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Long-form guides on AI audit logging, guardrails, PII and compliance — written while building SignalVault.

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How to Detect and Redact PII Before It Reaches an LLM

Where to put PII detection in an LLM app, which identifiers to validate rather than regex, how to rewrite the request before the provider sees it, and what to log instead of the value.

PII11 min read

What We Shipped in H1 2026

A look at the features and infrastructure work we shipped in the first half of 2026 — from transparent proxy support and tool call audit logs to hardened auth and production reliability improvements.

Product3 min read

AI Audit Logging in the Agent Era

Six months ago, logging LLM calls was enough. Now agents invoke tools, chain actions, and operate autonomously - and most audit logs miss the events that matter. Here's what the next version looks like.

Audit logging6 min read

The Complete Guide to AI Audit Logging

Learn what AI audit logging is, what to log, encryption requirements, retention policies, and how audit logs enable SOC2/GDPR compliance.

Audit logging5 min read

How to Add Guardrails to LLM Applications

A practical guide to implementing guardrails for AI applications — detect PII, block secrets, and enforce policies before they become incidents.

Guardrails2 min read

How to Detect PII in AI Prompts

Learn how to automatically detect and block personally identifiable information in LLM prompts before it reaches third-party AI providers.

PII2 min read