demo

demo is a command for coding agents from omermaksutii/RugProof. It costs 16 tokens per session (506 once invoked), scanned A, original, MIT.

A command that runs the audit tool on bundled example contracts containing known smart-contract vulnerabilities.

In plain words
What is it for?
Use it to try examples of reentrancy, price-oracle manipulation, flash-loan governance attacks, ERC-4626 donation attacks, signature replay, and Vyper compiler bugs.
Why use it?
It lets new users see how the tool reports real security problems before they provide their own code.

Command

Part of the rugproof plugin — 35 commands, 23 agents shipped together

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.

agentmods
npx agentmods add commands/omermaksutii/rugproof/demo
Clone the repo
git clone --depth 1 https://github.com/omermaksutii/RugProof

Or install rugproof, the plugin that ships this one along with the rest of its 35 commands, 23 agents.

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

README.md
[![agentmods](https://agentmods.dev/badge/commands/omermaksutii/rugproof/demo.svg)](https://agentmods.dev/commands/omermaksutii/rugproof/demo)
Your own site
<a href="https://agentmods.dev/commands/omermaksutii/rugproof/demo"><img src="https://agentmods.dev/badge/commands/omermaksutii/rugproof/demo.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 506 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00016 $0.00506
Opus 5 $0.00008 $0.00253
Sonnet 5 $0.00003 $0.00101
Haiku 4.5 $0.00002 $0.00051

Measured 5d ago against content hash 85d53c906103, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

demo 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 5d 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.

commands/demo.md · 47 lines

What it actually says

/demo — run on bundled vulnerable contracts

First-run experience. Lets a new user see Rugproof's output on a real (but safe) vulnerable contract — no need to bring their own code yet.

Bundled demos

Located in examples/ (Solidity) and examples-vyper/ (Vyper):

Demo Contract Primary vuln class
reentrancy examples/VulnerableVault.sol reentrancy + access-control
oracle examples/SpotOracleLending.sol oracle-manipulation + flash-loan
flash-loan examples/FlashLoanGovernance.sol governance flash-loan
inflation examples/Inflatable4626.sol ERC-4626 donation attack
replay examples/ReplayableBridge.sol signature replay (cross-chain)
vyper examples-vyper/VulnerableVyper.vy Vyper 0.2.15 @nonreentrant miscompile + access-control

Procedure

  1. Map $ARGUMENTS to one or more demo files. Default = all.
  2. Run /audit on each.
  3. Show full output (findings + grade + trust report).
  4. For each finding, optionally also run /exploit to generate a working PoC.
  5. End with a teaser:
That's what Rugproof finds on these demos.
Try it on your own code:
  /audit <your-file>
  /audit                        (scans your whole repo)

Got a deployed contract? Try:
  /audit-live <chain> <addr>

Notes

  • This is the marketing surface. Make the output look great — proper colors, no broken Markdown, satisfying summary.
  • The 5 bundled demos should be selected such that they exhibit the most "wow" findings (visible reentrancy, oracle manip, inflation attack).
  • For onboarding flows (/rugproof-init after-test-run), default to /demo reentrancy — quickest to read.
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. 5d ago First seen · 47 lines · 16 tokens per session scan A 85d53c906103

Subscribe to this mod's changes

demo is a command published in the GitHub repository omermaksutii/RugProof (9 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 506 once invoked, about $0.0001 per session on Opus 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.