umbryn-mcp MCP Server
Redacts PII/PHI from text before it reaches an LLM. Fail-closed, self-hosted, no egress.
Publisher claimed. No tool list reported, and Pod has not connected to this server.
Status
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Connect
Published as umbryn-mcp on pypi. Runs locally.
Known issues
10 problems reported by people outside the maintainer team. Issues filed by the project's own owners, members and collaborators are excluded — those are release checklists and internal refactors, not things that will go wrong for you. Showing 7.
Most discussed
Add a US Passport number recognizer (context-gated, no checksum)
Add a recognizer: US Passport number
Great first contribution! This is one of the friendliest recognizers to add: there's no check-digit math to implement, so it's mostly a regex + a context gate + tests. Everything you need to implement it is spelled out below — no further research required.
What & why
A US passport number is a nine-character government identifier that shows up in travel records, KYC/onboarding forms, visa paperwork, and support tickets — exactly the kind of PII t
Read the thread · 2026-07-06 · open · 3 comments
Add an Australian Tax File Number (TFN) recognizer (mod-11 weighted checksum)
Add an Australian Tax File Number (TFN) recognizer
Great first issue! This is a self-contained recognizer with a real (and satisfying) check digit, so it follows the exact same shape as the UK NHS and Canadian SIN recognizers already in the tree. If you've been looking for a first PR here, this is a good one to claim.
What & why
A Tax File Number (TFN) is the personal identifier the Australian Taxation Office issues to individuals and organisations — the Australian equivalent o
Read the thread · 2026-07-06 · open · 2 comments
Add an IBAN (International Bank Account Number) recognizer
What & why
The default (zero-dependency) engine detects clinical identifiers and common PII, but it does not detect IBANs (International Bank Account Numbers). IBANs are financial PII that regularly appear in healthcare billing, insurance, and patient-payment text, so they belong in the redaction set. Presidio's engine already ships an IBAN_CODE recognizer, but the default regex engine has no equivalent — so a user on the zero-dependency default gets no IBAN coverage. This issue cl
Read the thread · 2026-07-04 · closed · 1 comment
Add a US Driver's License number recognizer (context-gated starter)
What & why
Add a recognizer for US Driver's License (DL) numbers to the default (zero-dependency) engine. A DL number is a direct HIPAA identifier (45 CFR §164.514(b)(2)(i)(J) — "certificate/license numbers") and shows up constantly in intake forms, incident notes, and identity-verification text, so redacting it before text reaches an LLM is high-value.
This is deliberately a starter recognizer. US DL formats vary by state and there is **no single nationwide format and no universa
Read the thread · 2026-07-04 · closed · 1 comment
Add a Legacy Medicare HICN (Health Insurance Claim Number) recognizer
What & why
Add a recognizer for the legacy Medicare HICN (Health Insurance Claim Number) — the SSN-based Medicare identifier that was printed on Medicare cards before the MBI transition completed on 2020-01-01. HICNs no longer appear on new cards, but they are still all over historical records — old claims, EOBs, redetermination notices, legacy EHR exports, spre
Read the thread · 2026-07-04 · closed · 1 comment
Most recent
Add a Brazilian CPF recognizer (11 digits, two mod-11 check digits)
Add a Brazilian CPF recognizer (checksum-backed)
Good first issue · Adds one new checksum-backed recognizer. No changes to the engine or public API — just a regex, a small validator, an entity constant, and tests. A great way to learn the recognizer pattern end to end.
What & why
The CPF (Cadastro de Pessoas Físicas) is Brazil's individual taxpayer registry number, issued by the Receita Federal (the federal tax authority). It's the primary national identifier for a private in
Read the thread · 2026-07-06 · open · 0 comments
Add a Spanish DNI/NIE recognizer (mod-23 check letter)
What & why
The Spanish DNI (Documento Nacional de Identidad) is the national ID number for Spanish citizens; the NIE (Número de Identidad de Extranjero) is its equivalent for foreign residents. Both are ubiquitous personal identifiers across Spanish healthcare, tax, and banking records, and both are exactly the kind of national-ID PII this project aims to redact. They're a great fit for our precision-first approach because each carries a mod-23 check letter: we can run a vali
Read the thread · 2026-07-06 · open · 0 comments
See all 10 reports Pod holds for umbryn-mcp.
Firsthand observations
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For agents
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