contracts

contracts is a skill for Claude Code, Codex from MingyiSecLab/Mingyi-Atlas. It costs 29 tokens per session (445 once invoked), scanned A, a copy of contracts-overview, Apache-2.0.

A security-audit guide for Solidity smart contracts, which are programs running on Ethereum-compatible blockchains. It checks for common DeFi weaknesses and helps create tests that demonstrate confirmed problems.

In plain words
What is it for?
Use it to check Solidity files, process Slither reports, investigate reentrancy, price-oracle, flash-loan, access-control, proxy, and signature-replay risks, and run Foundry proof-of-concept tests.
Why use it?
It gives auditors a consistent way to review contract code, organize scanner results, and verify whether serious warnings are real issues.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to check Solidity files, process Slither reports, investigate reentrancy, price-oracle, flash-loan, access-control, proxy, and signature-replay risks, and run Foundry proof-of-concept tests.

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Install with agentmods
npx agentmods add skills/mingyiseclab/mingyi-atlas/contracts
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 MingyiSecLab/Mingyi-Atlas --skill contracts
Clone the repo
git clone --depth 1 https://github.com/MingyiSecLab/Mingyi-Atlas

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 contracts

README.md
[![agentmods](https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/contracts/github.svg)](https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/contracts)
Your own site
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/contracts"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/contracts/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 contracts

Your own site · 80×15
<a href="https://agentmods.dev/skills/mingyiseclab/mingyi-atlas/contracts"><img src="https://agentmods.dev/badge/skills/mingyiseclab/mingyi-atlas/contracts.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 445 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.
Origin 89% copy Near-identical to another mod 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 $0.00029 $0.00445
Opus 5 $0.00015 $0.00222
Sonnet 5 $0.00006 $0.00089
Haiku 4.5 $0.00003 $0.00044

Measured 10d ago against content hash ccd956959a84, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

contracts 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 10d 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.

Origin

This is a copy

89% identical to contracts-overview — 19 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

src/skills/standard/contracts/SKILL.md · 35 lines

What it actually says

Smart Contract Audit Catalog

Playbooks

Skill Use for
/skills/standard/contracts/reentrancy/SKILL.md Classic + read-only reentrancy
/skills/standard/contracts/oracle-manipulation/SKILL.md Single-block TWAP / spot price abuse
/skills/standard/contracts/flash-loan/SKILL.md Flash-loan callback + unauth gadgets
/skills/standard/contracts/access-control/SKILL.md Missing modifiers, wrong msg.sender
/skills/standard/contracts/upgradeable-proxy/SKILL.md Uninitialized impl, storage clash
/skills/standard/contracts/signature-replay/SKILL.md Cross-chain, ecrecover zero address

Workflow

  1. Map the target: bash("find /workspace/src -name '*.sol' | head -50")
  2. solidity_scan_file on each file
  3. Run slither: bash("cd /workspace && slither . --json slither.json")
  4. slither_ingest("/workspace/slither.json")
  5. kg_query(kind="vulnerability", min_severity="high") to see the highs
  6. For each high, generate a Foundry PoC via foundry_reentrancy_test etc.
  7. bash("forge test -vvv --match-contract Test_") to run
  8. Promote passing PoCs as validated findings

Default severity floor

Impact CVSS / Reward tier
Loss of user funds Critical (9.8+)
Locked funds / permanent DoS High (7.5-9.0)
Temporary DoS / griefing Medium (5-7)
View-only data leak Low (3-5)
Files

What ships with it

9 files 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. 10d ago First seen · 35 lines · 29 tokens per session scan A ccd956959a84

Subscribe to this mod's changes

contracts is a skill published in the GitHub repository MingyiSecLab/Mingyi-Atlas (11 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 29 tokens to every session and 445 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. It is 89% identical to contracts-overview, differing in 19 lines, and is treated as a copy.