For developers running agent harnesses

Stop babysitting your AI. Start shipping with it.

The Deck is the map — how long-running agents actually work, free and open. The Harness Starter Kithands you the founder’s real harness so you can build that way today.

270
files in one run
59 min
unattended
exit 0
clean finish
The problem

You’re still babysitting the agent.

The demos look like magic. Real work looks like you, hunched over the terminal, steering a model that loses the plot the moment the task gets long.

You paste the context in again because the agent forgot the thread three steps ago.

It drifts off-task, edits the wrong file, and you catch it by hand before it compounds.

Every run starts from zero — no memory of the plan, the spec, or what already shipped.

The shift

An agent isn’t a smarter model. It’s a harness around one.

On its own, an LLM is a stateless function: text in, text out. Nothing more.

“text in”LLM“text out”

What turns that function into something that ships work is everything you wrap around it — the loop, the context you load, the tools and skills it can reach. That wrapper is the harness.

Agent · ↻ while true
user inputLLMoutput
system prompt
context mgmt
skills & tools
MCPs
sub-agents
plan mode
session persistence
permissions & hooks

This is the Deck’s whole thesis — and the part the Harness Starter Kit hands you ready to run.

The map — free

See the whole picture first.

The Deck is the map: an open, interactive walk through how long-running agents actually work. No email, no paywall — read it, share it, send it to your team.

The LLM as a functionContext is an arrayThe agent harnessCustom skillsThe Ralph loopTask selection
Read the Deck
CONTEXT WINDOW · 200K
system prompt6.3k
tool definitions9.5k
CLAUDE.md2.5k
user message0.4k
assistant1.2k
tool result3.1k
unused context
The toolkit — paid

Inside the Harness Starter Kit.

The founder’s actual agentic-coding harness — the same one behind the Deck — as reusable templates. It works today; early-access members get it at the founding price the day it ships.

custom skills

The slash-command workflows — /grill-me, /to-prd, and the rest — that wrap a recurring task into one verb.

CLAUDE.md

The project instruction sheet that grounds every agent run in your conventions and architecture.

ralph-loop script

The while-loop runner that feeds the agent its prompt and resets the context window each pass.

agent_docs templates

The durable specs, ADRs, and context docs the agent reads — so state lives on disk, not in a fragile chat.

Founding buyers also lock in founding-member status, the private build-log, and a vote on the real task the founder builds in the Screencast.

The proof

Built by someone who ships this way.

The harness in the Kit isn’t a thought experiment. It’s the setup the founder — a working CTO at Skyhost — runs on real production code every day. One unattended run, measured:

270
files in one run
59 min
unattended
exit 0
clean finish
95–99%
task-fit
Early access

No testimonials yet — and we won’t invent any.

You’d be among the first to run this harness outside the founder’s own projects. So instead of a wall of quotes, here’s what’s real: the run above, on production code at Skyhost, every day. Get early access and you’ll get the Kit at the lowest price it will ever be — and help shape what ships.

The price

Lock in the Founding price before launch.

Get early access before launch and you’ll get the Kit at $29 — the least it will ever cost. The price rises to $49at launch; that’s the only clock. No countdown, no fake deadline.

Founding priceRecommended

$29

Harness Starter Kit — rises to $49 at launch

  • The full Harness Starter Kit — yours at the founding price the day it ships
  • The Screencast, free, with lifetime access when it ships
  • Founding-member status and the private build-log
  • A vote on the real task the founder builds in the Screencast
  • 30-day, no-questions-asked refund

When the Kit ships, try it on your own work. If it doesn’t earn its place in your setup, email us within 30 days and we’ll refund you in full — no questions asked.

Questions

The honest answers.

Stop babysitting

Start shipping with your agent today.

Read the The Deck to see how it works — then get early access to grab the Harness Starter Kit at the founding price the day it ships.

Read the Deck — free