How do I install mermaid-for-claude?

Install mermaid-for-claude in your harness: Claude Code — /plugin marketplace add lucaswx2/mermaid-for-claude. Full step-by-step guidance is on the HOL plugin page.

How do I install mermaid-for-claude in Claude Code?

To install mermaid-for-claude in Claude Code, start with /plugin marketplace add lucaswx2/mermaid-for-claude. The complete step-by-step install guide for Claude Code is on the HOL plugin page.

How is the Trust Score for mermaid-for-claude computed?

mermaid-for-claude has a HOL Trust Score of 76 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/lucaswx2%2Fmermaid-for-claude/trust

Who publishes mermaid-for-claude?

mermaid-for-claude is published by lucaswx2 and listed on HOL.

mermaid-for-claude

lucaswx2/mermaid-for-claude · v0.1.0 · Development & Workflow

by lucaswx2Owner verifiedScan grade: caution

Renders Mermaid blocks from Claude Code replies as ASCII/Unicode diagrams inside the terminal, fully local with no browser

Install Source

Follow0

Trust Score76 Security scan64 ComponentsScan pending

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-for-claude 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
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

What is mermaid-for-claude?

mermaid-for-claude is a published development & workflow plugin for AI coding agents in the Claude Code ecosystem, developed by lucaswx2 and distributed through the HOL AI plugin registry. Renders Mermaid blocks from Claude Code replies as ASCII/Unicode diagrams inside the terminal, fully local with no browser.

Canonical slug: lucaswx2/mermaid-for-claude
Version: v0.1.0 · updated Sep 27, 2026
Open data: entity.json (JSON-LD)

Registry snapshot

Repository: https://github.com/lucaswx2/mermaid-for-claude
Canonical profile: https://hol.org/registry/plugins/lucaswx2%2Fmermaid-for-claude
Owner verification: Verified on HOL as @lucaswx2
Scanner: Registry fallback scan
Security result: Caution
Digest verified: Yes

Trust and security

Trust & reputation

On-Chain Verified

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

80/100

Publisher Quality

100/100

Provenance

Plugin root: .
Source repo: https://github.com/lucaswx2/mermaid-for-claude
Source commit: a83b951ccfcc…
Publisher verified: Yes
Owner verified: @lucaswx2

Continuous scanner CI detected

No action is required. This plugin receives the full trust score.

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.

Security posture

See how the Trust Score is computed

Caution

Security result

Security score

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 2026-10-30. 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
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
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
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-for-claude",
  "version": "0.1.0",
  "description": "Renders mermaid blocks from assistant replies as text diagrams inside the terminal. 100% local, Node 20+, no browser.",
  "author": {
    "name": "Lucas Medeiros"
  },
  "homepage": "https://github.com/lucaswx2/mermaid-for-claude",
  "repository": "https://github.com/lucaswx2/mermaid-for-claude",
  "license": "MIT",
  "keywords": [
    "mermaid",
    "diagram",
    "terminal",
    "ascii",
    "claude-code",
    "plugin"
  ],
  "interface": {
    "displayName": "mermaid-for-claude",
    "developerName": "lucaswx2"
  },
  "registryIndexVersion": 5
}

Marketplace source

Repo URL: https://github.com/lucaswx2/mermaid-for-claude
Marketplace path: Unknown
Source path: .
Install policy: Unspecified

File inventory

.claude-plugin/plugin.json

file

505 bytes

f36a368d8faf3c5d…

.codex-plugin/plugin.json

plugin-manifest

530 bytes

339e50a242339f6e…

CLAUDE.md

file

723 bytes

9ec260e9f7be6316…

hooks/hooks.json

file

473 bytes

eeed6fbebd95d142…

hooks/session-start.sh

file

9,377 bytes

956c2c1d5b1ee7a3…

hooks/stop.sh

file

1,155 bytes

bb3872ea5ba2bb3e…

package-lock.json

file

28,759 bytes

c3f6976c06b97f2e…

package.json

file

534 bytes

56a0abf68cc72894…

README.md

file

8,375 bytes

b230e93f38e19099…

SECURITY.md

file

1,283 bytes

53e6b5beb8e5d2c6…

tsconfig.json

file

360 bytes

9c96f3eb1765d152…