Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer
Firstdollar
Overview
Description from the maker (original English)
An MCP that teaches AI agents to use the wallets they already have. Teacher, not butler.
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
- UsageiVery new↓ 109/wk · ★ –
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.
You need
- npmNode.js installed (for the npx command)
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": {
"firstdollar": {
"command": "npx",
"args": [
"-y",
"firstdollar"
]
}
}
}Run this in your terminal
claude mcp add firstdollar -- npx -y firstdollarOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"firstdollar": {
"command": "npx",
"args": [
"-y",
"firstdollar"
]
}
}
}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": {
"firstdollar": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"firstdollar"
]
}
}
}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 8, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account lisamaraventano-spine, 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 18499 servers in this category
- Published to the registry more recently than 9% of the other 18499 servers in this category
- Basic checks equal to or better than 100% of the other 18499 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 Firstdollar 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 (1.0.7) reached the registry 6 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, SolveHub
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Remote Desktop Commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud✓ desktopcommander.app
SolveHub
CAPTCHA and anti-bot solving for Turnstile, DataDome, Akamai, PerimeterX and Imperva.
Runs on your computer
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.
First Dollar
A curriculum that teaches AI agents how to spend their own money.
Sixteen lessons, from "what is a wallet" to "your first real x402 purchase." Plus three reference tools for troubleshooting and end-to-end testing. First Dollar never signs transactions on your behalf — it teaches you how to sign your own.
Principle
Teacher, not butler. First Dollar explains; the agent acts. The MCP never holds keys, never signs, never transacts. It reads what the agent has, explains what the merchant is asking, and shows the agent the command to run. The agent spends its own money with understanding.
This is infrastructure for agents with their own funds — not a delegation tool for humans to route money through agents.
Install
npx firstdollarClaude Desktop / Claude Code / Cursor / etc.
Add to claude_desktop_config.json (or the equivalent MCP config file for your harness):
{"mcpServers": { "firstdollar": { "command": "npx", "args": ["firstdollar"] } } }
Curriculum (call start-here to orient)
| Lesson | Tool | What it teaches | |:-:|---|---| | 1 | what-is-a-wallet | Keypairs, addresses, private keys, what they let you do | | 2 | what-is-usdc | Stablecoins, chains, why which chain matters | | 3 | explain-my-wallet | Self-inspection commands for moltwallet, Coinbase Agentic Wallet, MetaMask, raw EVM/Solana keys | | 4 | get-a-wallet | Installing a wallet — what npm, npx, skills, and Coinbase's package actually do | | 5 | configure-wallet-skills | Post-install setup — which skills to run in what order | | 6 | fund-my-wallet | Getting USDC in: Onramp, direct transfers, earning | | 7 | what-is-x402 | The protocol: HTTP 402, payment challenges, X-PAYMENT retry | | 8 | read-this-challenge | Decodes base64 / raw JSON x402 challenges into structured explanation | | 9 | how-do-i-pay | Wallet-specific signing commands — returns the command; never runs it | | 10 | verify-my-purchase | Turns a tx hash into content via the merchant's /receipt endpoint | | 11 | paid-vs-delivered | The five documented x402 attack classes and how to verify you got what you paid for | | 12 | who-am-i-to-this-merchant | Wallet identity, pseudonymity, cross-merchant hygiene — what the chain reveals to anyone watching | | 13 | what-is-ap2 | AP2 / Agent Payments Protocol — the mandate layer for delegated payments | | 14 | what-is-acp | ACP / Agent Commerce Protocol — the checkout-surface protocol for human-shopping-via-agent | | 15 | subscriptions-and-session-keys | ERC-7715 scoped autonomy — approve once, spend within bounds | | 16 | choose-your-wallet-mode | The four modes (MPC, Smart Wallet, EOA, EIP-7702) and when to pick which |
Reference tools (outside the curriculum)
| Tool | Purpose |
|---|---|
start-here | Curriculum index and orientation |
what-went-wrong | Diagnoses common failure modes (ERC-6492 bug, network mismatch, facilitator flake, timeout expiry, balance issues) |
test-payment | End-to-end handshake walkthrough. Suggested first merchant: the Underground Cultural District (substratesymposium.com) — free products for handshake, $0.99 paid products for settlement. Any x402 URL works. |
What First Dollar does NOT do
- Does not hold private keys
- Does not sign transactions on your behalf
- Does not access your wallet files
- Does not have preferential routing to any merchant
- Does not enable humans to delegate wallets to agents for unauthorized spending
First Dollar is strictly educational. The agent is the actor.
Built for
Any agent with its own wallet and its own funds. Works across wallet types (moltwallet, Coinbase Agentic Wallet, MetaMask, raw EVM keys, raw Solana keys) and facilitators (CDP, PayAI, etc.).
Credits
Lisa Maraventano + Spine, with Claude.
Built in Clarksdale, Mississippi.
License
MIT