Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Balances on 7 EVM chains, Solana, Tron: free one-chain lookup; full call 0.002 USDC via x402.
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Works in Claude on the web, desktop and mobile:
https://wallet-balances.nextill-pos.workers.dev/mcpOpen Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"multichain-balances": {
"command": "npx",
"args": [
"-y",
"devx-multichain-balances",
"mcp"
]
}
}
}Run this in your terminal
claude mcp add --transport http multichain-balances https://wallet-balances.nextill-pos.workers.dev/mcpclaude mcp add multichain-balances -- npx -y devx-multichain-balances mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"multichain-balances": {
"url": "https://wallet-balances.nextill-pos.workers.dev/mcp"
}
}
}Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"multichain-balances": {
"command": "npx",
"args": [
"-y",
"devx-multichain-balances",
"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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"multichain-balances": {
"type": "http",
"url": "https://wallet-balances.nextill-pos.workers.dev/mcp"
}
}
}Paste into .vscode/mcp.json in your project
{
"servers": {
"multichain-balances": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"devx-multichain-balances",
"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:
https://wallet-balances.nextill-pos.workers.dev/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.
We have not read this server’s tool list yet; we check endpoints in rotation.
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 devx-agent, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
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.
Either way works: install it on your computer or connect to the cloud version.
The GitHub repo last changed –, and the latest version (2.1.0) reached the registry 6 days ago.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, FOGA node
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.
One call, nine chains. Native coin plus the major tokens for an address on Base, Ethereum, Arbitrum, Optimism, Polygon, Avalanche, BNB Chain, Solana and Tron. It is built for AI agents and apps that need to answer "what does this wallet hold?" without running their own RPC setup.
Everything here is read-only. It never asks for keys and never moves funds.
| What | Cost | |
|---|---|---|
CLI / stdio MCP devx-multichain-balances (v2) | Client for the hosted API below. One chain (native + USDC, USDT on Tron) is free; all / multichain_balances is the paid call, paid from your own wallet key | free / 0.002 USDC |
Remote MCP https://wallet-balances.nextill-pos.workers.dev/mcp | basic_balance (one chain, free) + multichain_balances_info | free |
HTTP API GET /v1/balances | Up to 3 addresses (one EVM, one Solana, one Tron) → native + USDC, USDT, DAI, EURC, bridged USDC, WETH, WBTC/cbBTC per EVM chain; SOL + USDC/USDT (SPL); TRX + USDT/USDC (TRC-20); plus up to 10 custom tokens (ERC-20, SPL mint, TRC-20). Block numbers/slots included, stablecoin face-value total | 0.002 USDC via x402 on Base |
Live: https://wallet-balances.nextill-pos.workers.dev · token list: /tokens.json
npx devx-multichain-balances 9WzDXwBbmkg8ZTbNMqUxvQRAyrZzDsGYdLVL9zYtAWWM # free: SOL + USDC on Solana
npx devx-multichain-balances TNXoiAJ3dct8Fjg4M9fkLFh9S2v9TXc32G # free: TRX + USDT on Tron npx devx-multichain-balances 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 --chain arbitrum # free: ETH + USDC on Arbitrum
export X402_PRIVATE_KEY=0x... # a Base wallet holding a little USDC (use a dedicated low-balance wallet) npx devx-multichain-balances all 0xd8dA...6045,9WzD...AWWM --chains base,ethereum,solana
How paying works: the CLI asks the API for its x402 quote, checks that it is USDC on Base, goes to 0xB3cD…f247 and is at or under --max-usd (default 0.01), then signs a gasless EIP-3009 authorization with your key via @x402/fetch. The key stays on your machine. Without a key, all prints the quote, pays nothing and exits with code 2. Since v2.0.0 the package is a thin client. It no longer ships the balance-reading code, and the addresses you query are sent to the hosted API.
Claude Desktop / Cursor (stdio):
{ "mcpServers": { "multichain-balances": { "command": "npx", "args": ["-y", "devx-multichain-balances", "mcp"], "env": { "X402_PRIVATE_KEY": "0x... (optional, enables the paid tool)" } } } }
Or remote (streamable HTTP): https://wallet-balances.nextill-pos.workers.dev/mcp (free tool + info only)
Tools: basic_balance (free), multichain_balances (0.002 USDC per call, pays only if X402_PRIVATE_KEY is set and never above 0.01 USDC, otherwise returns the quote), multichain_balances_info.
GET https://wallet-balances.nextill-pos.workers.dev/v1/balances?address=0x...,<solana>,<T...>[&chains=base,ethereum,solana,tron][&tokens=base:0xToken,solana:<mint>,tron:<T...>]
402 with an x402 v1 body (X-PAYMENT, network base) and a v2 PAYMENT-REQUIRED header (PAYMENT-SIGNATURE, eip155:8453). Both work. POST with a JSON body works too.0xB3cDDccEe6B150c8efFD55B961afc0Ecefe7f247, settled through the Coinbase CDP facilitator, listed in the CDP x402 Bazaar.summary.chains_failed.chains defaults to every chain that matches the addresses you gave (evm = the 7 EVM chains)./tokens.json), and you can pass extra tokens yourself.cache.hit).OpenAPI: /openapi.json · Terms: /terms
cli/: npm package devx-multichain-balances (CLI + stdio MCP client for the hosted API), npm testworker/: the Cloudflare Worker behind the hosted API (npm run build, npm test)MIT. Made by DevX · madebydevx@gmail.com