[API Security & Data Protection Blog]

Guides, best practices, and product updates on securing API traffic, detecting sensitive data, and staying compliant.

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Security

Secure LLM Gateway: What It Takes to Protect AI Traffic

What makes an LLM gateway secure — PII redaction, secret scanning, injection detection, tool restrictions, audit trails — and how to evaluate one.

Ben @ Grepture

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What Is an AI Gateway? And When Do You Need One?

What an AI gateway is, how the proxy architecture works, and the five capabilities that matter — routing, cost tracking, security, observability, prompts.

Engineering

Why Presidio Isn't Enough for PII Redaction

Microsoft Presidio is a great PII detection toolkit — but production LLM redaction needs more than detection. Here's where it stops and what fills the gap.

Replay Production Traffic to Catch LLM Regressions

Replay real production requests against a new prompt or model, score the new output against the original, and catch regressions before you ship.

Product Updates

How We Redact PII Before It Reaches the LLM

Why You Can't Trust LLM-as-a-Judge Scores (Yet)

Restrict Which Tools Your AI Agents Can Call

How NanoGPT Stops Users From Leaking Secrets Into Every Major LLM

Debug Mode — See Exactly What Grepture Redacts and Restores

Budgets: Hard Spend Caps on Your AI Traffic

Route TypingMind Through Grepture — Privacy, Centralized Routing, and Observability

Your vector store is a permanent PII leak

Working with the Grepture CLI: Local Sessions

OpenAI Privacy Filter: A New PII Model You Can Run Locally

LLM Observability Tools Compared: The 2026 Landscape

LLM Fallback Routing: Never Go Down With Your Provider

Datasets: Production Logs as Test Suites

How to Track and Reduce AI API Costs

Why Teams Need an AI Gateway

Securing MCP Connections Through Your AI Gateway

GDPR-Compliant AI: A Developer's Practical Guide

A/B Test Your Prompts in Production

Best Open Source Models for PII Redaction

Introducing the Grepture CLI — A Local AI Gateway

LLM Evals on Real Traffic — Not Just Test Suites

What is PromptOps? A Complete Guide for Engineering Teams

Trace Mode — Full Observability Without the Proxy Hop

Route Cursor Through Grepture — Observability, Cost Tracking, and PII Protection for Your Team

Route Claude Code Through Grepture — Observability, Cost Tracking, and PII Protection for Your Team

Prompt Management: Version Control for Your LLM Prompts

From PII Redaction to AI Gateway — Why We're Expanding Grepture

Indirect Prompt Injection: The Attack That Hides in Your Data

Your LLM Observability Tool Is Logging PII — Here's How to Fix It

How to Secure Your RAG Pipeline: Preventing Data Leaks in Retrieval-Augmented Generation

Why Your AI Agents Are Leaking Data (And How to Stop Them)

How to Prevent Sensitive Data Leaks in LLM API Calls

LLM Security Tools Compared: Gateways, DLP, Guardrails, and Proxies

Mask and Restore: Reversible Redaction That Keeps LLMs Useful

Prompt Injection Prevention for Production LLM Apps

EU AI Act Compliance for AI Engineers: What You Need to Do Before August 2026

PII Detection Best Practices for AI Pipelines

Introducing Grepture — Content-Aware API Security Proxy