Agent engineering, decoded

The Agent Loop

Ask anything about AI agents.

Grounded in 51 field notes, research, and every episode

What you will find

01

Grounded field notes

Concise, sourced patterns drawn from research and production practice.

02

Episode breakdowns

Big agent-engineering ideas unpacked without the hype or hand-waving.

03

Ask-anything agent

Query the whole knowledge base and get a direct, grounded answer.

04

The operating loop

Read → act → observe → correct. A durable mental model for every agent.

From the knowledge base

High-signal ideas for building agents that are capable, legible, and reliable.

FoundationsFeatured

What an agent loop is

An agent loop repeatedly reads the current state, chooses an action, uses a tool, observes the result, and corrects its plan. The model is only one component: reliable agents also need…

Useful?
anthropic.comsource ↗
EvaluationFeatured

Token budgets change agent capability

UK AI Security Institute evaluations found that increasing an agent's token budget from 1 million to 10 million tokens improved success on software-engineering tasks by roughly 25 percent.…

Useful?
aisi.gov.uksource ↗
ToolsFeatured

Reliable tool use

Tool-using agents work best with narrow tools, explicit schemas, actionable error messages, and observable results. Validate arguments before execution, use idempotency keys for side…

Useful?
platform.openai.comsource ↗
MemoryFeatured

Short-term and long-term agent memory

Short-term memory is the working context supplied on each model call: recent messages, the current plan, tool results, and task-local state; it is bounded by the context window and…

Useful?
arxiv.orgsource ↗
EvaluationFeatured

Agent evaluation pitfalls

Agent evaluations should separate model quality from scaffold, tool, and environment failures. Single-run pass rates hide nondeterminism, while overly short time or token limits can…

Useful?
anthropic.comsource ↗
OrchestrationFeatured

Multi-agent orchestration tradeoffs

Use multiple agents when subtasks are genuinely independent, require distinct tools or context, or benefit from parallel search or review; a single agent is usually cheaper, faster, and…

Useful?
anthropic.comsource ↗
Browse all 51

Stay in the loop

Turn agent ideas into working systems.

Explore the notes, follow the source material, or ask the knowledge base about the problem on your desk.