PESEL/NIP/REGON Validator

com.apished/pesel-nip-regon-validatorVersion 1.0.0

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

Status

Responds154 msNov 14, 2026, 13:49 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 13:49 UTC
Latency: 154 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: EU hosting detected (detected, not a legal statement)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://apished.com/mcp/v1/idvalidateResponds154 msNov 14, 2026, 13:49 UTC

No sign-in

Claude Code

claude mcp add --transport http pesel-nip-regon-validator https://apished.com/mcp/v1/idvalidate

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: pesel-nip-regon-validator
Remote MCP server URL: https://apished.com/mcp/v1/idvalidate

Cursor

{
  "mcpServers": {
    "pesel-nip-regon-validator": {
      "url": "https://apished.com/mcp/v1/idvalidate"
    }
  }
}

VS Code

code --add-mcp '{"name":"pesel-nip-regon-validator","type":"http","url":"https://apished.com/mcp/v1/idvalidate"}'

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Tools

3 tools

Tools of PESEL/NIP/REGON Validator
	Description		Read-only	Idempotent	Open world
`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.	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.	Not declared	Not declared	Not declared	Not declared
`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 an impossible calendar date (e.g. Feb 30) is still reported invalid.	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 an impossible calendar date (e.g. Feb 30) is still reported invalid.	Not declared	Not declared	Not declared	Not declared
`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 4 8 over the first 13 digits (sum mod 11, 10 mapped to 0) must equal the 14th digit.	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 4 8 over the first 13 digits (sum mod 11, 10 mapped to 0) must equal the 14th digit.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Aug 18, 2026
Updated: Aug 18, 2026
Website: https://apished.com/⁠ (opens in a new tab)
Repository: Not given
Categories: Uncategorized
GDPR: Not declared

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