demo-guide

demo-guide is a skill for Claude Code, Codex from duc01226/EasyPlatform. It costs 33 tokens per session (14,444 once invoked), scanned A, original, MIT.

A Codex compatibility guide for loading project documentation and repository skills from static files.

In plain words
What is it for?
Use it when creating or following a demonstration guide in a repository.
Why use it?
It clarifies how Codex should find project instructions and handle workflows written for another coding assistant.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: reads .claude/ paths; mentions subagents; installed under .agents/ (shared by several agents).

Good fit Use it when creating or following a demonstration guide in a repository.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/duc01226/easyplatform/demo-guide
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add duc01226/EasyPlatform --skill demo-guide
Clone the repo
git clone --depth 1 https://github.com/duc01226/EasyPlatform

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for demo-guide

README.md
[![agentmods](https://agentmods.dev/badge/skills/duc01226/easyplatform/demo-guide/github.svg)](https://agentmods.dev/skills/duc01226/easyplatform/demo-guide)
Your own site
<a href="https://agentmods.dev/skills/duc01226/easyplatform/demo-guide"><img src="https://agentmods.dev/badge/skills/duc01226/easyplatform/demo-guide/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for demo-guide

Your own site · 80×15
<a href="https://agentmods.dev/skills/duc01226/easyplatform/demo-guide"><img src="https://agentmods.dev/badge/skills/duc01226/easyplatform/demo-guide.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 14,444 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 12 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Prompt Injection · line 18
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • high Prompt Injection · line 49
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • high Prompt Injection · line 330
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • high Prompt Injection · line 368
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • high Prompt Injection · line 420
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • high Agent Snooping · line 464
    Skill reads from agent configuration directories (.claude/, .codex/, .gemini/). These directories may contain API keys, personal settings, and other credentials that the skill has no legitimate need to access.
    Fix: Remove all code or instructions that access agent configuration directories (.claude/, .codex/, .gemini/). If configuration values are needed, pass them explicitly as parameters or environment variabl
  • high Prompt Injection · line 472
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • high Prompt Injection · line 486
    Hidden instructions were detected in comments or invisible text. These could contain malicious directives. Manual review is recommended.
    Fix: Audit all comments and invisible characters. Remove any instructions that direct the agent to perform unauthorized actions. Use plain, reviewable content.
  • medium Excessive Agency · line 556
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 115
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Prompt Injection · line 125
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 526
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00033 $0.14444
Opus 5.5 $0.00013 $0.05778
Sonnet 5.5 $0.00007 $0.02889
Haiku 4.5 $0.00003 $0.01444

Measured 3d ago against content hash 4da2f2c256f1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

demo-guide scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/demo-guide/SKILL.md · 459 lines

How it starts

The opening of the file, as written. The whole thing — 459 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Codex compatibility note:

  • Invoke $skill-name: load the registered .agents/skills/<name>/SKILL.md and execute it with Codex tools; no separate Skill tool or Claude mode switch is needed. Author .claude/**; mirrors are generated.
  • Track steps before execution and keep progress/evidence current. Explicit skill requests execute their protocol. Use the native question tool for required questions.
  • Map foreign tool names to available host capabilities. A name mismatch needs no approval; an actually unavailable required capability stops with its step/evidence and a user question before adaptation.
  • Subagent authorization: when a skill is user-invoked or AI-detected and its protocol requires subagents, that skill activation authorizes use of the required spawn_agent subagent(s) for that task.
  • Preserve protocol order unless the user approves a deviation. Workflows use $start-workflow: gates stay fixed; other steps may flex with logged reasons and evidence.

[BLOCKING] Execute skill steps in declared order. NEVER skip, reorder, or merge steps without explicit user approval. Inside a workflow run, $start-workflow → Workflow-step mode bounds this rule. [BLOCKING] Before each step or sub-skill call, update todo tracking: set in_progress when step starts, set completed when step ends. [BLOCKING] Every completed/skipped step MUST include brief evidence or explicit skip reason. [BLOCKING] If Task tools are unavailable, create and maintain an equivalent step-by-step plan tracker with the same status transitions.

Quick Summary

Goal: Investigate an in-scope feature end-to-end, then produce a stakeholder-ready, proof-carrying demo guide with real stories and profile-defined canonical identities linked to actual test/executor or approved manual-QC evidence, runnable user flows, domain storage/solution, and honest proof levels — UI-first, with technical cases in the closing appendix — so presenters can show behaviour, explain its data, and never claim unearned proof.

Summary: Read this if nothing else.

  • Purpose: MUST ATTENTION investigate before scripting; prove behaviour, user path, storage, and solution with file:line; ALWAYS state blockers instead of inventing missing evidence.
  • Main steps (in order): MUST ATTENTION (0) resolve scope → load output + configured spec contract → size S0–S4 → decompose → create todos; (1) clear the six-question gate + write the Understanding Brief; (2) gather five inventories; (3) map/persist canonical identities to actual carriers + classify channels; (4) trace storage/solution; (5) open guide + ledger and accumulate; (6) write four-part cases; (7) compose the task block at the top; (8) assign proof rungs + transparency; (9) validate.
  • Case contract: setup + numbered flow + discriminator + domain storage/solution + proof rung/chain. UI cases lead each story; technical cases keep full rigour in the closing appendix.
  • Modes and boundaries: feature-or-scope, --context, --output, --lang, --html, --stories, --estimate; only --estimate or an explicit estimation instruction names the estimate target — the demo scope never does; --lang emits a translated copy and --html follows post-approval Artifact flow; a no-front-end project names its primary demo surface; delegates gather read-only input only; secrets are redacted; deferred work is named in the header and chat summary.

Workflow:

  1. Resolve Scope, Load Contract, Size & Create Todos — prompt → context → ASK; read the template and configured spec contract; size S0–S4; decompose into story groups; create todos BEFORE the first deep read.
  2. Understand the Feature FIRST [BLOCKING] — clear the comprehension bar; use read-only gathering delegates only when needed; write the Understanding Brief.
  3. Gather the Five Inventories — discover through docs/project-config.json; record each ladder's landing rung.
  4. Map Stories → Cases + Classify the Demo Channel — preserve profile-defined canonical identities and map them to verified test/executor evidence; name gaps and tag every case 🖥️ UI or 🔧 technical; under no-front-end, UI means the declared primary surface (Step 3.1).
  5. Trace Domain Storage & Solution — per case, identify persisted/changed data, owner, migration/handler, consuming rule, and file:line evidence.
  6. Open the Guide + Ledger, Accumulate — write the spine first; add one block per story group; update the ledger as each lands.
  7. Write Each Case — setup → numbered flow → discriminator → domain storage/solution.
  8. Compose the Task Block — prepend a copy-paste-ready task at the very top: purpose, overall requirements, ALL acceptance criteria / user stories, authorization requirements, and a bottom-up estimate (effort points + man-days) per SYNC:estimation-framework, sized over the estimate target only — the current changes by default, the target the user names for estimation, or (no change set in scope) the labelled demo scope — never silently the entire feature.
  9. Prove — assign the proof rung and write the test-execution transparency note.
  10. Validate — pass the gate below before declaring done.

Read the full file on GitHub · 459 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago Changed · -183 lines · -69 tokens per session 4da2f2c256f1
  2. 1mo ago First seen · 642 lines · 102 tokens per session scan A 83ad4b390a97

Subscribe to this mod's changes

demo-guide is a skill published in the GitHub repository duc01226/EasyPlatform (12 stars, last pushed yesterday), licensed MIT. It adds 33 tokens to every session and 14,444 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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