Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Validate IBANs, generate test IBANs with real bank codes, look up BICs and bank codes (IBANgen).
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IBANGEN_API_KEYValues marked secret are keys to your account. Never share them or paste them into a chat.
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Works in Claude on the web, desktop and mobile:
https://ibangen.com/api/mcpOpen Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"ibangen": {
"command": "uvx",
"args": [
"ibangen-mcp"
],
"env": {
"IBANGEN_API_KEY": "your-value"
}
}
}
}Run this in your terminal
claude mcp add --transport http ibangen https://ibangen.com/api/mcpclaude mcp add ibangen --env IBANGEN_API_KEY=your-value -- uvx ibangen-mcpFill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"ibangen": {
"url": "https://ibangen.com/api/mcp"
}
}
}Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"ibangen": {
"command": "uvx",
"args": [
"ibangen-mcp"
],
"env": {
"IBANGEN_API_KEY": "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": {
"ibangen": {
"type": "http",
"url": "https://ibangen.com/api/mcp"
}
}
}Paste into .vscode/mcp.json in your project
{
"servers": {
"ibangen": {
"type": "stdio",
"command": "uvx",
"args": [
"ibangen-mcp"
],
"env": {
"IBANGEN_API_KEY": "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.
ChatGPT connects only to servers on the internet:
https://ibangen.com/api/mcpMenu names can differ slightly by plan and over time.
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These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
validate_ibansCheck IBANs: country format, length, MOD-97 check digits and, where the country has one, the national check digit of the account number. Up to 10 IBANs per call without an API key. A valid IBAN is well-formed; it does not prove the account exists.
generate_test_ibansGenerate synthetic, checksum-valid test IBANs for a country (119 countries, real bank codes). Without an API key: up to 10 a day per user. Name a bank to get IBANs of that bank: free samples without a key, any number with a paid key. Test data only, never for payments.
bank_test_ibansA bank's BIC, domestic bank code and free sample test IBANs that carry the bank's real code, plus the bank page and the Bank Target Pack link for up to 250 IBANs of that bank.
iban_formatA country's IBAN length, structure (bank code, branch, account and check digit positions), SEPA membership, currency, national check digit, regex and one example test IBAN.
calculate_ibanBuild an IBAN from national bank details (bank code, branch code, account number). Adds the IBAN check digits and, where the country has them, the national check digits such as the French RIB key or the Italian CIN. Use iban_format to see which parts a country needs.
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 7, 2026
The registry name was verified with the GitHub account offx366, which owns the repo
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 504 ms (HTTP 200)
No sign-in needed
Read 5 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 3 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.
You need to fill in: IBANGEN_API_KEY
Either way works: install it on your computer or connect to the cloud version.
The GitHub repo last changed –, and the latest version (0.2.0) reached the registry 7 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, AvaHR
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.
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Official MCP server for IBANgen, the IBAN generator and validator for payment testing.
MCP server that gives AI agents IBANgen tools for IBAN and US bank account test data.
| Tool | Key needed | What it does |
|---|---|---|
validate_ibans | No (10 IBANs per call, small daily allowance per IP) | Country format, length and MOD-97 checksum. Paid keys add bank, BIC and SEPA Instant / VoP reachability. |
generate_test_ibans | No for country-level IBANs (10 a day per IP); a key for more and for bank targeting | Synthetic, checksum-valid test IBANs; optional seed and bank targeting (paid key). |
lookup_bank | Yes (bank-intelligence plan) | BIC or domestic identifier to registry records with sources. |
generate_us_test_accounts | Yes (free key is sufficient) | 1–10 US routing/account test rows; optional reproducible seed; no paid reveal or targeting. |
validate_us_routing_numbers | Yes (qualifying registry plan) | 1–10 routing numbers through the existing metered registry API; requires explicit approval of up to one API credit per distinct number. |
lookup_us_routing_number | Yes (existing API entitlement gates) | Source-backed routing lookup; requires explicit approval of one API credit. |
For assistants without MCP, the same product map is published as plain text at https://ibangen.com/llms.txt and https://ibangen.com/llms-full.txt.
Generated IBANs are test data only. A valid IBAN does not prove that an account exists. US account numbers are synthetic; routing references do not establish live ACH, Fedwire or account eligibility. The metered US tools do not replace the free web preview and do not bypass bank metadata gates. They never automatically retry a transport failure, because a credit may already have been consumed.
Add https://ibangen.com/api/mcp as a custom connector in ChatGPT, Claude, Cursor or VS Code (Streamable HTTP, no key needed to start; send Authorization: Bearer for paid-plan limits). It offers validate_ibans, generate_test_ibans, bank_test_ibans (free sample IBANs, BIC and bank code of one bank), iban_format and calculate_iban.
claude mcp add --transport http ibangen https://ibangen.com/api/mcp
pip install ibangen-mcp
{
"mcpServers": { "ibangen": { "command": "ibangen-mcp", "env": { "IBANGEN_API_KEY": "optional_for_validation_and_10_ibans_a_day" } } } }
Cursor uses the same block in .cursor/mcp.json. Get a free key (100 API calls a month) at https://ibangen.com/account?focus=api.
The same API is also sold on RapidAPI (IBAN plus US bank account and routing test data).
IBANGEN_API_BASE_URL overrides the default https://ibangen.com/api/v1.