You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
refine: separate agency origin from agent product definition in READMEs
Resolves the contradiction between "Agent is the model" and
"Model is the driver, Harness is the vehicle". All three language
versions now clearly distinguish: agency comes from training,
but a working agent product = model + harness.
# Learn Claude Code -- Harness Engineering for Real Agents
3
3
4
-
## The Model IS the Agent
4
+
## Agency Comes from the Model. An Agent Product = Model + Harness.
5
5
6
-
Before we talk about code, let's get one thing absolutely straight.
6
+
Before we talk about code, let's get one thing straight.
7
7
8
-
**An agent is a model. Not a framework. Not a prompt chain. Not a drag-and-drop workflow.**
8
+
**Agency -- the ability to perceive, reason, and act -- comes from model training, not from external code orchestration.** But a working agent product needs both the model and the harness. The model is the driver, the harness is the vehicle. This repo teaches you how to build the vehicle.
9
9
10
-
### What an Agent IS
10
+
### Where Agency Comes From
11
11
12
-
An agent is a neural network -- a Transformer, an RNN, a learned function -- that has been trained, through billions of gradient updates on action-sequence data, to perceive an environment, reason about goals, and take actions to achieve them. The word "agent" in AI has always meant this. Always.
12
+
At the core of every agent is a neural network -- a Transformer, an RNN, a learned function -- that has been trained, through billions of gradient updates on action-sequence data, to perceive an environment, reason about goals, and take actions. Agency is never granted by the surrounding code. It is learned by the model during training.
13
13
14
-
A human is an agent. A biological neural network, shaped by millions of years of evolutionary training, perceiving the world through senses, reasoning through a brain, acting through a body. When DeepMind, OpenAI, or Anthropic say "agent," they mean the same thing the field has meant since its inception: **a model that has learned to act.**
14
+
Humans are the best example. A biological neural network shaped by millions of years of evolutionary training, perceiving the world through senses, reasoning through a brain, acting through a body. When DeepMind, OpenAI, or Anthropic say "agent," the core of what they mean is always the same thing: **a model that has learned to act, plus the infrastructure that lets it operate in a specific environment.**
15
15
16
16
The proof is written in history:
17
17
@@ -25,7 +25,7 @@ The proof is written in history:
25
25
26
26
-**2024-2025 -- LLM agents reshape software engineering.** Claude, GPT, Gemini -- large language models trained on the entirety of human code and reasoning -- are deployed as coding agents. They read codebases, write implementations, debug failures, coordinate in teams. The architecture is identical to every agent before them: a trained model, placed in an environment, given tools to perceive and act. The only difference is the scale of what they've learned and the generality of the tasks they solve.
27
27
28
-
Every one of these milestones shares the same truth: **the "agent" is never the surrounding code. The agent is always the model.**
28
+
Every one of these milestones points to the same fact: **agency -- the ability to perceive, reason, and act -- is trained, not coded.** But every agent also needed an environment to operate in: the Atari emulator, the Dota 2 client, the StarCraft II engine, the IDE and terminal. The model provides intelligence. The environment provides the action space. Together they form a complete agent.
29
29
30
30
### What an Agent Is NOT
31
31
@@ -372,6 +372,6 @@ MIT
372
372
373
373
---
374
374
375
-
**The model is the agent. The code is the harness. Build great harnesses. The agent will do the rest.**
375
+
**Agency comes from the model. The harness makes agency real. Build great harnesses. The model will do the rest.**
376
376
377
377
**Bash is all you need. Real agents are all the universe needs.**
0 commit comments