How do I install Gnos?

Install Gnos in your harness: Codex — codex plugin marketplace add madhvantyagi/Gnos; Claude Code — /plugin marketplace add madhvantyagi/Gnos; Cursor — npx skills@1.7.4 add madhvantyagi/Gnos. Full step-by-step guidance is on the HOL plugin page.

How do I install Gnos in HOL Guard?

To install Gnos in HOL Guard, start with hol-guard plugin install madhvan-tyagi/gnos --apply. The complete step-by-step install guide for HOL Guard is on the HOL plugin page.

How do I install Gnos in Codex?

To install Gnos in Codex, start with codex plugin marketplace add madhvantyagi/Gnos. The complete step-by-step install guide for Codex is on the HOL plugin page.

How do I install Gnos in Claude Code?

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

How is the Trust Score for Gnos computed?

Gnos has a HOL Trust Score of 39 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/madhvan-tyagi%2Fgnos/trust

Gnos is published by Madhvan Tyagi and listed on HOL.

Gnos

madhvan-tyagi/gnos · v0.2.0 · Development & Workflow

by Madhvan TyagiScan grade: AcceptableAwesome AI Plugins

Teaching harness plugin that plans courses, diagnoses reasoning gaps, and generates lessons with diagrams, simulations, and PDFs

Install Source Claim this plugin

Follow0

Trust Score39 Security scan74 Components16

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 Gnos a fit?

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

Works with

Codex
Claude Code
Cursor

13 skills
3 MCP servers

Before you install

Sign-in: Not declared
Declared access: Interactive, Read, Write
License: MIT

Check before relying on it

Some security checks did not finish: Cisco skill scan and Cisco MCP scan. See the evidence
6 high or critical findings from the scan. See the evidence
The publisher has not verified ownership on HOL.

What is Gnos?

Gnos is a published development & workflow plugin for AI coding agents that works with Codex, Claude Code and Cursor, developed by Madhvan Tyagi and distributed through the HOL AI plugin registry. Teaching harness plugin that plans courses, diagnoses reasoning gaps, and generates lessons with diagrams, simulations, and PDFs.

Canonical slug: madhvan-tyagi/gnos
Version: v0.2.0 · updated Nov 4, 2026
Open data: entity.json (JSON-LD)

Registry snapshot

Repository: https://github.com/madhvantyagi/Gnos
Canonical profile: https://hol.org/registry/plugins/madhvan-tyagi%2Fgnos
Owner verification: Not verified
Marketplace source: .agents/plugins/marketplace.json
Scanner: HOL plugin scanner
Security result: Needs review
Digest verified: Yes

13 bundled skillsRead, copy or download each SKILL.mdOpen skills

Trust and security

Trust & reputation

HOL Trust Score

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

Installability

100/100

Maintenance

90/100

MCP server setup

100/100

Plugin Security

74/100

Provenance

70/100

Publisher Quality

75/100

Provenance

Plugin root: .
Source repo: https://github.com/madhvantyagi/Gnos
Source commit: a9eaab40e24a…
Publisher verified: No
Owner verified: Not owner verified
Agent Plugins 1.0: Not detected

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

Needs review

Security result

Security score

High findings

Provider: codex-plugin-scanner
Grade: C · Acceptable
Version: 3.24.2

codex:hol-plugin-scanner-UTh4dj / cisco-skill-scanner: failedcodex:hol-plugin-scanner-UTh4dj / cisco-mcp-scanner: unavailable

[claude:.] Claude Plugin

18/18

5 checks

[claude:.] Security

17/24

6 checks

[claude:.] Operational Security

0/6

5 checks

[claude:.] Code Quality

5/10

2 checks

[codex:.] Manifest Validation

28/31

9 checks

[codex:.] Security

17/24

9 checks

[codex:.] Operational Security

0/6

5 checks

[codex:.] Best Practices

9/12

5 checks

[codex:.] Marketplace

15/15

3 checks

[codex:.] Skill Security

5/5

4 checks

[codex:.] Code Quality

5/10

2 checks

Published advisories

None matched in GitHub security advisories, checked 2026-11-02. This covers published advisories only, not problems nobody has reported.

GitHub security advisories are those the source repository has published.

Findings

highsecurityHARDCODED_SECRETReported 2 times

Potential secret material was detected in skills/jsxgraph/assets/vendor/jsxgraphcore.js.

Remove the secret from source control and load it securely at runtime.

highcode-qualityDANGEROUS_DYNAMIC_EXECUTIONReported 2 times

skills/jsxgraph/assets/vendor/jsxgraphcore.js: eval() uses eval() or new Function().

Remove dynamic code evaluation and replace it with explicit control flow.

highcode-qualityDANGEROUS_DYNAMIC_EXECUTIONReported 2 times

skills/jsxgraph/assets/vendor/jsxgraphcore.js: new Function() uses eval() or new Function().

Remove dynamic code evaluation and replace it with explicit control flow.

mediumoperational-securityDEPENDENCY_LOCKFILE_MISSINGReported 2 times

pyproject.toml is present without a corresponding lockfile or pinned dependency snapshot.

Commit a lockfile or use fully pinned requirements for reproducible dependency resolution.

lowoperational-securityDEPENDABOT_MISSINGReported 2 times

Automation or dependency surfaces exist, but .github/dependabot.yml is missing.

Add Dependabot updates for GitHub Actions and dependency manifests.

infomanifest-validationPLUGIN_JSON_INTERFACE_ASSET_PRIVACYPOLICYURL

The interface field "privacyPolicyURL" must use HTTPS or point to a safe in-repo asset.

Update "privacyPolicyURL" to use HTTPS or an existing relative asset path.

infomanifest-validationPLUGIN_JSON_INTERFACE_ASSET_TERMSOFSERVICEURL

The interface field "termsOfServiceURL" must use HTTPS or point to a safe in-repo asset.

Update "termsOfServiceURL" to use HTTPS or an existing relative asset path.

infomanifest-validationPLUGIN_JSON_INTERFACE_ASSET_COMPOSERICON

The interface field "composerIcon" must use HTTPS or point to a safe in-repo asset.

Update "composerIcon" to use HTTPS or an existing relative asset path.

infomanifest-validationPLUGIN_JSON_INTERFACE_ASSET_LOGO

The interface field "logo" must use HTTPS or point to a safe in-repo asset.

Update "logo" to use HTTPS or an existing relative asset path.

infobest-practicesCODEXIGNORE_MISSING

A .codexignore file helps prevent accidental inclusion of local artifacts and secrets.

Add a .codexignore file with generated assets, local state, and secret paths.

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
Install the plugin
Installs the gnos entry from the gnos marketplace.
claude code
3
Scripted alternative
Non-interactive equivalent for scripts and CI pipelines. Add --scope project to pin the install to one repository.
shell
4
Check it is installed
Lists installed plugins. The entry should appear as enabled.
shell

To remove it later, run claude plugin uninstall gnos@gnos.

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-W44, 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.

Loading reviews

Plugin manifest

{
  "name": "gnos",
  "version": "0.2.0",
  "description": "A teaching harness that diagnoses the learner's reasoning gap and selects the right teacher, subject guidance, and learning artifact.",
  "author": {
    "name": "Madhvan Tyagi",
    "url": "https://github.com/madhvantyagi"
  },
  "homepage": "https://github.com/madhvantyagi/Gnos",
  "repository": "https://github.com/madhvantyagi/Gnos",
  "license": "MIT",
  "keywords": [
    "education",
    "teaching",
    "learning",
    "diagrams",
    "animation",
    "excalidraw",
    "pinepaper"
  ],
  "skills": "./",
  "mcpServers": "./.registry/mcp.json",
  "interface": {
    "displayName": "GNOS",
    "developerName": "Madhvan Tyagi",
    "shortDescription": "Learn difficult ideas with subject-aware teachers.",
    "longDescription": "GNOS diagnoses the learner's exact reasoning gap, selects focused subject and teacher context, and uses text, code, diagrams, PDFs, or animation when each representation helps.",
    "category": "Education",
    "capabilities": [
      "Interactive",
      "Read",
      "Write"
    ],
    "websiteURL": "https://github.com/madhvantyagi/Gnos",
    "defaultPrompt": [
      "Teach me a difficult idea from the point where my reasoning breaks.",
      "Help me understand this computer-science concept with a useful diagram.",
      "Build a course around what I want to be able to do."
    ],
    "brandColor": "#2F5D50",
    "composerIcon": "./assets/icon.png",
    "logo": "./assets/icon.png",
    "screenshots": [
      "./assets/course-viewer-rl-to-grpo.png",
      "./assets/lesson-simulation.png",
      "./assets/lesson-video.png"
    ]
  },
  "holManifestOrigin": "repository",
  "registryIndexVersion": 9
}

Marketplace source

Repo URL: https://github.com/madhvantyagi/Gnos
Marketplace path: .agents/plugins/marketplace.json
Source path: .
Install policy: Unspecified

Skills

13 SKILL.md files ship with this plugin. Preview, copy, or download each one, then install them with the Skills CLI.

skills-cli

course-design
skills/course-design/SKILL.md
Design and revise a course's goal, progression, prerequisites, and sources. Record depth and duration, validate and enroll course.json, then hand the current topic to lesson-design.
Raw SKILL.md
course-viewer
skills/course-viewer/SKILL.md
Show an enrolled course and its lessons. Use lesson-design to author or repair the current lesson before delivering teaching; render published content and serve the local page with saved exercises.
Raw SKILL.md
excalidraw
skills/excalidraw/SKILL.md
Create inspectable teaching diagrams with the Excalidraw MCP server when a lesson needs a clear relationship, process, state, or boundary sketch.
Raw SKILL.md
jsxgraph
skills/jsxgraph/SKILL.md
Build and inspect mathematical graphs and coordinate constructions with JSXGraph when a learner needs to connect an equation to a shape, solve graphically, or test a quantitative change. Use other diagram tools for concept maps, network layouts, and geographic maps.
Raw SKILL.md
khan-academy
skills/khan-academy/SKILL.md
Find a Khan Academy video fast and add it only on a strong match.
Raw SKILL.md
learner-tracking
skills/learner-tracking/SKILL.md
Record what the learner does and adapt the course to it in real time.
Raw SKILL.md
learning-orchestrator
skills/learning-orchestrator/SKILL.md
Entry point. Start every GNOS turn here: read the request, route it to a subject, teacher, course, or learner record, then teach. After a course build or change, enroll, finish the current lesson, then offer its page.
Raw SKILL.md
learning
skills/learning/SKILL.md
Compatibility route for older GNOS learning invocations; continue through learning-orchestrator.
Raw SKILL.md
lesson-design
skills/lesson-design/SKILL.md
Develop the current topic into a connected lesson. Choose complementary representations, review each block, register its artifacts, and publish lesson.json.
Raw SKILL.md
manim-voice-animation
skills/manim-voice-animation/SKILL.md
Make Manim teaching animations with narration and subtitles when motion helps a concept.
Raw SKILL.md
pdf
skills/pdf/SKILL.md
Turn lesson content into a PDF handout; render and check it before delivery.
Raw SKILL.md
pinepaper
skills/pinepaper/SKILL.md
Build and check Pinepaper MCP diagrams, charts, motion, and interactive models when a lesson needs linked visual states or a changing quantity.
Raw SKILL.md
subject
skills/subject/SKILL.md
Select the lead subject, supporting bridges, teacher, sources, and field-specific teaching guidance for a learning goal.
Raw SKILL.md

File inventory

.agents/plugins/marketplace.json

file

331 bytes

1213bfc2b8252de6…

.claude-plugin/plugin.json

file

498 bytes

0a6ce6a9c6787f48…

.codex-plugin/plugin.json

plugin-manifest

1,453 bytes

2f550f715d587621…

.cursor-plugin/marketplace.json

file

401 bytes

e25518373409980c…

.cursor-plugin/plugin.json

file

616 bytes

642dfeff0e8630b0…

.cursor/mcp.json

file

674 bytes

6ddd00f6bf8f5706…

.mcp.json

file

674 bytes

6ddd00f6bf8f5706…

.registry/mcp.json

mcp-config

457 bytes

1da0e41f696f0722…

AGENTS.md

file

1,280 bytes

8f11c7b920ff0db0…

assets/course-viewer-rl-to-grpo.png

asset

273,560 bytes

bf84d32e1de3378e…

assets/lesson-simulation.png

asset

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assets/lesson-video.png

asset

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LICENSE

file

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pyproject.toml

file

160 bytes

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README.md

file

7,725 bytes

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SECURITY.md

file

3,048 bytes

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skills/course-design/references/artifact-manifest.md

skill

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skills/course-design/references/course-contract.md

skill

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skills/course-design/references/course-research.md

skill

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skills/course-design/references/portal-interactions.md

skill

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skills/course-design/scripts/artifact_manifest.py

skill

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skills/course-design/scripts/course_contract.py

skill

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skills/course-design/scripts/course_edits.py

skill

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skills/course-design/scripts/course_progress.py

skill

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skills/course-design/scripts/course_workspace.py

skill

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skills/course-design/scripts/evidence_order.py

skill

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skills/course-design/scripts/lesson_contract.py

skill

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skills/course-design/scripts/lesson_review.py

skill

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skills/course-design/scripts/manage_artifact.py

skill

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skills/course-design/scripts/manage_interaction.py

skill

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skills/course-design/scripts/portal_interactions.py

skill

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skills/course-design/scripts/portal_views.py

skill

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skills/course-design/scripts/validate_course.py

skill

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skills/course-design/scripts/validate_lesson.py

skill

1,412 bytes

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skills/course-design/SKILL.md

skill

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skills/course-viewer/references/example.html

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skills/course-viewer/references/vendor/highlight/github-dark.min.css

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skills/course-viewer/references/vendor/highlight/highlight.min.js

skill

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skills/course-viewer/references/vendor/katex/auto-render.min.js

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skills/course-viewer/references/vendor/katex/katex.min.js

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skills/course-viewer/references/vendor/README.md

skill

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skills/course-viewer/scripts/exercise_controls.js

skill

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skills/course-viewer/scripts/render_viewer.py

skill

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skills/course-viewer/scripts/serve_course.py

skill

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skills/course-viewer/SKILL.md

skill

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skills/excalidraw/references/color-and-type.md

skill

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skills/excalidraw/references/diagram-types.md

skill

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skills/excalidraw/references/review-and-handoff.md

skill

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skills/excalidraw/SKILL.md

skill

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skills/jsxgraph/assets/vendor/jsxgraphcore.js

skill

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skills/jsxgraph/assets/vendor/jsxgraphcore.js.LICENSE.txt

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skills/jsxgraph/assets/vendor/source.json

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skills/jsxgraph/examples/derivative.js

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skills/jsxgraph/examples/gradient-descent.js

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skills/jsxgraph/examples/supply-demand.js

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skills/jsxgraph/references/authoring.md

skill

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skills/jsxgraph/scripts/build_graph.py

skill

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skills/jsxgraph/SKILL.md

skill

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skills/jsxgraph/templates/graph.html

skill

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skills/jsxgraph/templates/graph.js

skill

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skills/khan-academy/references/embedding.md

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skills/khan-academy/references/finder-workflow.md

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skills/khan-academy/references/incorporation.md

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skills/khan-academy/references/selection.md

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skills/khan-academy/scripts/probe_mcp.py

skill

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skills/khan-academy/scripts/review_video_blocks.py

skill

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skills/khan-academy/scripts/video_finder.py

skill

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skills/khan-academy/SKILL.md

skill

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skills/learner-tracking/references/adaptive-lifecycle.md

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skills/learner-tracking/references/evidence.md

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skills/learner-tracking/references/exercise-review.md

skill

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skills/learner-tracking/references/memory-categories.md

skill

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skills/learner-tracking/scripts/learner_state.py

skill

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skills/learner-tracking/scripts/memory_views.py

skill

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skills/learner-tracking/SKILL.md

skill

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skills/learning-orchestrator/references/teaching-decisions.md

skill

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skills/learning-orchestrator/scripts/assemble_context.py

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skills/learning-orchestrator/scripts/validate_harness.py

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skills/learning-orchestrator/SKILL.md

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skills/learning/SKILL.md

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skills/lesson-design/references/lesson-contract.md

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skills/lesson-design/references/lesson-design.md

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skills/lesson-design/references/representation-choices.md

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skills/lesson-design/references/simulation-design.md

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skills/lesson-design/references/worker-brief.md

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skills/lesson-design/scripts/build_block_context.py

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skills/lesson-design/scripts/visual_levels.py

skill

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skills/lesson-design/SKILL.md

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skills/lesson-design/templates/simulation.html

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skills/manim-voice-animation/components/__init__.py

skill

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skills/manim-voice-animation/components/illustrations.py

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skills/manim-voice-animation/references/01_pedagogical_storyboard.md

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skills/manim-voice-animation/references/02_voiceover_synchronization.md

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skills/manim-voice-animation/references/03_math_proofs_calculus.md

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skills/manim-voice-animation/references/04_linear_algebra_matrices.md

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skills/manim-voice-animation/references/05_physics_mechanics_fields.md

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skills/manim-voice-animation/references/06_cs_algorithms_graphs.md

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skills/manim-voice-animation/references/07_3d_surfaces_camera.md

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skills/manim-voice-animation/references/08_anti_patterns_curated_fixes.md

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Browse all 152 files

Gnos — Frequently asked questions

What is Gnos?: Gnos is an AI plugin in the HOL registry. Teaching harness plugin that plans courses, diagnoses reasoning gaps, and generates lessons with diagrams, simulations, and PDFs.
How do I install Gnos?: Install Gnos in your harness: Codex — codex plugin marketplace add madhvantyagi/Gnos; Claude Code — /plugin marketplace add madhvantyagi/Gnos; Cursor — npx [email protected] add madhvantyagi/Gnos. Full step-by-step guidance is on the HOL plugin page.
How do I install Gnos in HOL Guard?: To install Gnos in HOL Guard, start with hol-guard plugin install madhvan-tyagi/gnos --apply. The complete step-by-step install guide for HOL Guard is on the HOL plugin page.
How do I install Gnos in Codex?: To install Gnos in Codex, start with codex plugin marketplace add madhvantyagi/Gnos. The complete step-by-step install guide for Codex is on the HOL plugin page.
How do I install Gnos in Claude Code?: To install Gnos in Claude Code, start with /plugin marketplace add madhvantyagi/Gnos. The complete step-by-step install guide for Claude Code is on the HOL plugin page.
How is the Trust Score for Gnos computed?: Gnos has a HOL Trust Score of 39 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/madhvan-tyagi%2Fgnos/trust
Who publishes Gnos?: Gnos is published by Madhvan Tyagi and listed on HOL.

Directory acceptance

Listed in 0 of 5 directory lists

Read from the list each directory publishes on GitHub. Being listed means the directory accepted the plugin; it is not a HOL security rating.

Claude Code official marketplaceNot listed
Plugins Anthropic maintains or selected for the marketplace Claude Code ships with.
Claude community directoryNot listed
Plugins submitted through claude.ai that passed Anthropic’s review; the list is a nightly mirror.
Codex curated marketplaceNot listed
Plugins OpenAI lists in the marketplace Codex ships with.
Cursor official pluginsNot in public list
Plugins Cursor publishes itself. Cursor does not publish its list of third-party Marketplace plugins.
Awesome Codex Plugins (HOL)Not listed
The community Codex plugin list HOL maintains on GitHub.

Lists last read Nov 4, 2026. HOL re-reads them every day.

Submitting it? Check it against each directory's rules

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-W44. 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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Gnos — Frequently asked questions

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