Spec Driven Development
by formulahendry
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer★ 440MITUpdated 14 months ago
Install
Keyfold
Overview
Description from the maker (original English)
Use API keys from your Keyfold vault in commands and .env files. No tool returns a secret value.
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 on your computer
- Transport: stdio
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on your computer with your user’s permissions (files, network, apps).
- The registry lists no key to fill in.
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Download the maker’s .mcpb file
The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.
Run this in your terminal
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.
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 one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.
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.
What it can do
Runs on your computer; the tool list appears in your AI app after you install it.
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 6, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account codewithkolin, which owns the repo
- … 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
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Compared with others in Otheri
- More stars than 0% of the other 32417 servers in this category
- Published to the registry more recently than 69% of the other 32417 servers in this category
- Basic checks equal to or better than 100% of the other 32417 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 Keyfold 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?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed –, and the latest version (1.0.1) reached the registry 17 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need MCPB on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, FOGA node
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
Remote Desktop Commander
by desktop-commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud★ 211Updated yesterday
Install
FOGA node
by garyyang-finchip
A Finch OG Agent cell as an MCP server: read the world, dry-run and take ERC-8414 tenders by policy.
Computer or cloudUpdated today
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.
Keyfold core
The open-source parts of Keyfold, an offline-first vault for developers: API keys organised by project and environment, plus passwords, in one encrypted file. No account, no cloud, no telemetry.
The Keyfold app for Mac is built on these crates (Windows is coming through the Microsoft Store). Get it at keyfold.app/download; signed builds are also on the Releases page.
What is here
| Crate | What it does |
|---|---|
crates/keyfold-core | Argon2id key derivation, XChaCha20-Poly1305 envelope encryption, the tamper-evident vault format, rolling backups, the Recovery Kit, .env parsing, key detection patterns, 2FA codes (RFC 6238) and offline Ed25519 licence verification |
crates/keyfold-agent | The JSON-line protocol between the keyfold CLI and the running app, over an owner-only local socket |
crates/keyfold-cli | The keyfold command line and the MCP server for Cursor and Claude Code. No tool returns a secret value; every request is approved in the app |
Use it with an AI agent (MCP)
keyfold mcp lets Claude Code, Cursor, Codex, Gemini CLI and other MCP clients use your API keys without the model seeing them. Its seven tools list project and key names, write a .env file you approve, run a command with the keys injected, store a key, create a project and import a .env file. None of them returns a secret value. Every request waits for your click in the Keyfold app, which shows the command or file the keys are for.
- Install Keyfold for Mac. In the app, open Settings › General › Command line and MCP and click Install, which puts
keyfoldon yourPATH. - Add the server to your client:
claude mcp add --scope user keyfold -- keyfold mcpCursor (.cursor/mcp.json): { "mcpServers": { "keyfold": { "command": "keyfold", "args": ["mcp"] } } }
A command you approve can still print a key, and the model reads what it prints; the MCP guide covers that and one-hour approvals. The server needs the Keyfold app running and unlocked on the same Mac. The Dockerfile builds it on Linux only so that MCP directories can read its tool list.
MCP Registry name: mcp-name: io.github.codewithkolin/keyfold
Docs
- Vault format: every byte of the file, and how it is authenticated.
- Threat model: what Keyfold protects against, and what it cannot.
- MCP and CLI guide: connecting an AI agent without showing it your keys.
Build and test
cargo test --workspacecargo clippy --workspace --all-targets -- -D warnings cargo build --release -p keyfold-cli # the keyfold binary
Rust stable, no other toolchain needed.
Security
Please report vulnerabilities privately; see SECURITY.md.
Licence
AGPL-3.0-only. See the LICENSE file in each crate. The Keyfold desktop app around these crates is proprietary.