M

Mermaid Inline

dazebug/mermaid-inline · v0.1.3 · Development & Workflow

by dazebugScan grade: caution

Draws the Mermaid diagrams in Claude Code replies right in the terminal, as pictures in Ghostty, cmux and kitty and as Unicode box drawing in other terminals

Protect this install with HOL Guard

Guard checks the skills and MCP servers a plugin adds on your machine and asks you before a risky action runs. The scores above are free, and no plan changes them.

Is Mermaid Inline a fit?

From the plugin's manifest and HOL's scan. Anything the plugin does not declare is shown as not declared.

Works with

  • Claude Code

Before you install

Sign-in
Not declared
Settings it asks for
How to show diagrams, Tell Claude it can draw diagrams, Diagram theme, Color overrides and 6 more
Declared access
Not declared
License
MIT

Check before relying on it

  • Some security checks did not finish: HOL plugin scan. See the evidence
  • 3 medium findings from the scan. See the evidence
  • The publisher has not verified ownership on HOL.

What is Mermaid Inline?

Mermaid Inline is a published development & workflow plugin for AI coding agents in the Claude Code ecosystem, developed by dazebug and distributed through the HOL AI plugin registry. Draws the Mermaid diagrams in Claude Code replies right in the terminal, as pictures in Ghostty, cmux and kitty and as Unicode box drawing in other terminals.

Canonical slug
dazebug/mermaid-inline
Version
v0.1.3 · updated Oct 9, 2026

Registry snapshot

Owner verification
Not verified
Scanner
Registry fallback scan
Security result
Caution
Digest verified
Yes

Trust and security

Trust & reputation

65

HOL Trust Score

Per-metric points (0–100 each) combined via a weighted average into the overall score.

Installability
64/100
Maintenance
100/100
MCP server setup
100/100
Plugin Security
64/100
Provenance
70/100
Publisher Quality
75/100

Provenance

Plugin root
.
Source repo
https://github.com/dazebug/mermaid-inline
Source commit
95fe13c4ed4e…
Publisher verified
No
Owner verified
Not owner verified

Continuous scanner CI not detected

This plugin remains listed. Its overall trust score is reduced by 10% because security checks are not maintained in the source repository's CI.

Optional: maintain the scanner in the source repository's CI to receive the full trust score. Listing does not require that change.

README badge not detected

Plugin owners can add the HOL badge to the repository README from Guard Plugins. Distribution, not security evidence. It adds a 2% engagement adjustment to the overall trust score and never changes the security result.

Caution
Security result
64
Security score
0
High findings
Provider
registry-broker-fallback
Grade
D · caution
Version
Unknown
cisco-skill-scanner: not_applicable

Published advisories

None matched in GitHub security advisories, checked . This covers published advisories only, not problems nobody has reported.

GitHub security advisories are those the source repository has published.

Findings

mediumpublishabilitypublishability.link.missing.websiteURL

websiteURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.privacyPolicyURL

privacyPolicyURL should be present for marketplace readiness.

mediumpublishabilitypublishability.link.missing.termsOfServiceURL

termsOfServiceURL should be present for marketplace readiness.

Install guidance

Install in Claude Code

Install through the Claude Code plugin marketplace.

Claude Code plugin docs

Optional: install HOL Guard for Claude Code first, so it can check this plugin's tools on your machine before Claude Code uses them.

  1. 1

    Add the marketplace

    Run this inside a Claude Code session. It registers the marketplace manifest shipped at the repository root. If the repository ships none, add the generated entry from the Advanced section below first.

    claude code
  2. 2

    Find the marketplace and plugin names

    The install id is <plugin-entry>@<marketplace-name>, and the marketplace name is declared inside the manifest — it can differ from the repository name. List registered marketplaces to read both names.

    shell
  3. 3

    Install the plugin

    Substitute the plugin entry name and the marketplace name shown by the previous step.

    claude code

Did setup work in Claude Code?

No setup reports for Claude Code yet. Self-reported by signed-in visitors. Copying a command is not counted, and most installs are never reported.

Attested installs: Fewer than 10 attested installs of this plugin in week 2026-W43, so no number is shown. Counted from opt-in HOL Guard install reports, once per machine and runtime, and never mixed with the answers above. How install reports work.

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Plugin manifest

{
  "name": "mermaid-inline",
  "displayName": "Mermaid Inline",
  "version": "0.1.3",
  "description": "Draws the Mermaid diagrams in Claude's replies: as pictures in Ghostty, cmux and kitty, and as Unicode box drawing in other terminals",
  "author": {
    "name": "dazebug",
    "url": "https://github.com/dazebug"
  },
  "homepage": "https://github.com/dazebug/mermaid-inline",
  "repository": "https://github.com/dazebug/mermaid-inline",
  "documentationUrl": "https://github.com/dazebug/mermaid-inline#readme",
  "supportUrl": "https://github.com/dazebug/mermaid-inline/issues",
  "privacyPolicyUrl": "https://github.com/dazebug/mermaid-inline#privacy",
  "license": "MIT",
  "keywords": [
    "mermaid",
    "diagram",
    "flowchart",
    "terminal",
    "ghostty",
    "kitty",
    "mod"
  ],
  "userConfig": {
    "mode": {
      "type": "string",
      "title": "How to show diagrams",
      "description": "auto (the default) draws pictures in terminals that show kitty-graphics pictures (Ghostty, cmux, kitty; not inside tmux) and Unicode box drawing elsewhere. on always draws pictures, text always draws box drawing, off leaves the code blocks as written.",
      "default": "auto"
    },
    "teach_claude": {
      "type": "boolean",
      "title": "Tell Claude it can draw diagrams",
      "description": "Adds a short section to the system prompt, only where diagrams are drawn as pictures, saying that mermaid code blocks are shown as diagrams and which kinds are supported.",
      "default": true
    },
    "theme": {
      "type": "string",
      "title": "Diagram theme",
      "description": "auto (the default) draws on your terminal's own background in its text color. Or one of zinc-light, zinc-dark, tokyo-night, tokyo-night-storm, tokyo-night-light, catppuccin-mocha, catppuccin-latte, nord, nord-light, dracula, github-light, github-dark, solarized-light, solarized-dark, one-dark, drawn on its own background.",
      "default": "auto"
    },
    "colors": {
      "type": "string",
      "title": "Color overrides",
      "description": "Colors that win over the theme's, as key=#rrggbb pairs separated by spaces: bg (background), fg (text), line (edges), accent (arrow heads, highlights, chart series), muted (secondary text), surface (node fill), border (node outline). For example: accent=#d77757 line=#5c6370",
      "default": ""
    },
    "font": {
      "type": "string",
      "title": "Label font",
      "description": "auto (the default) uses Helvetica Neue on macOS and DejaVu Sans, Noto Sans or Liberation Sans on Linux; or the family name of a font installed on this machine. Hangul and other CJK text falls back to a system font that has it.",
      "default": "auto"
    },
    "text_scale": {
      "type": "number",
      "title": "Label size",
      "description": "Diagram label size relative to your terminal's text. A diagram wider than the terminal is shrunk to fit.",
      "default": 1,
      "min": 0.3,
      "max": 3
    },
    "node_path": {
      "type": "string",
      "title": "Node.js executable",
      "description": "The node that runs the renderer, as a command on PATH or an absolute path.",
      "default": "node"
    },
    "font_metrics": {
      "type": "string",
      "title": "Terminal font geometry",
      "description": "auto (the default) reads your terminal's font from its config (Ghostty, cmux, kitty) and works out the two numbers below the way the terminal does; they apply only when that fails. manual always uses them.",
      "default": "auto"
    },
    "cell_aspect": {
      "type": "number",
      "title": "Cell height over width",
      "description": "Your terminal cell's height divided by its width, in pixels. 2.125 is Ghostty's default font, JetBrains Mono at 13pt; Fira Code at 12pt on a Retina display is 2.0. Diagrams look stretched when it is off.",
      "default": 2.125,
      "min": 1,
      "max": 4
    },
    "line_height": {
      "type": "number",
      "title": "Cell height in ems",
      "description": "The cell height in ems of your terminal font: 1.308 for JetBrains Mono at 13pt, 1.25 for Fira Code at 12pt. Sets how large labels are next to your text.",
      "default": 1.308,
      "min": 1,
      "max": 2
    }
  },
  "interface": {
    "displayName": "Mermaid Inline",
    "developerName": "dazebug"
  },
  "holManifestOrigin": "repository",
  "registryIndexVersion": 5
}

Marketplace source

Repo URL
https://github.com/dazebug/mermaid-inline
Marketplace path
Unknown
Source path
.
Install policy
Unspecified

File inventory

.claude-plugin/plugin.json

file

4,247 bytes

3c2a6316352434bf…

.codex-plugin/plugin.json

plugin-manifest

3,788 bytes

1a42a67ac222f54f…

hooks/hooks.json

file

36 bytes

ae69340778202da5…

hooks/parse.ts

file

14,627 bytes

a3c198a58556a31e…

hooks/register.tsx

file

17,144 bytes

4d6c8b013916db41…

hooks/support.ts

file

1,938 bytes

1f28eb1662d26195…

hooks/tex.ts

file

24,624 bytes

193c06e1873e90a2…

package-lock.json

file

8,596 bytes

afdd90b9dcc9c425…

package.json

file

253 bytes

23880e12a68141d9…

README.md

file

16,329 bytes

ffbc01de4f66b820…

SECURITY.md

file

653 bytes

57c4424f0de1ca3f…

Mermaid Inline — Frequently asked questions

What is Mermaid Inline?
Mermaid Inline is an AI plugin in the HOL registry. Draws the Mermaid diagrams in Claude Code replies right in the terminal, as pictures in Ghostty, cmux and kitty and as Unicode box drawing in other terminals.
How do I install Mermaid Inline?
Install Mermaid Inline in your harness: Claude Code — /plugin marketplace add dazebug/mermaid-inline. Full step-by-step guidance is on the HOL plugin page.
How do I install Mermaid Inline in Claude Code?
To install Mermaid Inline in Claude Code, start with /plugin marketplace add dazebug/mermaid-inline. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
How is the Trust Score for Mermaid Inline computed?
Mermaid Inline has a HOL Trust Score of 65 out of 100. The score is a weighted sum of six components from a static scan of the source, capped for high-severity findings and adjusted by two disclosed policies. Memberships and payments are not inputs, and a scan is not a safety guarantee. Full breakdown: https://hol.org/registry/plugins/dazebug%2Fmermaid-inline/trust
Who publishes Mermaid Inline?
Mermaid Inline is published by dazebug and listed on HOL.

Install signal

HOL cannot see every install. These are separate signals from different sources, so they are not added together. Counts under each floor show as <N.

Install commands issued here
<5
HOL Guard install commands issued from this listing, last 28 days.
Opt-in install reports
<10
Machines that reported installing it through HOL Guard in week 2026-W43. Reporting is opt-in, so most installs are not counted.
HOL Guard workspaces
<5
Workspaces that approved it or include it in an approved-plugin feed, as of today.

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