CUSIP/ISIN Validator — Security Identifier Validation
Overview
MCP CUSIP/ISIN Server
A Model Context Protocol (MCP) server for validating and parsing CUSIP and ISIN security identifiers using check digit algorithms.
Tools (4 total)
| Tool | Description |
|---|---|
cusip_validate | Validate a 9-character CUSIP using the Luhn-variant check digit algorithm |
cusip_parse | Parse a CUSIP into issuer code, issue number, and check digit |
isin_validate | Validate a 12-character ISIN using the Luhn algorithm |
isin_parse | Parse an ISIN into country code, NSIN, and check digit (extracts embedded CUSIP for US/CA) |
Install
npx @easysolutions906/mcp-cusip-isin
Claude Desktop
Add to your claude_desktop_config.json:
{
"mcpServers": {
"cusip-isin": {
"command": "npx",
"args": ["-y", "@easysolutions906/mcp-cusip-isin"]
}
}
}
Cursor
Add to .cursor/mcp.json:
{
"mcpServers": {
"cusip-isin": {
"command": "npx",
"args": ["-y", "@easysolutions906/mcp-cusip-isin"]
}
}
}
REST API
Set PORT env var to run as an HTTP server.
GET /cusip/validate?cusip=037833100-- validate a CUSIPGET /cusip/parse?cusip=037833100-- parse CUSIP into componentsGET /isin/validate?isin=US0378331005-- validate an ISINGET /isin/parse?isin=US0378331005-- parse ISIN into componentsPOST /validate/batch-- batch validate multiple CUSIPs and ISINs
Data Source
Pure algorithm -- no external dataset required. CUSIP uses a Luhn-variant checksum; ISIN uses standard Luhn over letter-to-number conversion.
Transport
- stdio (default) -- for local use with Claude Desktop and Cursor
- HTTP -- set
PORTenv var to start in Streamable HTTP mode on/mcp
Server Config
{
"mcpServers": {
"cusip": {
"command": "npx",
"args": [
"-y",
"@easysolutions906/mcp-cusip-isin"
]
}
}
}Project Info
Created At
3 months agoUpdated At
3 months agoAuthor Name
easysolutions906Star
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