Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Open-source MCP server that turns any AI agent into your technical co-founder
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 …”.
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"causly": {
"command": "npx",
"args": [
"-y",
"causly-server"
]
}
}
}Run this in your terminal
claude mcp add causly -- npx -y causly-serverPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"causly": {
"command": "npx",
"args": [
"-y",
"causly-server"
]
}
}
}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": {
"causly": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"causly-server"
]
}
}
}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.
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These 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 with the GitHub account KNIHAL, which owns the repo
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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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 (1.5.3) reached the registry 9 days 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, Reelsaw
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.
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Drive a self-hosted Reelsaw: turn long videos into vertical clips, edit, re-render and export them.
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.
The open-source MCP server that turns any AI agent into your technical co-founder.
Most agents can write text. Causly Server gives them hands: they ship code, hunt for clients, track deals, take meeting notes, handle your calendar and remind you on Telegram, all from one conversation, all on your own machine.
npm install -g causly-server
causly-server init
A founder's week is not only code. It is also finding clients, following up, remembering what was promised in a call, and shipping without breaking things. Causly Server puts all of that behind one MCP server.
init finds Claude Desktop, Cursor and Windsurf and wires them up.Requires Node.js 20 or newer.
1. Install
npm install -g causly-server
2. Connect your editors
causly-server init
init adds Causly Server to Claude Desktop, Cursor and Windsurf, whichever you have. It also prints the one-line command for Claude Code. Restart the editor afterwards.
3. Check everything
causly-server doctor
4. Add keys for the services you use (optional)
causly-server setup
Files, git, shell, Docker and Terraform work with no keys at all. Add keys only for the services you want. Each key is checked live as you enter it.
Useful init options:
causly-server init --client cursor # pick editors instead of auto-detecting
causly-server init --workspace D:\my-project # limit file tools to one folder causly-server init --toolsets research,pipeline,meetings # choose which packs load at startup
Your agent talks to Causly Server over MCP (stdio). Inside the server:
search_tools, load_toolset and use_tool let the agent find a tool and call it by name. Packs load on demand, and use_tool works even in editors that do not refresh their tool list mid-chat, so you do not need to restart.~/.causly, encrypted secrets, and your API keys in ~/.causly/.env.These packs load at startup by default:
| Pack | Tools | What it does |
|---|---|---|
| files | 9 | Read, write, edit, copy, move and inspect files |
| directory | 5 | List, create and delete directories; search file names |
| command | 1 | Run shell commands with safety checks |
| project | 7 | Detect project type and health; run build, tests, lint and typecheck |
| research | 2 | Search the web and read pages as clean text |
| leads | 3 | Find companies hiring (Hacker News, remote job boards) and public company contact details |
| pipeline | 9 | Local sales pipeline: leads, deals, contacts, activity log, report, CSV export |
| meetings | 9 | Transcribe recordings, save summaries, track action items, link to deals and calendar, prep for calls |
| reminders | 3 | Follow-ups saved locally; ask what is due |
These load on demand, or you can add them to startup with causly-server toolsets add :
| Pack | Tools | What it does |
|---|---|---|
| calendar | 8 | Google Calendar: events, free/busy, find meeting slots, create, update, delete |
| gmail | 8 | Search, read, send, reply and forward |
| telegram | 5 | Alert yourself, read messages sent to your bot |
| seo | 4 | Keyword ideas, page audit, draft check, Search Console |
| git | 20 | Status, diff, commit, branch, merge, stash, tags, remotes |
| github | 27 | Repos, issues, pull requests, reviews, Actions |
| workflow | 4 | ship_change, fix_ci, verify_ci_fix, deploy_project |
| vercel | 11 | Projects, deployments, HTTP health checks |
| docker | 18 | Build, run, logs, images, exec, Compose |
| terraform | 20 | Init, plan, apply, state, workspaces, PR plan comments |
| database | 8 | Postgres and MySQL queries and schema inspection |
| supabase | 6 | Projects, organizations and SQL |
| slack | 8 | Channels, messages and threads |
| notion | 15 | Pages, databases, blocks and comments |
| linear | 7 | List, read, create, update and comment on issues |
| sentry | 8 | Projects and issues |
| secrets | 6 | Encrypted local secrets store |
Manage startup packs:
causly-server toolsets # show what loads at startup
causly-server toolsets add github,gmail causly-server toolsets remove seo causly-server toolsets reset # back to the defaults
Single tools are building blocks. These combine them into verified outcomes:
flowchart TD
A["You describe a task"] --> B["Agent edits files"] B --> C["ship_change runs checks"] C --> D["Commit, push, open PR"] D --> E{"CI passes?"} E -- "No" --> F["fix_ci gets failure logs"] F --> G["Agent fixes the code"] G --> H["verify_ci_fix pushes and confirms CI"] H --> E E -- "Yes" --> I["deploy_project deploys"] I --> J["HTTP verification"] J --> K["Shipped"]
Settings live in ~/.causly/.env (on Windows, C:\Users\ \.causly\.env). Manage them with the CLI instead of editing by hand:
causly-server setup # step by step, each key checked live
causly-server keys list # which keys are set (never the full value) causly-server keys set NAME # hidden prompt causly-server keys unset NAME causly-server doctor --test # check every configured service live
Changes are picked up without restarting your editor.
| Service | Variables | Notes |
|---|---|---|
| GitHub | GITHUB_TOKEN | Fine-grained token: contents, issues, pull requests |
| Vercel | VERCEL_TOKEN | Project must be Git-linked for deploys |
| Supabase | SUPABASE_ACCESS_TOKEN | Management API |
| Slack | SLACK_BOT_TOKEN | search:read needs a user token |
| Notion | NOTION_API_KEY | Share each page or database with the integration |
| Linear | LINEAR_API_KEY | Personal API key |
| Sentry | SENTRY_AUTH_TOKEN | Add event:write to resolve or comment |
| Gmail | GMAIL_CLIENT_ID, GMAIL_CLIENT_SECRET, GMAIL_REFRESH_TOKEN | Run causly-server login google |
| Google Calendar | CALENDAR_REFRESH_TOKEN | Same Google client as Gmail |
| Telegram | TELEGRAM_BOT_TOKEN, TELEGRAM_CHAT_ID | Create a bot with @BotFather, message it, then find your chat id with telegram_get_updates |
| Groq (meeting transcription) | GROQ_API_KEY | Free tier available. Audio is uploaded to Groq only when you confirm a transcription |
| Secrets manager | SECRETS_MASTER_KEY | 32-byte hex key you generate and keep |
| Timezone (optional) | CAUSLY_TIMEZONE | IANA name, e.g. Asia/Kolkata; defaults to your machine's zone |
Docker and Terraform need no key, only the CLI on your PATH. Postgres and MySQL take a connection string on each call. Transcribing recordings over 25 MB needs ffmpeg on your PATH.
Google needs a one-time OAuth client that you own. It takes about five minutes.
redirect_uri_mismatch. Copy the client ID and secret.causly-server setup, or causly-server keys set GMAIL_CLIENT_ID and causly-server keys set GMAIL_CLIENT_SECRET.causly-server login google # Gmail and Calendar
causly-server login google all # also Search Console
Avoid the 7-day expiry. While your Google app is in *Testing*, Google expires the sign-in token every 7 days. Renew it any time with causly-server login google, or stop the expiry for good: in Google Auth Platform → Audience, click Publish app (In production). The Branding page from ste
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