Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
One place for your projects, decisions and money, read and written by every agent you use.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
You need
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
https://app.brain.dog/mcpRun this in your terminal
claude mcp add --transport http braindog https://app.brain.dog/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"braindog": {
"url": "https://app.brain.dog/mcp"
}
}
}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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"braindog": {
"type": "http",
"url": "https://app.brain.dog/mcp"
}
}
}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.
ChatGPT connects only to servers on the internet:
https://app.brain.dog/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
The server asks you to sign in before it lists its tools.
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
The registry name was verified against the domain brain.dog (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 487 ms (HTTP 401)
Declares OAuth sign-in, so your AI app can take you to log in
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 of 3 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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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.
The GitHub repo last changed –, and the latest version (0.1.0) reached the registry yesterday.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, EmbeddedCI BenchPod
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
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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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.
One place for your projects, decisions and money. Every agent reads it before it starts and writes down what it did. Money, keys and deletes wait for your yes.
BrainDog is open source. Use it hosted at brain.dog, or run it on your own machine.
Website · Docs · Connect your agents · Run it yourself · Plugins
Today on the sample record. Every name and figure in it is made up.
/ or ⌘J (Ctrl J on Windows) and ask BrainDog in plain words. It answers from your own numbers, and a change it makes comes with an undo.It works in any browser. The iPhone app is in testing on TestFlight, and a Mac app is built from the same project. Neither is in the App Store yet.
By address. Any client that takes an MCP server address can use this one:
https://app.brain.dog/mcp
In Claude that is Settings, Connectors, Add custom connector. The first time, the client opens BrainDog in your browser. Pick the record and what the agent may do, then press Allow.
With the command line. For Claude Code and other agents on your machine. It needs Node 24.13 or later.
curl -fsSL https://brain.dog/cli/install.sh | sh # macOS and Linux
irm https://brain.dog/cli/install.ps1 | iex # Windows, in PowerShell braindog setup https://app.brain.dog/
setup signs the machine in (you approve six digits in the app), adds the Claude Code hooks, registers the MCP server and places the Agent Skill. apps/cli/README.md has the rest, and brain.dog/docs/agents/connect covers every client.
As a Claude Code plugin. This adds the MCP server, the session hooks and the skill in one step:
/plugin marketplace add actuallyhoss/BrainDog
/plugin install braindog@braindog
Put a file on a project, a task or any row.
From the command line:
braindog attach brief.pdf dashboard.html --to "Fix the login"
braindog attach --list --to "Fix the login"
Projects, Work, People and Agents are built in. Everything else is a plugin, installed from the app's Plugins page: Money and its parts (investments, property, insurance, debts, goals, trips, zakat), Stripe, Mercury, Gmail, Calendar, Sentry, standups, project briefs and more. A starter is a set of plugins and example rows for one kind of work, such as a photographer, a landlord or a retainer business.
Where they come from.
What they can do. Lists, pages, figures and rules. Tools your agents can call, commands, and actions on a row. Views they draw themselves. Scripts that notify you, ask a model or keep their own data. You see each of these before you install, and a plugin gets only what you approved. Scripts run in a sandbox and reach only the hosts the file names.
If one goes wrong. BrainDog can switch off a bad version of a store plugin wherever it is installed, and tells you why. Its rows stay.
Make one. A plugin is one readable file, so you can read and diff it before it is applied. The command line still calls it addon.
braindog addon new plant-care # a folder with the file, a test and a README
braindog addon dev plant-care # a scratch BrainDog that installs each save braindog addon check plant-care braindog addon publish plant-care --github # or --kennel, to send it to the store for review
The bundled ones live in packs/ (the folder keeps its old name), and packs/README.md shows how to write one.
Hosted, at [app.brain.dog](https://app.brain.dog). Each record is its own database on Cloudflare. Keys are sealed, and a sealed copy is made every night. Sign-up is by invitation for now: ask for one at brain.dog.
Run it yourself. Free. One container, one volume, no account with us.
git clone https://github.com/actuallyhoss/BrainDog braindog
cd braindog cp selfhost.env.example .env # set BRAINDOG_OWNER (your email) and BRAINDOG_SERVER_KEY (the server key) docker compose up -d --build docker compose logs braindog # once started, it ends with the address docker compose exec braindog cat /data/claim-link # a one-time link: open it and add a passkey
Without Docker you need Node 24.13 or later and pnpm. This serves http://localhost:8080 to your own machine, where nobody signs in:
pnpm install
pnpm --filter @braindog/web build export BRAINDOG_DATA=$HOME/braindog-data node apps/selfhost/src/main.ts init --owner node apps/selfhost/src/main.ts
Mail, a model for Slash and a public address are optional and off until you set them. apps/selfhost/README.md covers connecting agents, backups, restores and upgrades. docs/49-SPEC-SELFHOST.md lists every setting the server reads.
TypeScript throughout, on Node 24, with no build step for most packages.
packages/kernel is the write path: one way in, an append-only ledger, types, filters, figures and rules.packages/record puts the kernel, the declarations and plugins together into one record over SQLite.packages/mcp serves the record to agents.packages/script is the sandbox plugin scripts run in.packages/render is the block dialect and its renderers, published on its own as braindog-render.apps/web is the app, in SvelteKit. Both hosts serve the same build.apps/worker is the hosted version on Cloudflare Workers: one Durable Object, with its own SQLite, per record. It also runs the plugin store.apps/selfhost is the same record on one Node process over node:sqlite, and the container.apps/cli is the braindog command line, and apps/site is brain.dog.apps/apple is the iPhone and Mac app. apps/desktop is the older desktop shell, kept for Windows and Linux.tools/gates holds the source checks every change passes.The design is written down first, in docs/. docs/00-README.md is the index, and docs/01-ARCHITECTURE.md is the place to start.
docs/: the numbered design and specification documents.Please don't open a public issue for a vulnerability. SECURITY.md says how to report one privately. docs/12-SECURITY.md is the security model in full.
Issues and pull requests are welcome. Read CONTRIBUTING.md first. It covers the build, the tests, the gates and the house style, and a pull request that skips it is usually sent back. Everyone here follows the code of conduct.
BrainDog is open source under the Apache License 2.0 (LICENSE). The exception is packages/render, under the MIT License (packages/render/LICENSE), so the block dialect can be embedded anywhere. LICENSING.md explains the split.
The software is provided as is, without warranty of any kind, express or implied. See the licence texts for the full terms.