From Prompting to Agent Engineering
Prompting matters, but it is only one control layer. Reliable agents come from designing the loop, validating tool use, tracing decisions, and treating runtime behavior as the real unit of quality.
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Production Failure Modes in AI Agents and How to Anticipate Them
AI agents usually do not fail with a dramatic crash. They fail quietly through wrong tool calls, invalid arguments, retry storms, looping behavior, and weak recovery. This article explains where the agent loop breaks and how to design traces, guardrails, limits, checkpointing, idempotency, and evals that catch incidents before users do.
Responses API, Agents SDK, and the Modern Agent Stack
Most teams think they are choosing a framework. In practice, they are choosing what they will be able to see, control, and recover when an agent fails. This article explains the execution layer, orchestration layer, state tradeoffs, and the real architectural decisions behind a modern agent stack.
How to Build a Useful Eval Set for a Tool-Using Agent
Learn how to design an eval set for a tool-using agent using trace-level evaluation, dataset splits, layered scoring, and realistic failure cases that catch regressions before production.
Agent Evaluation and Tracing: Why Prompting Is Not Enough
Prompting can improve a single run, but it cannot prove that an agent workflow is reliable. This article explains how traces, scorecards, offline evals, and online monitoring turn agent quality into an engineering discipline.
Tracing Agent Behavior: The Fastest Way to Understand What Went Wrong
If an agent fails and you only have the final answer, you are debugging blind. This article explains how useful traces expose the exact step, tool, state, or context failure that actually broke the run.
Retries, Backoff, and Recovery Paths for Tool-Using Agents
Reliable agents are not the ones that never fail. They are the ones that fail into the right path. Here is how to classify tool failures into retry, replan, user input, or hard stop, and why retry policy belongs at the tool boundary.
Stopping Conditions: How Agents Know When to Finish
Most bad agent experiences come from bad stopping decisions. Learn how to design stop logic in code with explicit exit states, tool signals, step limits, and traceable runtime policies.
Tool Calling Agents: How Models Turn Decisions Into Actions
Tool use is where an agent stops generating text and starts affecting real systems. This article explains why tool design acts as both decision boundary and action contract, and how better schemas, validation, and tracing make tool calling agents more reliable.
How to Design a Single-Agent Workflow Before You Add Complexity
Most agent failures are not prompt failures. They happen because teams misunderstand the control loop the system is actually running. This article breaks the loop into its real runtime parts and shows why that changes debugging, reliability, and production behavior.