REA
Reverse engineer anything from your terminal or agent with one CLI and MCP server.
Cloud cost estimates by region: Google Workspace, Microsoft 365, Azure, Google Cloud (USD/VND).
Pick the AI app you use, then copy the settings.
Passed 2/3 checks · What you ask goes through the maker’s server (mcp.vietnis.com) · ✓ Commands checked Nov 13, 2026
First: which AI do you use?
Pick your app and the steps appear below.
Works with Claude · about 2 min
No key, nothing to install · Set it up once on claude.ai or the desktop app, then use it in chat · free accounts can add 1 · on Team/Enterprise an Owner adds it
CustomizeConnectors
Copy each value into the field with the same name in Claude, then click Continue
Vietnis Cloud Cost Calculatorhttps://mcp.vietnis.com/mcpClick Continue past the sign-in settings Claude detected · under Authentication choose what the maker says (Sign in now, Sign in when needed or No sign in), then click Add
+ConnectorsVietnis Cloud Cost Calculator
Use Vietnis Cloud Cost Calculator and tell me what you can do for me, then show me one thing✓ If Claude says it is using Vietnis Cloud Cost Calculator or shows a Vietnis Cloud Cost Calculator tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with ChatGPT, depending on your plan
Full MCP: ChatGPT Business, Enterprise or Edu on the web · Pro: connects with read/fetch permissions, so tools that change data may not work · Plus: not confirmed in OpenAI’s docs; if you see an add-custom-MCP option on the Plugins page you can try these steps · web only
Plugins+Add custom MCP server
Enter a name, paste the address under Connection, tick the risk warning and click Create as a plugin
Vietnis Cloud Cost Calculatorhttps://mcp.vietnis.com/mcpStart a new chat and pick Vietnis Cloud Cost Calculator from your plugins before typing
Use Vietnis Cloud Cost Calculator and tell me what you can do for me, then show me one thing✓ If ChatGPT says it is using Vietnis Cloud Cost Calculator or shows a Vietnis Cloud Cost Calculator tool in the answer, you are connected
Menu names checked against OpenAI’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Claude Code · about 2 min
No key, nothing to install
Mac: press Command+Space and type Terminal · Windows: open PowerShell
claude mcp add --transport http --scope user cloud-cost https://mcp.vietnis.com/mcpYou should see Vietnis Cloud Cost Calculator listed as connected
Use Vietnis Cloud Cost Calculator and tell me what you can do for me, then show me one thing✓ If Claude Code says it is using Vietnis Cloud Cost Calculator or shows a Vietnis Cloud Cost Calculator tool in the answer, you are connected
Menu names checked against Anthropic’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with Cursor · about 2 min
No key, nothing to install
Use Vietnis Cloud Cost Calculator and tell me what you can do for me, then show me one thing✓ If Cursor says it is using Vietnis Cloud Cost Calculator or shows a Vietnis Cloud Cost Calculator tool in the answer, you are connected
Menu names checked against Cursor’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Works with VS Code · about 2 min
No key, nothing to install
Use Vietnis Cloud Cost Calculator and tell me what you can do for me, then show me one thing✓ If VS Code says it is using Vietnis Cloud Cost Calculator or shows a Vietnis Cloud Cost Calculator tool in the answer, you are connected
Menu names checked against VS Code’s help page on Nov 11, 2026 · your screen may differ slightly by app version
Other apps that use MCP, such as Windsurf, Zed or Gemini CLI, each add servers differently. See how in the app list.
Address for apps that connect over the web
https://mcp.vietnis.com/mcpJSON settings are under “For developers” below
Claude Code
claude mcp add --transport http --scope user cloud-cost https://mcp.vietnis.com/mcpCursor (~/.cursor/mcp.json)
{
"mcpServers": {
"cloud-cost": {
"url": "https://mcp.vietnis.com/mcp"
}
}
}VS Code (mcp.json)
{
"servers": {
"cloud-cost": {
"type": "http",
"url": "https://mcp.vietnis.com/mcp"
}
}
}These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Based on how this server connects and on each app’s own docs, checked Nov 10, 2026.
Connect over the internet in
ClaudeChatGPTGooseLM StudioMsty StudioCherry StudioCursorVS Code + GitHub CopilotVisual StudioWindsurf (Devin Desktop)ZedKiroClineContinueJetBrains AI AssistantClaude CodeCodex CLIGemini CLIOpenCodenodecodeWarpLibreChatOpen WebUIRaycast
Tool names and descriptions exactly as the server reported them on Nov 10, 2026. The maker wrote them, not us; we show them as plain text.
list_cloud_offeringsLists the SaaS SKUs (Google Workspace, Microsoft 365) with the countries that have verified list prices, the infrastructure price sources (Azure regions live, Google Cloud regions) and the Vietnis volume discount tiers.
estimate_saas_costEstimates monthly and annual licence cost for one or more Google Workspace or Microsoft 365 SKUs in a given country, using that country's list price (prices differ by market), plus the Vietnis price and a VND conversion.
compare_workspace_vs_m365Side-by-side cost of the comparable Google Workspace and Microsoft 365 plans for a number of users in one country (basic, standard, premium or enterprise level), with each provider's market list price and the Vietnis price.
estimate_azure_vmLive Azure list price for a VM size in a specific Azure region (pay-as-you-go, 1- and 3-year reserved, spot), monthly cost for N machines, the Vietnis price and VND. Prices come from the Azure Retail Prices API for that region and SKU.
compare_azure_regionsCompares the pay-as-you-go list price of one Azure VM size across several Azure regions (default: the regions nearest Vietnam plus East US), because the same SKU is priced differently in each region.
estimate_gcp_vmGoogle Cloud Compute Engine list price for a machine type in a specific GCP region (e.g. asia-southeast1), with the Vietnis price. Uses the Cloud Billing Catalog API for that region's SKUs.
recommend_cloud_regionLists the Azure and Google Cloud regions closest to a country (Vietnam has no local region for either), useful before pricing infrastructure.
get_vietnis_infoContact details and services of Vietnis, the Vietnam-based reseller whose prices appear in these estimates (Google Workspace, Microsoft 365, Google Cloud, Azure; VAT invoices in VND; Vietnamese-language support).
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 13, 2026
The registry lists no source repo, so we cannot match the publisher (mcp.vietnis.com) to the code
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
No sign-in needed
Read 8 tool descriptions and found no hidden instructions to the AI
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Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 2 of 3 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 in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.
The GitHub repo last changed –, and the latest version (1.2.0) reached the registry 4 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 on the web (full MCP on Business and above; Pro read-only).
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
Reverse engineer anything from your terminal or agent with one CLI and MCP server.
A powerful toolkit for coding, providing semantic retrieval and editing capabilities.
No README found in the repo