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Agent skill

Ink Case

by jeremylongshore in jeremylongshore/tons-of-skills-marketplace

Write customer case studies and success stories — interview guide, story structure, and publish-ready case study with metrics.

MITAuto-check: notesSales & Support

Install Ink Case

skills CLI
$ npx skills add jeremylongshore/tons-of-skills-marketplace --skill ink-case -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install jeremylongshore/tons-of-skills-marketplace ink-case --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/jeremylongshore/tons-of-skills-marketplace.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ai-agency/tonone/skills/ink-case .claude/skills/ink-case && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
ink-case
GitHub stars
2.8k
Token cost
~1.3k tokens
SKILL.md length
340 words
Files
1
Skills in repo
3,342
Repo updated
First seen
Licence
MIT

At a glance

Write customer case studies and success stories — interview guide, story structure, and publish-ready case study with metrics.

  • Works in 6 steps: Validate the Story → Customer Interview Guide → Story Structure → …
  • Asked to write a case study
  • SKILL.md covers Steps and Delivery
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Ink Case is an agent skill from jeremylongshore/tons-of-skills-marketplace. Write customer case studies and success stories — interview guide, story structure, and publish-ready case study with metrics. Use when asked to "write a case study", "document a customer success story", "create social proof content", or "write about how [customer] uses the product".

Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Sales & Support, covering Storytelling, Marketing psychology and Customer success. The repository describes itself as: Model-agnostic agent-skills platform with a harness-free canonical layer, verified adapters, and the ccpi package manager. Explore at tonsofskills.com. The licence is MIT.

When your agent uses it

  • Asked to write a case study
  • Document a customer success story
  • Create social proof content
  • Write about how [customer] uses the product

Example prompts

  • “write a case study”
  • “document a customer success story”
  • “create social proof content”
  • “/ink-case”

Requirements

  • Pre-approved tools (allowed-tools): Read, Bash, Glob, Grep, AskUserQuestion

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Validate the Story
  2. Customer Interview Guide
  3. Story Structure
  4. Write the Case Study
  5. Case Study SEO
  6. Produce Final Assets

What it can do on your machine

Read from SKILL.md and the folder at commit cfae287. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves these tools, so the agent can use them without asking each time:

    • Read
    • Bash
    • Glob
    • Grep
    • AskUserQuestion

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Ink Case loads about 1.3k tokens when it runs. Until then it costs about 73 tokens; SKILL.md has 340 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~73
When it runs · the whole SKILL.md, loaded when a task matches
~1.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check: notes

The automated check noted patterns worth knowing about, such as sudo or a known installer.

  • NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
    allowed-tools: Read, Bash, Glob, Grep, AskUserQuestion

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from jeremylongshore/tons-of-skills-marketplace at commit cfae287, republished under its MIT licence (© jeremylongshore). 340 words, ~1,282 tokens.

Download SKILL.mdSave it as .claude/skills/ink-case/SKILL.md (or your agent's skills folder).
name
ink-case
description
Write customer case studies and success stories — interview guide, story structure, and publish-ready case study with metrics. Use when asked to "write a case study", "document a customer success story", "create social proof content", or "write about how [customer] uses the product".
allowed-tools
Read, Bash, Glob, Grep, AskUserQuestion
version
0.1.0
author
tonone-ai <hello@tonone.ai>
license
MIT

Case Study and Customer Story

You are Ink — the content marketing engineer on the Product Team. Write case studies that convert prospects — not testimonials that collect dust.

Steps

Step 0: Validate the Story

Before writing:

  • Customer approval confirmed? (mandatory — never publish without written OK)
  • Metrics available? ("they saw improvement" is useless — need numbers)
  • Is this the right customer profile for ICP? (the story must resonate with who you want to sell to next)
  • Champion willing to be quoted? (named quotes with role and company are 10x more powerful than anonymous)

If no metrics, push for specifics: "What would you have needed to hire instead?", "How long did this take before?", "How many hours/week does this save?"

Step 1: Customer Interview Guide

If interviewing the customer, use this guide:

Context and before:
1. "What was happening in your company when you started looking for a solution like this?"
2. "What were you doing before? What was broken about it?"
3. "How much time/money/risk was that costing you?"
4. "What other solutions did you evaluate?"

Decision:
5. "Why did you choose [Product]? What made it obvious?"
6. "Was there anything that almost made you choose something else?"

After:
7. "Walk me through what happened after you got started."
8. "What was the first thing that made you think 'this was worth it'?"
9. "What would you tell someone who was in your situation 6 months ago?"

Metrics:
10. "Can we put any numbers to the impact? Time saved, cost reduced, revenue or risk affected?"
Step 2: Story Structure

Use the StoryBrand structure — customer is hero, product is guide:

Before — The problem
"[Customer name] was [specific situation]. [Pain they experienced — concrete, not abstract].
Every [time period], they had to [tedious/broken/risky thing]. It wasn't sustainable."

Trigger — Why they changed
"When [trigger event], [customer] knew they needed a different approach."

Discovery — Finding the product
"They found [Product] while [looking for X / via Y]. What caught their attention was [specific thing]."

Implementation — Getting started
"Getting started took [N days/hours]. [One thing that stood out about setup]."

Results — The outcome
"[N] weeks later, [Customer] [specific outcome]. [Metric 1]. [Metric 2]. [Quote from champion]."

Future — What's next
"[Customer] is now [next step / expanding use]. '[Quote about why they recommend it].' — [Name, Role, Company]"
Step 3: Write the Case Study

Format A — Full case study (800-1,200 words) Full StoryBrand narrative. Used on dedicated case study page, in sales enablement.

Format B — One-page spotlight (300-500 words) Compressed version with metrics box. Used in proposals, in product pages.

Format C — Quote card (50-100 words) Pull quote + metrics + headshot + logo. Used in homepage social proof section.

Produce all three formats from the same story research.

Step 4: Case Study SEO

Title should target commercial intent:

  • "How [Company] [achieved outcome] with [Product]"
  • "[Product] Case Study: [Outcome] for [Company type]"
  • "From [before state] to [after state]: [Company]'s story"

Include in the case study:

  • Company name and logo (with approval)
  • Industry and company size
  • Use case / product area
  • Measurable results (in a highlighted metrics box)
  • Named quote with role and photo (with approval)
  • CTA: "See how [Product] can do this for your team"
Step 5: Produce Final Assets

Deliver:

## Case Study: [Customer Name]

### Snapshot (for homepage/sales deck)
Company: [Name] | Industry: [X] | Size: [N employees]
Result: [Primary metric] | Time to value: [N days]
"[Best quote]" — [Name, Title]

### One-Page Spotlight
[300-500 words]

### Full Case Study
[800-1,200 words with StoryBrand structure]

### Approval Checklist
[ ] Customer has approved all metrics published
[ ] Customer has approved all quotes
[ ] Customer has approved company name and logo use
[ ] Customer has reviewed final draft
[ ] Publication date agreed

### Distribution Plan
- Add to /case-studies page
- Feature in sales proposal template
- Add to relevant landing pages as social proof
- Share as [customer name] announcement on social (if customer agrees)
- Include in next newsletter

Delivery

Produce all three formats (full, spotlight, quote card) and the approval checklist. Every piece must be publish-ready — no placeholder metrics or "TBD" sections.

Follow the output format defined in docs/output-kit.md — 40-line CLI max, box-drawing skeleton, unified severity indicators, compressed prose. If output exceeds 40 lines, delegate to /atlas-report.

© jeremylongshore, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in plugins/ai-agency/tonone/skills/ink-case of jeremylongshore/tons-of-skills-marketplace.

Open the folder on GitHubat commit cfae287

Compare with similar skills

Ink Case next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Ink Case compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Ink Case this skilljeremylongshore/tons-of-skills-marketplace2.8k—~1.3kAutomated safety check: NotesMIT
Customer Story Buildergooseworks-ai/goose-skills1.2k1 repos~1.7kAutomated safety check: PassMIT
Customer Story Writerzapier/gtm-cheat-codes342—~438Automated safety check: PassMIT
Behind The Scenes And Foundersocial-media-skills/skills134—~2.2kAutomated safety check: PassMIT
User Generated Contentvivy-yi/xiaohongshu-skills481—~6.9kAutomated safety check: PassNone
Social Proof And Testimonialssocial-media-skills/skills134—~1.9kAutomated safety check: PassMIT

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    342 GitHub stars~438 tokensUpdated 2 mo ago
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Categories

Questions about Ink Case

What does Ink Case do?

Write customer case studies and success stories — interview guide, story structure, and publish-ready case study with metrics. Ink Case is an agent skill from jeremylongshore/tons-of-skills-marketplace. Write customer case studies and success stories — interview guide, story structure, and publish-ready case study with metrics.

When should I use Ink Case?

Ink Case fits situations like: asked to write a case study; document a customer success story; create social proof content; write about how [customer] uses the product.

How do I install Ink Case in Claude Code?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill ink-case -a claude-code`. Or copy the skill folder (plugins/ai-agency/tonone/skills/ink-case in jeremylongshore/tons-of-skills-marketplace) into .claude/skills/ink-case in your project. Claude Code loads it when a task matches its description.

How do I install Ink Case in Codex?

Run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill ink-case -a codex`. Or copy the skill folder (plugins/ai-agency/tonone/skills/ink-case in jeremylongshore/tons-of-skills-marketplace) into .agents/skills/ink-case in your project. Codex loads it when a task matches its description.

Can I use Ink Case in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add jeremylongshore/tons-of-skills-marketplace --skill ink-case -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/ink-case, .gemini/skills/ink-case, .github/skills/ink-case and .opencode/skills/ink-case in your project.

What does Ink Case need to run?

SKILL.md names no scripts, command-line tools or credentials: Ink Case is instructions for the agent only. Its frontmatter pre-approves these tools: Read, Bash, Glob, Grep, AskUserQuestion.

Does Ink Case access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Ink Case safe to install?

Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.

What licence does Ink Case use?

Ink Case is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Ink Case use?

About 1.3k tokens (SKILL.md is roughly 5.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Ink Case?

Skills that share tags, products or a category with Ink Case: Customer Story Builder (gooseworks-ai/goose-skills, 1.2k stars), Customer Story Writer (zapier/gtm-cheat-codes, 342 stars), Behind The Scenes And Founder (social-media-skills/skills, 134 stars) and User Generated Content (vivy-yi/xiaohongshu-skills, 481 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Ink Case?

jeremylongshore (a GitHub user) maintains it in jeremylongshore/tons-of-skills-marketplace, which has 2,827 GitHub stars. The repository holds 3,342 skills in this directory. The repository was last updated on October 10, 2026.

Source: jeremylongshore/tons-of-skills-marketplace on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.