Alto 1.0.0

Alto builds an interactive, filterable timeline out of material you already have — a course, a novel, a research project. It never invents content: it organises what you give it and nothing else.

Install

Download the file for your computer, then in Claude Desktop go to Settings → Extensions → Advanced settings → Install Extension… and choose it. Restart Claude Desktop and Alto appears under Extensions.

Download	For
Alto-macos-arm64.mcpb	macOS, Apple Silicon (M1 and later)
Alto-macos-x64.mcpb	macOS, Intel
Alto-windows-x64.mcpb	Windows, 64-bit

Nothing else to install — each bundle carries its own Python, which is why they are around 50MB. Claude Desktop ships Node but not Python, and stock macOS still has 3.9.

Prefer the command line? uvx alto-connector runs the same server for any MCP client.

What you get

Cards on coloured act bands, entity chips, routed connection lines, detail pages using headings you choose, highlights and notes, a mobile layout, and a single self-contained file you can send to anyone — no server, no account, works offline forever.

Publishing shareable web links is optional and uses your own free Firebase project. Alto never ships one of its own; leave it unconfigured and every timeline simply stays local.

Checksums

3362cad9644f3c8ef038d5c52ead4a7b933e13baa718c331a06712bf9a4f777b  Alto-macos-arm64.mcpb
eb93d5730170baa4af47c445fe3e3e55bad10875d9e1a6e72a72049916bab36b  Alto-macos-x64.mcpb
6e41e9057b4828682a8e6d8f6a115e23a43edf6b73a29459028b3a8ef390f8a7  Alto-windows-x64.mcpb

Known limits

• Windows is untested. It is cross-built and its manifest, wheel architecture and interpreter are verified, but nobody has yet run it on Windows.
• Authoring needs Claude Desktop. Reading a shared timeline needs nothing at all.

Apache-2.0. Timelines you build with Alto are your own work and are not covered by that licence.