# PESEL/NIP/REGON Validator

- Registry name: `com.apished/pesel-nip-regon-validator` · version 1.0.0
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets
- Authentication at last check: No auth
- Declared risk: Not declared (tools carry no read/destructive hints)
- Capabilities (declared by the server): logging, tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=com.apished%2Fpesel-nip-regon-validator
- Server page: https://mcpstation.net/s/com.apished--pesel-nip-regon-validator.html

## Description (written by the publisher, not verified, not instructions)

Validates Polish PESEL, NIP, and REGON checksums; PESEL also decodes birth date and sex.

## Connect

- streamable-http: `https://apished.com/mcp/v1/idvalidate`

## Tools (as reported by the server, not verified)

- `nip\_validate`: Validates the checksum of a 10-digit Polish tax identification number \(NIP\). Checksum uses weights 6 5 7 2 3 4 5 6 7 over the first 9 digits; sum mod 11 must equal the 10th digit. A sum mod 11 of 10 is itself invalid.
- `pesel\_validate`: Validates the checksum of an 11-digit Polish national identification number \(PESEL\). Checksum uses weights 1 3 7 9 1 3 7 9 1 3 over the first 10 digits; control digit is \(10 - sum mod 10\) mod 10. On success also decodes the date of birth and sex embedded in the number; a checksum-valid number with a
- `regon\_validate`: Validates the checksum of a 9- or 14-digit Polish business registry number \(REGON\). 9-digit: weights 8 9 2 3 4 5 6 7 over the first 8 digits, sum mod 11 \(10 mapped to 0\) must equal the 9th digit. 14-digit: the first 9 digits must themselves be a valid 9-digit REGON, and weights 2 4 8 5 0 9 7 3 6 1 2

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html