Blog

Thoughts, updates, and insights from the Superagent team.

EngineeringOctober 21, 20257 min read

The March of Nines

The gap between a working demo and a reliable product is vast. Andrej Karpathy calls this the 'march of nines' — when every increase in reliability takes as much work as all the previous ones combined. This is the hidden engineering challenge behind every production AI system.

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EngineeringOctober 20, 20258 min read

The case for small language models

Most agents today rely on large, general-purpose models built to do everything. If your agent has a single, well-defined job, it should also have a model designed for that job. This is the case for small language models: models that handle one task, run locally, and can be retrained as your data evolves.

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ResearchOctober 11, 20255 min read

Why Your AI Agent Needs More Than Content Safety

You've enabled Azure Content Safety or Llama Guard. Your AI agent still isn't secure. Here's why content filtering isn't enough when your AI takes actions.

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AnnouncementsOctober 10, 20254 min read

Shipped: Runtime Redaction and Command-Line Security

The past two weeks brought runtime redaction, a powerful CLI, URL whitelisting, and a developer experience that puts security directly in your workflow. Here's what shipped and why it matters for teams building with AI agents.

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EngineeringSeptember 30, 20254 min read

Three years later: AI can (now) defend AI

In 2022, Simon Willison argued that 'adding more AI' was the wrong fix for prompt injection and related failures. He was mostly right at the time. What people tried then were brittle ideas that either overblocked or were easy to trick. This post explains what has changed since, what has not, and why builders can now use AI to meaningfully defend their agents in production.

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AnnouncementsSeptember 24, 20252 min read

Introducing Superagent — Defend Your AI Agents in Runtime

Today, we are proud to announce Superagent — the runtime defense platform that keeps your AI agents safe from prompt injections, malicious tool calls, and data leaks.

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