Day 11Week 4 · Scale week

Day 11 — Agents managing agents

The last skill of the course: putting your two agents in roles — one builds, the other reviews — and seeing how far that idea scales. It scales further than you think: the course you're sitting in is built this way.

Today's goal

Run a real builder + reviewer cycle on your own capstone — Codex builds, Hermes reviews — then use the pattern in the clinic to close your project's remaining gaps before demo day.

You need: your feature-complete capstone from last night · both agents · your DONE WHEN scorecard.

Block A Builder + reviewer: your first agent team One agent's confident blind spots are another agent's easy catches. You'll have Hermes review Codex's work on your capstone — with a written review order, not a vague “check this”.

Why two agents beat one: an agent reviewing its own work re-reads its own reasoning and nods along — the same blindness humans have. A different agent, with different training and no attachment, reads the actual files. The pattern is old (writers/editors, pilots/co-pilots); the price is new: your second reviewer is already on your subscription — a review spends some of your quota, not extra money.

1

Commission the review — like a job order

In Hermes, pointed at your my-tool folder:

PROMPT — copy & paste into Hermes
You are the reviewer for this project. Codex built it; you did not — read it with fresh eyes.

Review against spec.md and AGENTS.md: 1) does every DONE WHEN check truly pass — test them; 2) what breaks with hostile input (empty fields, huge numbers, wrong types); 3) anything a first-time user would find confusing.

Output: a numbered list, most serious first, each item with WHERE and HOW TO REPRODUCE. Do not fix anything — reviewers report, builders fix.

Step done when: you hold a numbered findings list. (An empty one means the review order was too soft — tighten and rerun.)

2

Send the findings back to the builder

In Codex, same folder:

PROMPT — copy & paste into Codex
A reviewer examined this project and reported the findings below. Address them one at a time: for each, tell me your fix, apply it, and I'll verify before you move to the next.

[paste Hermes's findings]

Notice your own role change: you're not building and you're not reviewing — you're routing work between specialists and approving results. There's a word for that job: managing.

✦ Two agents, one review cycle, and your project just got better while you mostly read and nodded. Remember this feeling — it's the whole next section.

Step done when: the top findings are fixed and verified, one by one.

Block B How far it scales — and your clinic The patterns behind agent teams, the true story of how this course is produced, a glimpse of the one-person company — then the rest of the time is yours: the capstone clinic.

A true story, from inside this course. These lesson pages are produced by an agent team: one agent (Claude) designs the curriculum and writes specs and content; another (Hermes — yes, the same one on your laptop) executes bulk work like translations from written task files; a human reviews what lands on disk and routes corrections. The task files look like this:

Read it again with today's eyes: it's a skill (Day 4) written as a job order, with guardrails and a report (Day 7), executed by a second agent and verified by a human (Day 1's pipeline, forever). Every course concept, stacked.

The one-person company, role by role. Click each card — this is theory today and someone's Tuesday next year.

🧭 Director
🔨 Builders
🔍 Reviewers
Operations

That's the honest shape of the “agentic corporation” — not science fiction, just today's four patterns run permanently. The bottleneck isn't the agents; it's how well the director specifies and verifies. Which is precisely what you've trained for eleven days.

Choosing models — the director's other skill

Different models have different characters, and a director casts them like actors. From our lab's daily experience:

  • GPT-5.5 (inside your Codex and Hermes) — exceptional at code and mechanical execution; noticeably weaker when the output is prose that people will read.
  • Claude models — often the stronger writers and planners. Our lab drafts curricula, texts, and specs with Claude, then hands the building to GPT-5.5. This course is made exactly that way.
  • Free chat models — fine for research, brainstorming, and rough drafts, and they cost none of your agent quota.

The habit: notice HOW each model answers, not just THAT it answers. Code from the coder, words from the writer — pairing one of each is the most common two-agent team in the wild.

3

The clinic — close your gaps

Rest of the session: your capstone, with help in the room. Work the list in this order:

  1. Any DONE WHEN check still failing → fix with the builder+reviewer cycle.
  2. The first-time-user test: swap laptops with a neighbor, watch them use your tool cold, say nothing, take notes. Their confusion is your polish list.
  3. Cosmetics last — one design-ritual pass (Day 2) if time allows.

Step done when: your scorecard says all checks pass AND a stranger used your tool without asking you anything.

Homework ≈ 30 minutes + the last reading
Tonight — demo prep

Tomorrow you present. Two minutes, three beats, no slides — your software speaks.

Time estimate: 30m
  1. Open the article →
Done when:
  • The demo fits in 2 minutes, twice in a row.
  • The "demo day" checkpoint exists.
Short on time? Skip polish entirely. Rehearse the 2 minutes and make the checkpoint — a rough tool demoed well beats a polished tool demoed badly.
Day complete?

Review cycle run · gaps closed · demo rehearsed · checkpoint made

Tick when the homework above is finished — it syncs to your account.

Self-checkAnswer first, then reveal

Three quick checks

Why is a second agent a better reviewer than the builder agent reviewing itself?

Self-review re-reads its own reasoning and agrees with it. A different agent has no attachment and different blind spots — it tests the files, not the intentions. Same reason newspapers have editors who didn't write the article.

In the builder + reviewer cycle, what exactly is YOUR job?

Routing and judgment: commission the review, hand findings to the builder, verify each fix, decide when it's done. Specify and verify — the pipeline's human half, now applied to a team instead of one agent.

What's the real bottleneck of a one-person agentic company?

The director's clarity. Agents multiply execution, not judgment: vague specs produce confident garbage at scale, and unverified results compound. The scarce skill is exactly what this course trained — precise orders and honest checking.

What you can do now
  • Run a builder + reviewer cycle across two agents.
  • Write review orders that produce findings, not compliments.
  • See the four roles of an agent team — and name yours.
  • Walk into a demo with a rehearsed 2 minutes and a safe checkpoint.
Tomorrow: demo day. You, your software, two minutes. Twelve days ago you installed an app; tomorrow you present a product you specified, built, reviewed, and shipped. Sleep well — the checkpoint's got you.