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
Fify
Overview
Description from the maker (original English)
Turn grounded AI answers into trusted comparisons, plans, timelines, and decision views.
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: Other
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.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
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:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://fify-chatgpt.renfei1992.chatgpt.site/api/mcpRun this in your terminal
claude mcp add --transport http fify https://fify-chatgpt.renfei1992.chatgpt.site/api/mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"fify": {
"url": "https://fify-chatgpt.renfei1992.chatgpt.site/api/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.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"fify": {
"type": "http",
"url": "https://fify-chatgpt.renfei1992.chatgpt.site/api/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:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://fify-chatgpt.renfei1992.chatgpt.site/api/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.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
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 with the GitHub account renfei-design, 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 checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … 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 Otheri
- More stars than 0% of the other 32700 servers in this category
- Published to the registry more recently than 30% of the other 32700 servers in this category
- Basic checks equal to or better than 100% of the other 32700 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 Fify 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 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 2 months 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: Spec Driven Development, Remote Desktop Commander, Agent Data Tools: Utilities
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 2 days ago
Install
Agent Data Tools: Utilities
by Nutshell2000
103 tools: JSON repair, CSV, hashes, cron, dates, units, validators. 25 free calls.
Runs in the 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.
Fify plugin marketplace
Fify turns grounded AI answers into trusted interactive comparisons, plans, checklists, timelines, and decision views. It preserves the complete plain-language answer as an authoritative fallback and performs no consequential actions.
This repository is a Git-backed marketplace for Codex. The plugin is self-contained: it requires Node.js 20 or newer, performs no separate npm or pnpm install, asks users for no Fify account or end-user API key, and runs a bundled deterministic information-view compiler locally.
Install in Codex
codex plugin marketplace add renfei-design/fify-plugincodex plugin add fify@fify
Start a new Codex task after installation, then ask normally or tag @Fify:
- Compare these options by cost and risk.
- Make this rollout plan a checklist I can work through.
- Show these milestones as a timeline.
The repository is the marketplace. No package installation, Fify account, or end-user API key is required.
Use with ChatGPT
This Git marketplace cannot be added directly as a user-defined ChatGPT marketplace. You can still use Fify in ChatGPT through a developer-mode MCP connection:
- Open Settings → Security and login and enable Developer mode.
- Open the ChatGPT Plugins page and select the plus button.
- Name the connection Fify and use the public MCP endpoint below.
- Review the discovered read-only tool, create the connection, and add it to a new chat.
https://fify-chatgpt.renfei1992.chatgpt.site/api/mcp
Developer mode availability depends on the user's account and workspace policy. Public discovery across ChatGPT and Codex requires publication to OpenAI's universal plugin directory. This repository is the Codex distribution source and the hosted endpoint is the direct ChatGPT connection source; neither makes Fify automatically discoverable in ChatGPT. See OpenAI's connection guide and plugin packaging guide.
Use from another MCP client
Fify also exposes a public Streamable HTTP MCP endpoint for compatible clients:
https://fify-chatgpt.renfei1992.chatgpt.site/api/mcp
The tool always returns a complete plain-language fallback. The inline interactive view requires a host that supports the MCP Apps UI extension.
See MARKETPLACE_LISTING.md for verified listing metadata, capabilities, limitations, and submission copy.
What is included
- A Codex plugin manifest and Fify information-UI skill.
- A bundled local MCP server with
render_information_ui. - Product screenshots, activation evals, and reviewer cases.
- Validation and end-to-end protocol smoke tests.
- Official MCP Registry metadata for the public remote endpoint.
The local compiler does not research or verify facts. Codex supplies the grounded answer and sources, and Fify validates and renders that material. The bundled server limits each host identity to 20 successful renders per UTC day and two concurrent renders.
Verify locally
npm run checkSee BUILD_PROVENANCE.md for the public bundle boundary and SECURITY.md for reporting guidance.
License
Apache-2.0. Bundled dependency notices are in THIRD_PARTY_NOTICES.md.