utility-mermaid-diagrams SKILL.md skillA

utility-mermaid-diagrams from product-on-purpose/pm-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add product-on-purpose/pm-skills/utility-mermaid-diagrams@v1.1.0

Pins v1.1.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
product-on-purpose/pm-skills
Path
skills/utility-mermaid-diagrams/SKILL.md
Versions recorded
5
Latest version
v1.1.0, committed Jul 6, 2026
First version recorded
Apr 8, 2026
Size
6,498 bytes
Repository stars
790
License
Apache-2.0

Teaches PMs to create syntactically valid mermaid diagrams by selecting the right diagram type for their communication need, following syntax validity rules, and validating before shipping. Covers all 15 mermaid diagram types with PM-relevant examples and a dual-lens navigation system.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

<!-- PM-Skills | https://github.com/product-on-purpose/pm-skills | Apache 2.0 -->

# Mermaid Diagrams

Create effective, syntactically valid mermaid diagrams for product documents.

## When to Use

- Creating mermaid diagrams for PRDs, specs, roadmaps, or stakeholder presentations
- Choosing which of 15 diagram types fits a specific communication need
- Debugging mermaid code that won't render or renders incorrectly
- Reviewing diagrams for clarity, accuracy, and accessibility

## When NOT to Use

- Exporting diagrams to image files (PNG/SVG) - that's a rendering tool concern
- Using non-mermaid diagramming tools (Figma, Lucidchart, draw.io)
- Creating purely decorative visuals with no informational purpose
- Producing a full customer-journey artifact (stages, touchpoints, emotional curve, pain points) rather than a standalone diagram - use `discover-journey-map`, which composes this skill for its timeline or flowchart section

## The Cardinal Rule

> Don't diagram what a list can say.

Diagrams earn their place when they reveal **relationships**, **branching**, or **flow** that prose flattens. Before creating any diagram, ask:
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add product-on-purpose/pm-skills/utility-mermaid-diagrams@sha256:aeb8d8462f02be1c

The line at the top of this page pins the label v1.1.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_y5qsb73whfyvrs4w.svg)](https://markdownregistry.com/a/art_y5qsb73whfyvrs4w)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 5 versions of this file, between Apr 8, 2026 and Jul 6, 2026, about one every 22 days.

versioncommittedcommitsizeaudit
v1.1.0 latest2026-07-06 fa0111e 6,498 BA view · diff
v1.0.02026-06-10 b8ccff6 6,274 BA view · diff
v1.0.02026-05-20 be1352b 6,274 BA view · diff
v1.0.02026-04-23 8ab0f81 6,268 BA view · diff
v1.0.02026-04-08 06af8fb 6,308 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (6498 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

product-on-purpose/pm-skills · 790 stars · license Apache-2.0 · pushed 2026-11-03 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_y5qsb73whfyvrs4w
GET https://markdownregistry.com/api/v1/resolve?ref=product-on-purpose/pm-skills/utility-mermaid-diagrams
GET https://markdownregistry.com/api/v1/blob/aeb8d8462f02be1ca2fc474a0b14025fe6d3213c6a2c3d795a6ca29f924b985a

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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Every file in product-on-purpose/pm-skills

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