Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Turn rough requests into rigorously structured prompts, for any coding agent.
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.
AGENTFORGE_API_KEY, AGENTFORGE_API_URLValues marked secret are keys to your account. Never share them or paste them into a chat.
You need
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"agentforge": {
"command": "npx",
"args": [
"-y",
"agentforge-mcp"
],
"env": {
"AGENTFORGE_API_KEY": "your-value",
"AGENTFORGE_API_URL": "your-value"
}
}
}
}Run this in your terminal
claude mcp add agentforge --env AGENTFORGE_API_KEY=your-value --env AGENTFORGE_API_URL=your-value -- npx -y agentforge-mcpFill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"agentforge": {
"command": "npx",
"args": [
"-y",
"agentforge-mcp"
],
"env": {
"AGENTFORGE_API_KEY": "your-value",
"AGENTFORGE_API_URL": "your-value"
}
}
}
}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": {
"agentforge": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"agentforge-mcp"
],
"env": {
"AGENTFORGE_API_KEY": "your-value",
"AGENTFORGE_API_URL": "your-value"
}
}
}
}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.
AGENTFORGE_API_URL envThese settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Runs on your computer; the tool list appears in your AI app after you install it.
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
The registry name was verified against the domain sciscale.org (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
This one runs on your computer; there is no internet endpoint
Runs on your computer and uses local settings instead
Runs on your computer; we can only read tool lists from internet endpoints
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
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.
You need to fill in: AGENTFORGE_API_KEY
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).
The GitHub repo last changed –, and the latest version (0.1.4) reached the registry 6 months ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
In the same category: Spec Driven Development, Remote Desktop Commander, Zoo MCP
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.
Stop re-explaining what you want to your AI coding agent.
Hand it one rough sentence — get back a structured, tool-tuned prompt it can execute in one pass.
agentforge.sciscale.org · Quick start · npm
agentforge-mcp is the Model Context Protocol server for AgentForge. One tool, one job: turn a vague request into a sharp one.
You know the loop: you ask your coding agent for something, it misreads the half you didn't spell out, you correct it, it breaks something else, you re-explain. The fix isn't a smarter agent — it's a sharper *prompt*.
AgentForge does the prompt engineering for you. Give it "add a dark mode toggle that persists" and it:
Harness engineering is having a moment — but prompt engineering matters *more* in the coding-agent era, not less. Tested across 1,000+ real coding cases, projects with AgentForge in the loop reached a deployable state 147% faster.
No install — it runs through npx.
1. Get an API key. Sign in at agentforge.sciscale.org, open API keys, and create one. The key is shown once — copy it.
2. Add it to your agent.
Claude Code:
claude mcp add agentforge --env AGENTFORGE_API_KEY=af_your_key -- npx -y agentforge-mcp
Cursor / Windsurf / Claude Desktop — add to your MCP config (~/.cursor/mcp.json, ~/.codeium/windsurf/mcp_config.json, etc.):
{
"mcpServers": { "agentforge": { "command": "npx", "args": ["-y", "agentforge-mcp"], "env": { "AGENTFORGE_API_KEY": "af_your_key" } } } }
3. Use it. Ask your agent naturally — *"refine this with AgentForge, then build it: add a dark mode toggle that persists."*
agentforge_refine_prompt| Argument | Default | |
|---|---|---|
request | — | Your task in plain language (1–4000 chars). Rough is fine. |
target_tool | claude-code | claude-code, codex, cursor, aider, continue, windsurf, kimi, generic |
style | plan-first | plan-first, direct-edit, explore-first |
Returns the refined prompt, plus its Quality Engine score and your remaining daily usage.
| Free | Pro | |
|---|---|---|
| Refinements | 3 / day | Unlimited |
| Quality Engine | scored across 12 dimensions | scored + auto-refined until it passes ≥ 90 |
Don't want to wire up an MCP server at all? The same engine — same Quality Engine, same per-account Pro — runs right in your browser at [agentforge.sciscale.org](https://agentforge.sciscale.org). No install, no key, no config.
Paste a request, pick your target tool, copy the prompt — generation history and advanced modes included:
agentforge-mcp is a thin client — no engine logic ships in this package. Your request goes to the AgentForge API, the hosted engine does the extraction, formatting, and quality-checking, and the prompt comes back. The engine keeps improving without you ever updating this package.
| Variable | Default | |
|---|---|---|
AGENTFORGE_API_KEY | — | Required. Your API key. |
AGENTFORGE_API_URL | https://agentforge.sciscale.org/api/v1/refine | Override the endpoint (rarely needed). |
npm install
npm run build # tsc -> dist/ node dist/index.js # runs on stdio
MIT — see LICENSE.
agentforge-mcp is part of AgentForge — a SciScale studio product.