Resources / agentic system design 01

The POC Selection Tool

Score an agent proof of concept before you build it, and find out whether it can reach production. Twelve questions in four short steps. Each one says what earns a 0, a 1 and a 2, so two people scoring the same idea land on the same number.

12 questions · 4 sections · maximum 24 · one hard gate

Built by Sunil Mathew, co-authored with Claude

From The Living Craft, practical learning and consulting with Sunil Mathew. Explore the programmes

0/24
Not started 12 questions to answer. A blank counts as 0.
A 0/6 B 0/6 C 0/6 D 0/6
Step 1 of 6 · 0 of 12 answered
Six steps. About ten minutes.
01 What this tool is for
  • You have an idea for an AI agent. Before anyone builds it, this tool tells you whether it can reach production.
  • Twelve questions in four sections. Each answer scores 0, 1 or 2. The maximum is 24.
  • Section B is a hard gate. A 0 on any of its three questions stops the proof of concept, whatever the total.
  • The result is one of three outcomes: pilot candidate, narrow it and score again, or a demo rather than a pilot.
02 How to use it
  1. Pick one proof of concept. Score one at a time.
  2. Work through the four sections with Next and Back. Each has three questions.
  3. For each question, choose the answer that is true today, not the one that is planned. The page moves to the next question for you.
  4. Watch the score bar and the progress bar. Both stay at the top and update as you answer.
  5. Read the result at the end. It gives the outcome and what to fix first.
  6. Download the tool as an Excel workbook to score the next one offline. The PDF of your scored copy is at the end.
03 Rules for scoring in a room

Five rules that decide whether this is useful or theatre.

  1. Score what is true today. "We will build that in the pilot" scores 0. The tool measures readiness, not intent. This one rule decides whether the exercise is useful or theatre.
  2. Score alone, then compare. Read the question aloud. Each person picks a number before anyone speaks. Talking first pulls the room toward the loudest voice.
  3. A two-point gap is the finding. If one person scores a question 0 and another scores it 2, the team does not agree on what the system is. Settle that before moving on. It is worth more than the total.
  4. A blank is a 0. If nobody in the room can answer, nobody knows. Not knowing is what the question measures.
  5. Change the scope, not the argument. The right way to raise a score is to narrow what the proof of concept does, then score it again.
Step 2 of 6
A

Task fit

Is this task shaped for an agent?

0/6

Three questions about the work itself. These fail quietly: nobody notices until the evaluation has nothing to measure against.

01

The task happens in much the same shape hundreds of times a month.

Repetition pays for the build. Work that is rare, or different every time, never earns back the cost of evaluation and review.

02

You can write down the full list of actions the agent may take, and the list is short.

An open-ended list means open-ended damage, and no reviewer can approve it. Count the actions before you count the features.

03

A record of the correct outcome exists somewhere you can test against.

Closed tickets, ledger entries, past decisions. Without a record of the right answer there is no evaluation, and the demo stays the only evidence you have.

0 of 3 answered in this step
Step 3 of 6
B

Failure containment

Can you survive it being wrong?

Hard gate 0/6

Three questions about what happens when the agent makes a mistake. This is the hard gate: a 0 on any question here stops the proof of concept, whatever the total.

04

The worst single action it can take can be undone, or a human must approve it first.

Refunds, emails, deletes, commitments. The common failure is a tool call that times out instead of failing. The system does not know whether the action happened, retries, and does it twice.

05

Someone catches a wrong answer before it reaches a customer, a regulator or a ledger.

A wrong answer nobody sees is the expensive kind. If nothing downstream catches it, your evaluation is the only defence, and it will not be enough in week one.

06

A named person can stop it within minutes, and you can work out afterwards why it acted.

A kill switch nobody owns is not a kill switch. A trace you cannot replay is not an audit trail.

0 of 3 answered in this step
Step 4 of 6
C

Evaluation evidence

Will you be able to prove it worked?

0/6

Three questions about the proof. Decide these before the build. A baseline cannot be measured after the agent has changed the work.

07

You know what this task costs today: time, money and error rate.

Without a measured starting point, "better" is an opinion. The pilot review becomes an argument about stories.

08

You can produce the hard cases today: missing information, conflicting history, two near-identical requests at once.

A demo never contains these cases. Production contains them every hour. If you cannot collect them now, you will not collect them under launch pressure.

09

You can test what it does when a tool returns neither success nor failure.

Timeouts, partial writes, a confident wrong response. Most agent incidents start here, and almost no proof of concept tests it.

0 of 3 answered in this step
Step 5 of 6
D

Ownership and unit economics

Will the organisation keep it alive?

0/6

Three questions about the people and the money. A pilot that never leaves pilot usually has an ownership problem, not a tooling problem.

10

One named business owner, not a committee, has a number that improves if this works.

If nobody's metric moves, nobody defends the budget at the next planning round. The pilot quietly ages out.

11

The data it needs is in systems you can call today.

If a data programme has to finish first, that programme is the real project, and it is six months long. Say so now.

12

Your cost estimate includes tool calls, retries and human review minutes, not only the model bill.

At a hundred times the volume, the model is usually the smallest line. Human review is usually the largest, and it grows in step with volume.

0 of 3 answered in this step
Step 6 of 6
04 Your result

The outcome, read against the rubric.

0/24 Not started

Answer all 12 questions to read the outcome. Until then this shows the running total, and a blank counts as 0.

05 The rubric

Agree these before you score, not after.

A total one point above a line is a narrow, not a yes. The row that matches your result is highlighted.

Any 0 in B
Hard stop, whatever the total
A high score elsewhere does not buy back an action you cannot undo. Fix the reversibility, the review step or the stop control first, or pick a different proof of concept.
20–24
Pilot candidate
Write the boundary down: who can use it, what it may do, which actions need review, and who can stop it. Then run a limited trial against that boundary.
14–19
Narrow it, then score again
The action list is usually too wide. Remove permitted actions until the low-scoring rows move. A smaller agent that ships beats a broad one that stalls.
0–13
A demo, not a pilot
Not a bad idea. A bad first idea. Build it to learn if you want, but keep it off the roadmap and away from customers.
06 Before you build

Four ways to answer most questions before you build the agent.

Listed from cheapest to most expensive. Each one costs less than a pilot that fails in front of a customer.

01

Write the evaluation set before the spec

Ask for 50 real cases from last quarter with known-correct outcomes. Recorded cases, not invented ones. If the team cannot collect 50 in a week, that is not a scheduling problem. The task has no ground truth, and an agent you cannot grade is an agent you cannot ship. Failing to produce the set is the answer.

Cost: One week, no code Answers 03 · 08
02

Let a person play the agent first

Before building anything, route real requests to a person. They sit behind the same interface the agent would use, follow the same rules, and use the same tools. You learn the real mix of requests, which ones have no clean answer, and whether anyone uses the thing at all. After two weeks you hold a labelled evaluation set you did not have to invent. If the flow is customer-facing, check the disclosure question with legal first.

Cost: One person, two weeks Answers 01 · 02 · 10
03

Break the tools on purpose

In staging, make a tool time out instead of failing. Make it return success for an action that never happened. Make it return the wrong answer, confidently. Chaos engineering has been standard for services for twenty years and is almost unknown for agents. That is odd, because this is exactly where agent incidents start.

Cost: One day to build the harness Answers 04 · 09
04

Run it in shadow mode

Put it on live traffic and forbid it from acting. Log what it would have done, compare that with what the human did, and review only the disagreements. Those are usually a small share of the cases and hold all of the information. You get a real accuracy number with no risk of harm.

Cost: A logging path and reviewer time Answers 05 · 07
→ Where this comes from

The score is the easy half. The argument is the other one.

A blank scorecard is useful and costs nothing to give away. What it cannot do on its own is settle the rows where two people scored two points apart. That is where the real disagreement about the system lives, and that part takes a room.

Test the idea before you widen the pilot. Explore Architecting Agentic AI Systems: 30 live hours with Sunil Mathew; confirm complete setup and pre-session preparation before joining.

Test the idea before you widen the pilot. Explore Architecting Agentic AI Systems: 30 live hours with Sunil Mathew; confirm complete setup and pre-session preparation before joining. Request a fit call at https://learning.thelivingcraft.ai/programmes/agentic-systems/architecting-agentic-ai-systems/#discuss-architecting-agentic-ai-systems

Published 13 September 2026 · free to use and to pass on

File Download

Get the file

The Excel workbook is the tool itself, blank: the twelve questions, their anchors and the rubric, scored the same way as this page. The PDF carries your twelve answers, the score, the outcome and what to fix first, and is checked before it is handed over. It is built against a name, a role and an email address.

This file is the same for everyone. Nothing you typed goes into it. Your address is used to send you this resource once. It does not start any other email.