**Search payload — bytes returned per query (context tax; lower is better)**

| Server | Architecture | 1k notes | 5k notes | 10k notes |
|---|---|---:|---:|---:|
| 🥇 **Seekstone** | in-process index | **1.6 KB** | **1.8 KB** | **2.0 KB** |
| [mcpvault](https://github.com/bitbonsai/mcpvault) | fs-direct subprocess | 1.7 KB | 1.9 KB | 2.2 KB |
| [obsidian-mcp-rs](https://www.npmjs.com/package/obsidian-mcp-rs) | fs-direct, per-query scan | 5.4 KB | 5.8 KB | 6.2 KB |
| [obsidian-tc](https://www.npmjs.com/package/obsidian-tc) | SQLite platform | 4.6 KB | 6.8 KB | 7.2 KB |
| [obsidian-mcp-server](https://github.com/cyanheads/obsidian-mcp-server) | REST API | 55 KB | 47 KB | 47 KB |
| [obsidian-mcp-pro](https://github.com/rps321321/obsidian-mcp-pro) | fs-direct subprocess | 25 KB | 84 KB | 114 KB |
| [obsidian-mcp](https://github.com/StevenStavrakis/obsidian-mcp) | fs-direct subprocess | 18 KB | 105 KB | 201 KB |
| [mcp-obsidian](https://github.com/MarkusPfundstein/mcp-obsidian) | REST API | 9.8 MB | 45 MB | **95 MB** |

Seekstone stays **flat (~2 KB)** no matter how big your vault gets, because it always returns ranked excerpts — and it's now the **smallest payload of every server tested**, edging out mcpvault at all three sizes. The REST-proxy servers return full note content for every match, so they grow with the vault — `mcp-obsidian` hits **95 MB** at 10k notes, and a single broad query (`the capital of`) averaged **370.9 MB / 97.8 million