jtbd

jtbd is a skill for Claude Code from neurofoo/agent-skills. It costs 31 tokens per session (679 once invoked), scanned A, original, MIT.

A four-step method for learning a subject by explaining it simply, finding unclear parts, filling those gaps, and explaining it again. It is named after physicist Richard Feynman.

In plain words
What is it for?
It helps study technical concepts, test understanding, identify unanswered questions, and produce plain-language explanations.
Why use it?
It reveals when an explanation depends on vague wording or knowledge that has not really been understood. Reworking those gaps leads to clearer, more reliable understanding.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

Part of the learning-skills plugin — 3 skills, 7 commands shipped together

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 skills/neurofoo/agent-skills/jtbd
Any agent
npx skills add neurofoo/agent-skills --skill jtbd
Clone the repo
git clone --depth 1 https://github.com/neurofoo/agent-skills

Made for: Claude Code.

Or install learning-skills, the plugin that ships this one along with the rest of its 3 skills, 7 commands.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for jtbd

README.md
[![agentmods](https://agentmods.dev/badge/skills/neurofoo/agent-skills/jtbd.svg)](https://agentmods.dev/skills/neurofoo/agent-skills/jtbd)
Your own site
<a href="https://agentmods.dev/skills/neurofoo/agent-skills/jtbd"><img src="https://agentmods.dev/badge/skills/neurofoo/agent-skills/jtbd.svg" alt="Measured on agentmods" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 679 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 5.1 $0.00031 $0.00679
Opus 5 $0.00015 $0.00340
Sonnet 5 $0.00006 $0.00136
Haiku 4.5 $0.00003 $0.00068

Measured 6d ago against content hash 6bd538ee2fb0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

jtbd 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 6d ago.

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.

jtbd/SKILL.md · 122 lines

How it starts

The opening of the file, as written. The whole thing — 122 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Jobs to Be Done Analysis

Analyze a product, feature, or situation through the Jobs to Be Done framework to understand what customers really want.

Instructions

Identify the underlying jobs customers are trying to accomplish, including functional, emotional, and social dimensions. Consider the full context of when and why they "hire" solutions.

Output Format

Subject: [Product/feature/situation being analyzed]


The Context

When does the job arise? [Describe the triggering situation or circumstance]

Who has this job? [Customer segments or personas]

How are they currently solving it? [Existing solutions, competitors, or workarounds]


Job Statement

Core Job

When [situation], I want to [motivation], so I can [expected outcome].


Job Dimensions

Functional Job

The practical task they're trying to complete

Job Importance Current Solution
[functional job 1] High/Med/Low [how they do it now]

Emotional Job

How they want to feel

Feeling They Want Feeling They Want to Avoid
[positive emotion] [negative emotion]

Social Job

How they want to be perceived

How They Want to Be Seen By Whom
[perception] [audience]

Forces Analysis

Forces pushing toward change

Force Strength
Push: Frustration with current solution [description]
Pull: Attraction of new solution [description]

Forces resisting change

Force Strength
Anxiety: Fear about new solution [description]
Inertia: Comfort with current way [description]

Compensating Behaviors

What workarounds do people use when no good solution exists?

Workaround Why They Do It What It Reveals
[behavior] [reason] [insight]

Competitive Alternatives

Read the full file on GitHub · 122 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 6d ago First seen · 122 lines · 31 tokens per session scan A 6bd538ee2fb0

Subscribe to this mod's changes

jtbd is a skill published in the GitHub repository neurofoo/agent-skills (111 stars, last pushed 7mo ago), licensed MIT. It adds 31 tokens to every session and 679 once invoked, about $0.0002 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 2026-08-30.

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