Works with Claude Desktop, Cursor, Windsurf — or its own agent

Transparent AI for your Markdown notes

A native macOS Markdown editor that reads your notes and shows you every file it cites. Use the agent you already pay for — or the one built in.

Download for Mac See how it works

macOS Sonoma+ · one-time payment · BYO API key

Eyrie — research-notes.md
Eyrie editor showing the sidebar, an open Markdown document, and the right-side chat panel with citation chips

Plugs into the AI tools you already use

Claude Desktop Cursor Windsurf Claude Code Cline Continue.dev

How it works

Three keystrokes. Your whole vault.

No menus to dig through. No black-box answers. Every AI moment is intentional.

01 · Selection

⌘E

Ask inline

Select text, press ⌘E. A popover slides up anchored on your selection. Rewrite, summarize, translate, restructure. Click apply, or undo cleanly.

02 · Document

⌘⇧A

Chat with citations

Open the chat panel. Eyrie searches your vault — keyword + semantic + HyDE — and answers with chips for every file it read. Click a chip to verify.

03 · Any agent

MCP

Bring your own

One click installs Eyrie into Claude Desktop, Cursor, or Windsurf. Your agent reads your notes and proposes edits. Every change is a diff you approve.

Built for

People who live in their own notes.

Researchers

Cite every claim.

Ask Eyrie about your literature notes. Every answer ships with chips you can click to verify against your source. No hallucinated authority, no invented citations.

"Find everything I've written that contradicts this new paper's claim about MSR fuel cycles."

Eyrie

The thorium fuel cycle in molten salt reactors uses Th-232 as a fertile breeder...

📄 thorium-cycle.md📄 msr-design.md📄 vantar-energy.md

Claude Desktop · via MCP

I'll use search_notes to find your last quarter's retainer notes…

→ Calling Eyrie's search_notes tool

→ 12 files retrieved

Agencies + consultants

Plug into your existing stack.

Already in Claude Desktop? Already pay for Cursor? Connect them to your client vault. Same agent you trust, same shortcuts, no second subscription.

"Pull last quarter's retainer notes. Draft this month's status update in the same voice."

Writers + creators

Capture, then ship.

Clip articles by URL. Cross-reference notes from months ago. Ask the agent to draft an outline from your reading, then refine inline with ⌘E.

"Take my reading notes from October and turn them into a 600-word draft."

User

Save this article and pull the key bullets:
https://example.com/thorium-msr

Eyrie

Saved as Thorium-MSR.md · key points:

→ fetch_url(...)

→ create_note(...)

Features

A real Markdown editor. With an AI that explains itself.

Every AI surface is summoned, never imposed. Every edit is gated. Every retrieval is cited.

Native, not Electron

SwiftUI + AppKit. Launches instantly, sips memory, feels right at home on macOS.

Hybrid + semantic search

Local NLEmbedding vectors fuse with BM25 scoring. HyDE rewrites queries before retrieval.

Plain .md files. Yours.

No proprietary blocks, no cloud lock-in. Your vault is a folder of Markdown on disk.

Transparent agent edits

Every agent-proposed change appears as a diff. ⌘↵ accepts, ⌘⌫ rejects. Nothing auto-applies.

Sidebar, outline, tags

Bookmarked folders, document outline (⌘⇧O), unlinked mentions, tag browser. Polish you'd expect.

URL clipping by chat

Paste a link in chat. Eyrie fetches it via Jina Reader, strips noise, proposes saving it.

Why Eyrie

The Markdown app for people tired of subscriptions.

Most AI-notes apps lock your data into their cloud and your wallet into a monthly fee. Eyrie does neither.

Eyrie
Notion AI
Obsidian
Bear / iA Writer
Plain .md files on disk
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AI built in (not a plugin)
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via plugins
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Cites every file the AI reads
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Works with Claude Desktop / Cursor
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One-time payment
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$8–20/mo
$5/mo sync
$15/yr+
Runs entirely on your Mac
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Pricing

Pay once. Use forever.

Three ways to buy. No subscriptions. No seat tiers. No AI-credit metering.

Setapp

$10/mo via Setapp

Get Eyrie plus 250+ other Mac apps in one subscription.

  • Full Eyrie, no feature limits
  • 250+ other Mac apps included
  • BYO API key (still your data)
  • Cancel anytime
Open on Setapp

Direct

$79one-time

Lifetime license. Free updates within v1.x.

  • Lifetime license, future v1 updates
  • BYO API key or external agent
  • All MCP integrations
  • Email support
Buy + Download

AppSumo · launch deal

$59lifetime

Launch promotion. Limited time.

  • Same Eyrie, same features
  • Lifetime, no recurring fees
  • 60-day refund
  • BYO agent → $0 in API forever
See on AppSumo

All tiers: same product. Bring Claude Desktop free if you already pay for it.

FAQ

Common questions.

Do I need to pay for an Anthropic API key?
No — that's the whole point of "bring your own agent." If you already pay for Claude Desktop, Cursor, or Windsurf, one click connects them to Eyrie. They handle the AI calls; Eyrie handles your notes. You only need an API key if you want to use Eyrie's built-in chat panel without an external agent.
What does "transparent AI" actually mean?
Every time the agent answers by reading your notes, the response includes citation chips — small clickable tags showing which files were read. Click a chip and the note opens. You always know what the AI saw.
What about Windows or Linux?
Mac-only by design. The whole point is being native — SwiftUI, AppKit, system shortcuts, sandbox, QuickLook extension. Cross-platform tools exist; Eyrie is the one that's truly at home on macOS.
Will my notes ever leave my Mac?
Only if you send them to an LLM yourself. Search and embeddings run locally via Apple's NaturalLanguage framework. URLs you ask Eyrie to clip are fetched via Jina Reader's public proxy. No telemetry, no analytics, no remote sync.
How is this different from Obsidian + plugins?
Obsidian is great. But plugin sprawl, theme drift, and "another app to set up" gets tedious. Eyrie ships a focused stack out of the box: hybrid + semantic search, ⌘E inline commands, chat with citations, MCP integration. Nothing to configure.
Can I trust an "AI editor" with my files?
Every file edit — from any agent — is a proposal. You see it as a diff and accept (⌘↵) or reject (⌘⌫). Nothing ever auto-writes. The architecture exists precisely because we don't trust agents either.
What if I get stuck?
Open Help → Reindex Embeddings (resets search). Help → Export Diagnostic Log for support. Email support included with direct + Setapp + AppSumo tiers.

The AI Markdown editor you'll actually own.

Free trial via Setapp. Lifetime deal on AppSumo. Direct download to test it yourself.

Download Eyrie for Mac