Alephgrid

Name: Alephgrid
Author: alephgrid

by alephgridversion 0.1.0i★ –iRuns in the cloud

Registry namedev.alephgrid/alephgrid

Install

Overview

Description from the maker (original English)

Read-only MCP access to Alephgrid workbooks: schema cards, reads, SQL, saved queries, receipts.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Databases & datasets
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http alephgrid 'https://{alephgrid_host}/mcp' --header 'Authorization: Bearer {agent_token}'

Fill in the empty values before running it.

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "alephgrid": {
      "url": "https://{alephgrid_host}/mcp",
      "headers": {
        "Authorization": "Bearer {agent_token}"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "alephgrid": {
      "type": "http",
      "url": "https://{alephgrid_host}/mcp",
      "headers": {
        "Authorization": "Bearer {agent_token}"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret required HTTP header
Bearer token for an agent connection, created in Alephgrid under a space or workbook (shown once, prefixed agc_)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

The address needs your own values, so we cannot read the tool list for you.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

✓ Pass
Maker matches the repo
The registry name was verified against the domain alephgrid.dev (the registry checks domain ownership)
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
The address needs your own account values, so we cannot check it for you
– Not applicable
Sign-in with OAuth
The address needs your own account values, so we cannot check it for you
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Databases & datasetsi

More stars than 0% of the other 952 servers in this category
Published to the registry more recently than 88% of the other 952 servers in this category
Basic checks equal to or better than 100% of the other 952 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Alephgrid safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 5 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Supabase, MongoDB MCP Server, Elasticsearch MCP Server

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Supabase

by supabase

Supabase’s official server lets AI create tables, query data and review project settings in your Supabase database.

Computer or cloud★ 2,993Apache-2.0Updated today

Install

MongoDB MCP Server

by mongodb-js

MongoDB Model Context Protocol Server

Runs on your computer★ 1,157Apache-2.0Updated 2 days ago

Install

Elasticsearch MCP Server

by cr7258

MCP server for interacting with Elasticsearch

Runs on your computer★ 315Apache-2.0Updated 14 months ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

An open-source spreadsheet for data that doesn't fit in a spreadsheet.

Hundreds of millions of rows, real spreadsheet formulas, SQL when you want it.

Runs on your laptop or your own server. Your data never leaves it.

Open a CSV or Parquet file with hundreds of millions of rows, then scroll, sort, filter, edit and add calculated columns in your browser. Next to those big tables, build ordinary sheets with formatting, charts and Excel formulas such as XLOOKUP and SUMIFS, and point those formulas straight at the big tables. Everything runs on a DuckDB file on your machine. There are no seats, tiers or paywalls: export, sign-in, teams and every other feature are free.

alephgrid flights.parquet          # opens http://127.0.0.1:7878 with the file loaded

alephgrid --demo-rows 100000000 # or try it on 100M generated rows



Your own functions in a side panel: code, tests, docs and versions	SQL when you want it, docked under the grid (dark theme)

The hub: every workbook, its size and whether its compute is running

Status: pre-release. The first release (v0.1.0) is being prepared. Build from source or

with Docker today; published binaries and images come with the release. See

what is shipped and what is not.

Why Alephgrid

Big tables stay fast. Opening a workbook reads nothing into memory. The grid asks only for the rows on screen, so scrolling to row 900,000,000 is a range read. Sorts build a permutation, not a copy; calculated columns are computed only for the rows you look at.
A real spreadsheet next to them. Sheets use Excel syntax and an Excel-compatible engine (IronCalc), with formatting, merged cells, frozen panes, charts, colour rules, comments and XLSX import and export.
Spreadsheet formulas over big tables. =XLOOKUP(A2, customers[id], customers[region]) and =SUMIFS(orders[amount], orders[region], A2) in a sheet cell run as one query over the whole table, not one lookup per row. See table formulas.
No SQL required, SQL available. Filters, pivots, joins and charts work without writing SQL; the SQL workspace stays closed until you open it, and a server can turn it off.
Yours to run. One binary with the UI embedded, data in a plain directory, Apache-2.0. Teams get spaces, roles, single sign-on, audit, quotas and backups in the same binary.
Agents through MCP. Give an AI agent read access to a workbook's tables, sheets and saved queries over the Model Context Protocol, with a receipt for every result.

Features


Import	CSV/TSV (auto-detected), Parquet, JSON/JSONL, gzip as tables; XLSX as editable sheets. Drag and drop or CLI. Streamed, reviewed in a side pane with column types and samples
Tables	Virtual canvas grid for any number of rows; typed edits, insert and delete rows; add, rename and delete columns; calculated columns (`=[fare_usd] / [distance_mi]`); multi-column sort and filters over the whole table; header value filters with counts; saved views
Sheets	Excel formulas, cross-sheet references, named ranges, dynamic arrays, `LET` / `LAMBDA`; formula autocomplete and argument help; undo/redo
Editing	Keyboard first: arrows, Shift and Mod selection, F2, Mod+A (the filled block, then the sheet), copy, cut, paste with formulas translated, paste special (values, formulas, formats, transpose), fill down and right, and a fill handle that continues series (1, 2 → 3, 4; Week 1 → Week 2) or repeats patterns. See keyboard
Formatting and layout	Bold, italic, underline, strikethrough, sizes, colours, borders, alignment, wrap, number formats, merged cells; frozen rows and columns, sizes, hide and unhide, zoom 50–200%; kept through XLSX
Sheet data	Find and replace (one sheet or all), sort and filter a range, colour rules and scales, allowed-value lists, charts (column, bar, line, area, scatter, pie) previewed before they are saved, comments with replies
Analysis	Live sum, average and count of the selection; the Analyze pane for summaries, pivots, joins, charts and column profiles without SQL; deduplicate, split, trim and convert types with previews
SQL	Schema browser, autocomplete, `$parameters`, cancellable previews, saved and live queries with versions, tables from queries, complete exports; reads the workbook's own tables only
Functions	Define reusable functions as sheet formulas, SQL expressions or sandboxed Python; test them, publish versions, pin and roll back. See functions
Export	CSV, Parquet or JSON lines for any table or filtered view; XLSX for sheets, with a report of anything XLSX cannot hold
Collaboration	Several people on one workbook see each other's edits live; history and revision restore
Teams	Organizations, spaces, owner/editor/viewer roles (also from identity-provider groups), invitations, service tokens, password or OpenID Connect sign-in, quotas, audit log, backups and an administration screen. See teams
Compute	Each open workbook gets its own share of memory and threads, sleeps when idle and wakes when opened; larger sizes (`--profile`) for heavy workbooks. See compute
Agents (MCP)	Read-only agent connections per space or workbook over Streamable HTTP (`/mcp`) or stdio (`alephgrid mcp`): schema cards, catalog search, reads, read-only SQL, saved queries and analyses, content-hashed receipts, activity per connection

The full inventory, including what is partial or not planned, is in docs/SPREADSHEET_FEATURES.md.

Quick start

Install a release

From v0.1.0 (being prepared; see releasing):

npx alephgrid flights.parquet                         # npm, or: pnpm dlx / yarn dlx / bunx alephgrid

docker run -p 7878:7878 -v alephgrid-data:/data ghcr.io/alephgrid/alephgrid

or download alephgrid-VERSION-TARGET.tar.gz for Linux (x86_64, arm64) or macOS (Apple silicon, Intel) from GitHub Releases and check it against SHA256SUMS. On Windows, use Docker or WSL.

From source

Requires Rust 1.88+ and Node 20+.

git clone https://github.com/alephgrid/alephgrid && cd alephgrid

(cd web && npm install && npm run build) # build the UI (embedded into the binary) cargo build --release ./target/release/alephgrid --demo-rows 10000000

The first build compiles DuckDB from source, which takes several minutes.

Docker (for a team)

docker compose up -d

docker compose logs alephgrid | grep "setup code" # the one-time code that creates the admin open http://localhost:7878/setup

With --auth accounts, people sign in with a password or single sign-on (OpenID Connect), and spaces grant them roles; see docs/TEAMS.md. Without it (the default on your own machine), there is no sign-in and the server only listens on 127.0.0.1. Running it for others, backups, upgrades and restores are covered in docs/OPERATIONS.md.

Options

Flag	Env	Default
`--data-dir`	`ALEPHGRID_DATA_DIR`	`./alephgrid-data`
`--host` / `--port`	`ALEPHGRID_HOST` / `ALEPHGRID_PORT`	`127.0.0.1` / `7878`
`--auth local\	accounts`	`ALEPHGRID_AUTH`	`local`: no sign-in, loopback only
`--public-url`	`ALEPHGRID_PUBLIC_URL`	how people reach the server (needed for SSO; https makes cookies Secure)
`--oidc-issuer`, `--oidc-client-id`	`ALEPHGRID_OIDC_*` (secret: `ALEPHGRID_OIDC_CLIENT_SECRET`)	no single sign-on
`--session-hours`	`ALEPHGRID_SESSION_HOURS`	12
`--space-storage`, `--space-workbooks`, `--space-jobs`, `--space-open-workbooks`	`ALEPHGRID_SPACE_*`	no limits (admins can set them per space)
`--memory-limit`	`ALEPHGRID_MEMORY_LIMIT`	DuckDB default (80% of RAM, spills to disk)
`--threads`	`ALEPHGRID_THREADS`	all cores
`--disk-reserve`	`ALEPHGRID_DISK_RESERVE`	32MiB kept back so the server can still restart when the disk fills (operations)
`--idle-timeout`		seconds without activity before a workbook's compute sleeps
`--profile name=MEM:THREADS[:dedicated]`		extra compute sizes admins can grant to spaces
`--disable-sql`	`ALEPHGRID_DISABLE_SQL`	SQL allowed; when set, every operation that runs user-written SQL is refused
`--demo-rows N`		generate a demo workbook
`alephgrid mcp --url URL --token agc_…`	`ALEPHGRID_URL`, `ALEPHGRID_AGENT_TOKEN`	connect an MCP client over stdio to a running server (docs/MCP.md)

alephgrid --help lists every option.

Formulas

In sheets, formulas use Excel syntax: =SUM(B2:B9), =XLOOKUP(...), =Budget!B4*2. A sheet formula can read a whole table by name:

=SUMIFS(orders[amount], orders[region], $A2, orders[month], $B$1)

=XLOOKUP(A2, customers[id], customers[region], "none")

Fill or drag it like any formula; each copy reads its own row. The formula catalog lists supported functions with tested examples, and known gaps are documented with reproducible inputs.

In tables, calculated columns refer to columns by name, and the leading = is optional:

=[fare_usd] / [distance_mi]

=CASE WHEN [dep_delay_min] > 15 THEN 'late' ELSE 'on time' END =[origin] || '→' || [dest]

Typical flow: summarise 100M rows with Analyze or SQL, choose *Open in sheet*, then model on top of the result.

How it is built

DuckDB underneath. Every workbook is one DuckDB file: columnar, compressed and parallel across cores. Imports use DuckDB's own CSV, Parquet and JSON readers.
IronCalc for sheets, stored in the same workbook file.
Rust server (axum, HTTP and WebSocket) with the UI embedded; TypeScript client with a canvas grid, no framework. Wire types are generated from Rust, and a test fails when they drift.

See docs/ARCHITECTURE.md.

Measured (20M-row table, 9 columns, debug build, 8-core / 8 GB laptop)

Operation	Time
Reopen the workbook after a restart

Only the beginning is shown; read the rest in the repo

Alephgrid

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Databases & datasetsi

Common questions

Alternatives

Supabase

MongoDB MCP Server

Elasticsearch MCP Server

README from the maker

Why Alephgrid

Features

Quick start

Install a release

From source

Docker (for a team)

Options

Formulas

How it is built

Measured (20M-row table, 9 columns, debug build, 8-core / 8 GB laptop)