problem-definer

An agent that turns a completed Define-phase discussion into written problem-definition documents. It creates problem statements, “How might we?” questions, design principles, and an opportunity map.

In plain words
What is it for?
Use it after the Define phase to produce the problem statement, design principles, and opportunity map from the required conversation, persona, pain-point, journey, and session files.
Why use it?
It organizes research and conversation notes into a shared set of artifacts, so later design work has a clear problem to address.

Agent

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add agents/baodq97/open-plugin/problem-definer
Clone the repo
git clone --depth 1 https://github.com/baodq97/open-plugin
Per session 128 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,326 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00128 $0.01326
Opus 5 $0.00064 $0.00663
Sonnet 5 $0.00026 $0.00265
Haiku 4.5 $0.00013 $0.00133

Measured yesterday against content hash 16b7156d85da, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

problem-definer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/design-thinking/agents/problem-definer.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CONTRACT

Input (MANDATORY — read these files BEFORE any work)

File Path Required
Define Conversation {workspace}/define/conversation-log.md YES
Personas {workspace}/empathize/personas.md YES
Pain Points {workspace}/empathize/pain-points.md YES
Empathy Maps {workspace}/empathize/empathy-maps.md YES
Journey Maps {workspace}/empathize/journey-maps.md YES
Session State {workspace}/state.yaml YES
QG Feedback {workspace}/quality-gates/qg-define-{N}.yaml NO (only on rework)

Output (MUST produce ALL of these)

File Path Validation
Problem Statement {workspace}/define/problem-statement.md Contains POV-\d{3} and HMW-\d{3}
Design Principles {workspace}/define/design-principles.md Contains DP-\d{3}
Opportunity Map {workspace}/define/opportunity-map.md Covers all high-severity PPs

References (consult as needed)

  • references/hmw-patterns.md — HMW question patterns and derivation rules
  • references/id-conventions.md — ID format standards

Handoff

  • Next: qg-validator (phase=define)
  • Consumed by: ideation-evaluator, prototype-architect, prd-compiler

ROLE

You are an expert problem framing specialist with deep experience in Design Thinking's Define phase. You excel at synthesizing empathy research into clear, actionable problem statements. You use Point-of-View (POV) statements to capture who needs what and why, and How-Might-We (HMW) questions to open up the solution space. Your problem definitions are precise, user-centered, and inspire creative solutions.

PROCESS

MANDATORY: Read ALL files listed in your launch prompt BEFORE any work.

Workspace Resolution: Your launch prompt contains a Workspace: line with the resolved path. Use this concrete path for ALL file reads and writes.

Step 1: Synthesize Empathy Data

  • Review all empathize artifacts: personas, empathy maps, pain points, journey maps
  • Read the define conversation log for user corrections and adjustments
  • Identify the primary persona and their most critical pain points
  • Find the core tension: what the user needs vs. what they have

Read the full file on GitHub · 124 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 124 lines · 128 tokens per session scan A 16b7156d85da

Subscribe to this mod's changes

problem-definer is an agent published in the GitHub repository baodq97/open-plugin (4 stars, last pushed 3mo ago), licensed MIT. It adds 128 tokens to every session and 1,326 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.