The 2026 edition · 162 breakdowns

The Agent Atlas

Every important paper on how AI agents actually get built, read closely, distilled to what a builder can use, and mapped into one navigable atlas. Architecture, memory, context, retrieval, reasoning, security, and the research the whole field stands on.

Blueprint schematic of an AI agent system: a reason-and-act loop wired to memory, tools, context and a knowledge graph.
A BlackArc field guide 162 papers 15 topics 47h of reading Self-contained · zero tracking

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Agent Architecture & Harnesses · 2023

ReAct

Let an LLM interleave free-text "thoughts" with real tool actions in a single prompt loop, and it plans, grounds itself in the world, and recovers from mistakes far better than reasoning-only or acting-only agents — this is the paper that defined the agent loop you already use.

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01

Agent Architecture & Harnesses

The loop, the harness, and the plumbing that turns a model into a working agent.

Papers
18
Read time
4.9h
02

Memory Systems

How agents retain, recall, and reflect across long-running work.

Papers
10
Read time
2.7h
03

Context Engineering

Packing the right tokens into the window: retrieval, compression, and ultra-long context.

Papers
7
Read time
2.3h
04

Multi-Agent Systems

Orchestration, collaboration, roles, and why teams of agents succeed or fail.

Papers
8
Read time
2.1h
05

Reasoning & Test-Time Compute

Chains, trees, atoms, and System-2 thinking that trade compute for correctness.

Papers
8
Read time
2.3h
06

Self-Improving Agents

Agents that evolve their own prompts, skills, and harnesses from experience.

Papers
20
Read time
6.0h
07

Retrieval & RAG

Grounding generation in external knowledge, from classic RAG to reasoning retrieval.

Papers
5
Read time
1.4h
08

Knowledge Graphs

Graph-structured memory and retrieval for agents that need to connect facts.

Papers
6
Read time
1.7h
09

Security & Safety

Prompt injection, access control, guardrails, and the risk surface of autonomous agents.

Papers
16
Read time
4.6h
10

Evaluation & Benchmarks

Judging agents honestly: benchmarks, LLM-as-judge, and outcome measurement.

Papers
6
Read time
1.7h
11

Reinforcement Learning

Training agents end-to-end with rewards, from GRPO to deployment loops.

Papers
7
Read time
2.1h
12

Manufacturing & Supply Chain

Agents on the shopfloor and across the supply network: scheduling, inventory, sourcing, and disruption response.

Papers
15
Read time
4.0h
13

Business Process

Agentic BPM: goal-driven process design, process mining, workflow graphs, and governing non-deterministic work.

Papers
5
Read time
1.4h
14

Applied & Industry

Agents in the real world: operations research, scientific discovery, document work, and the economics of adoption.

Papers
11
Read time
3.3h
15

Foundations & Infrastructure

The substrate: LLM internals, GPUs, serving systems, and the theory underneath.

Papers
20
Read time
6.7h

Most foundational

The papers everything else builds on

01

ReAct

Agent Architecture & Harnesses · 2023 · 16 min read

16m
02

Language Models are Few-Shot Learners

Foundations & Infrastructure · 2020 · 20 min read

20m
03

Language Models are Unsupervised Multitask Learners

Foundations & Infrastructure · 2019 · 14 min read

14m
04

Chain-of-Thought Prompting Elicits Reasoning in Large Language Models

Reasoning & Test-Time Compute · 2022 · 14 min read

14m
05

Reflexion

Self-Improving Agents · 2023 · 16 min read

16m
06

Agent Harness Engineering

Agent Architecture & Harnesses · 2026 · 22 min read

22m
07

A Survey of Context Engineering for Large Language Models

Context Engineering · 2025 · 22 min read

22m
08

Fundamentals of Building Autonomous LLM Agents

Foundations & Infrastructure · 2025 · 16 min read

16m
09

Agentic Context Engineering

Context Engineering · 2025 · 18 min read

18m
10

HippoRAG

Memory Systems · 2024 · 16 min read

16m

BlackArc Industrial

This atlas is a byproduct of the work.

BlackArc builds production AI agents for manufacturing and operations. The Agent Atlas is how we stay current: every paper here feeds what we ship. If you are putting agents into real operations, come talk to us.

Method

How this atlas was built

1

Read the papers, not the abstracts

Every entry is a close reading of one paper: the problem, what is genuinely new, how it works down to the math, and how you would actually build with it.

2

Distill to what a builder can use

Each breakdown ends where most summaries stop: pseudocode of the core idea, how to make your own version, and where it breaks.

3

Map it into one publication

162 breakdowns, sorted into 15 topics, so the whole shape of agent research is browsable in one place.