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Gemini Executive Synthesis

Veil – a drop-in PII redaction proxy for any LLM API, with a normalization layer to strip zero-width Unicode characters.

Technical Positioning
A solution to strip PII from LLM API calls, specifically addressing the vulnerability of zero-width Unicode characters breaking existing PII filters, ensuring compliance and data security.
SaaS Insight & Market Implications
Veil addresses a critical security and compliance gap in LLM API usage: the failure of existing PII filters against zero-width Unicode character obfuscation. By acting as a drop-in proxy, it normalizes requests to strip these characters before PII detection, then re-inserts original values into responses. This directly solves a significant vulnerability where sensitive data (PII, SSNs, phone numbers) could bypass redaction, exposing enterprises to data breaches and regulatory non-compliance. The 'drop-in' nature and compatibility with streaming APIs simplify integration, making it an attractive solution for businesses already using LLMs but lacking robust PII protection. This product targets a clear market need for enhanced data privacy and security infrastructure around AI interactions, particularly as LLM adoption increases in regulated industries.
Proprietary Technical Taxonomy
PII redaction proxy LLM API calls zero-width Unicode characters PII filter normalization layer Presidio's NER model SSNs phone numbers

Raw Developer Origin & Technical Request

Source Icon Hacker News Apr 8, 2026
Show HN: Veil a Drop-in PII redaction proxy for any LLM API

I was building a proxy to strip PII from LLM API calls and realized
that zero-width Unicode characters break basically every PII filter out
there. If you stick a zero-width space inside a name like T om, Presidio's
NER model doesn't see it as a name anymore. Same thing with SSNs and phone
numbers against regex. So I built a normalization layer that strips all
that stuff before running detection.The proxy itself is pretty simple. You swap your OpenAI base URL to point
at Veil and it redacts PII before the request leaves, then puts the real
values back in the response. Works with streaming too which was the hard
part honestly.veil-api.com free tier is 100 requests/month.

Developer Debate & Comments

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Frequently Asked Questions

Market intelligence mapped to Veil – a drop-in PII redaction proxy for any LLM API, with a normalization layer to strip zero-width Unicode characters..

What is the technical positioning of Veil – a drop-in PII redaction proxy for any LLM API, with a normalization layer to strip zero-width Unicode characters.?
Based on our AI analysis of the original developer request, its primary technical positioning is: A solution to strip PII from LLM API calls, specifically addressing the vulnerability of zero-width Unicode characters breaking existing PII filters, ensuring compliance and data security.
Which technical concepts are associated with Veil – a drop-in PII redaction proxy for any LLM API, with a normalization layer to strip zero-width Unicode characters.?
Our proprietary extraction maps Veil – a drop-in PII redaction proxy for any LLM API, with a normalization layer to strip zero-width Unicode characters. to adjacent architectural concepts including PII redaction proxy, LLM API calls, zero-width Unicode characters, PII filter.

Engagement Signals

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Cross-Market Term Frequency

Quantifies the cross-market adoption of foundational terms like streaming and LLM API calls by tracking occurrence frequency across active SaaS architectures and enterprise developer debates.