Fizz Convert
pashov/skills
Convert English-language properties in PROPERTIES.md (produced by the Fizz skill) into Solidity assertions inside the existing fuzz harness, then flip their checkboxes.
Analyzes storage layout, proxy patterns, and state variable security in Solidity contracts.
Install Storage Analyzer
$ npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install alt-research2/SolidityGuard storage-analyzer --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/alt-research2/SolidityGuard.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/solidity-guard/skills/storage-analyzer .claude/skills/storage-analyzer && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "storage-analyzer" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/storage-analyzer into .claude/skills/storage-analyzer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "storage-analyzer", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/storage-analyzerType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install alt-research2/SolidityGuard storage-analyzer --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alt-research2/SolidityGuard.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/solidity-guard/skills/storage-analyzer .agents/skills/storage-analyzer && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "storage-analyzer" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/storage-analyzer into .agents/skills/storage-analyzer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "storage-analyzer", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install alt-research2/SolidityGuard storage-analyzer --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alt-research2/SolidityGuard.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/solidity-guard/skills/storage-analyzer .cursor/skills/storage-analyzer && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "storage-analyzer" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/storage-analyzer into .cursor/skills/storage-analyzer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "storage-analyzer", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/alt-research2/SolidityGuard.git --path .claude/skills/solidity-guard/skills/storage-analyzer--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install alt-research2/SolidityGuard storage-analyzer --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alt-research2/SolidityGuard.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/solidity-guard/skills/storage-analyzer .gemini/skills/storage-analyzer && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "storage-analyzer" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/storage-analyzer into .gemini/skills/storage-analyzer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "storage-analyzer", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install alt-research2/SolidityGuard storage-analyzerInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/alt-research2/SolidityGuard.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/solidity-guard/skills/storage-analyzer .github/skills/storage-analyzer && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "storage-analyzer" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/storage-analyzer into .github/skills/storage-analyzer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "storage-analyzer", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install alt-research2/SolidityGuard storage-analyzer --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/alt-research2/SolidityGuard.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/solidity-guard/skills/storage-analyzer .opencode/skills/storage-analyzer && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "storage-analyzer" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/storage-analyzer into .opencode/skills/storage-analyzer/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "storage-analyzer", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
storage-analyzer- GitHub stars
- 104
- Token cost
- ~1.3k tokens
- SKILL.md length
- 231 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Analyzes storage layout, proxy patterns, and state variable security in Solidity contracts.
- Works in 5 steps: Purpose → Vulnerability Patterns → Proxy Pattern Analysis → …
- Auditing proxy/upgradeable contracts
- SKILL.md covers 1. Purpose, 2. Vulnerability Patterns, 3. Proxy Pattern Analysis and 4. Secure Patterns, plus 1 more section
- Calls rg
What it does
Storage Analyzer is an agent skill from alt-research2/SolidityGuard. Analyzes storage layout, proxy patterns, and state variable security in Solidity contracts. Detects storage collisions, uninitialized pointers, and upgrade risks. Use when auditing proxy/upgradeable contracts.
Its SKILL.md is about 1.3k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Backend & APIs, covering Smart contracts. It works with Solidity. The repository describes itself as: Solidity/EVM smart contract security auditor — 104 vulnerability patterns, 8 tools, 100% CTF + EVMBench benchmark (120/120).
When your agent uses it
- Auditing proxy/upgradeable contracts
- Tasks that involve Smart contracts
Example prompts
- “Use the storage-analyzer skill to analyz storage layout, proxy patterns, and state variable security in Solidity contracts”
- “/storage-analyzer”
Requirements
- Pre-approved tools (allowed-tools): Read, Grep, Glob, Bash
Workflow steps
5 steps, taken from the step headings in SKILL.md.
- Purpose
- Vulnerability Patterns
- Proxy Pattern Analysis
- Secure Patterns
- Quick Checklist
What it can do on your machine
Read from SKILL.md and the folder at commit 35645e8. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves these tools, so the agent can use them without asking each time:
ReadGrepGlobBash
From allowed-tools in the SKILL.md frontmatter.
Runs code
Shell commands in SKILL.md call:
rg
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Storage Analyzer loads about 1.3k tokens when it runs. Until then it costs about 57 tokens; SKILL.md has 231 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check: notes
The automated check noted patterns worth knowing about, such as sudo or a known installer.
- NotePre-approves every shell command (allowed-tools: Bash)SKILL.md
allowed-tools: Read, Grep, Glob, Bash
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 231 words (~1,314 tokens).
“Detect storage-related vulnerabilities in Solidity contracts, especially proxy/upgradeable patterns. Storage issues are among the most severe and hardest to detect.”
- name
- storage-analyzer
- allowed-tools
- Read, Grep, Glob, Bash
Files
Just SKILL.md in .claude/skills/solidity-guard/skills/storage-analyzer of alt-research2/SolidityGuard.
Open the folder on GitHubat commit 35645e8
Compare with similar skills
Storage Analyzer next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Storage Analyzer this skillalt-research2/SolidityGuard | 104 | — | ~1.3k | Automated safety check: Notes | Custom licence | |
| Fizz Convertpashov/skills | 1.2k | 2 repos | ~3.7k | Automated safety check: Pass | MIT | |
| Feynman Auditor0xiehnnkta/nemesis-auditor | 243 | 1 repos | ~11k | Automated safety check: Pass | MIT | |
| Smart Contract Auditgreatpie/smart-contract-audit-skill | 101 | — | ~1.1k | Automated safety check: Pass | None | |
| RadarAuditware/radar | 154 | — | ~2.1k | Automated safety check: Pass | GPL-3.0 | |
| Solidity AuditorGabson0x/bountyforge | 443 | — | ~3.7k | Automated safety check: Pass | None |
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Smart Contract Audit
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Script-backed, out-of-box auditing workflow for Solidity/EVM repositories based on EVMbench detect/patch/exploit methodology.
Radar
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Use radar for smart contract security analysis, AST generation, and detection template development.
Solidity Auditor
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Security audit of Solidity code while you develop. An agent skill from Gabson0x/bountyforge.
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Fuzz Generator
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Reentrancy Auditor
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Deep reentrancy vulnerability analysis for Solidity contracts.
Report Generator
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Generates professional security audit reports from findings.
Solidity Vulnerability Scanner
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Comprehensive Solidity contract security scanner detecting 104 vulnerability patterns across reentrancy, access control, arithmetic, DeFi, proxy, and token categories.
Spec Compliance
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Related
Works with
Categories
Questions about Storage Analyzer
What does Storage Analyzer do?
Analyzes storage layout, proxy patterns, and state variable security in Solidity contracts. Storage Analyzer is an agent skill from alt-research2/SolidityGuard. Analyzes storage layout, proxy patterns, and state variable security in Solidity contracts.
When should I use Storage Analyzer?
Storage Analyzer fits situations like: auditing proxy/upgradeable contracts; tasks that involve Smart contracts.
How do I install Storage Analyzer in Claude Code?
Run `npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a claude-code`. Or copy the skill folder (.claude/skills/solidity-guard/skills/storage-analyzer in alt-research2/SolidityGuard) into .claude/skills/storage-analyzer in your project. Claude Code loads it when a task matches its description.
How do I install Storage Analyzer in Codex?
Run `npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a codex`. Or copy the skill folder (.claude/skills/solidity-guard/skills/storage-analyzer in alt-research2/SolidityGuard) into .agents/skills/storage-analyzer in your project. Codex loads it when a task matches its description.
Can I use Storage Analyzer in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add alt-research2/SolidityGuard --skill storage-analyzer -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/storage-analyzer, .gemini/skills/storage-analyzer, .github/skills/storage-analyzer and .opencode/skills/storage-analyzer in your project.
What does Storage Analyzer need to run?
Going by SKILL.md and its folder, Storage Analyzer needs the command-line tools its instructions call (rg). Its frontmatter pre-approves these tools: Read, Grep, Glob, Bash.
Does Storage Analyzer access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Storage Analyzer safe to install?
Our automated static check of SKILL.md found notes only (pre-approves every shell command (allowed-tools: bash)), nothing it rates as a warning. It is not a guarantee. Review the folder before installing.
What licence does Storage Analyzer use?
Storage Analyzer has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Storage Analyzer use?
About 1.3k tokens (SKILL.md is roughly 5.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Storage Analyzer?
Skills that share tags, products or a category with Storage Analyzer: Fizz Convert (pashov/skills, 1.2k stars), Feynman Auditor (0xiehnnkta/nemesis-auditor, 243 stars), Smart Contract Audit (greatpie/smart-contract-audit-skill, 101 stars) and Radar (Auditware/radar, 154 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Storage Analyzer?
alt-research2 (a GitHub organization) maintains it in alt-research2/SolidityGuard, which has 104 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on June 12, 2026.
Source: alt-research2/SolidityGuard on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.