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.
Validates Solidity implementation against specification documents.
Install Spec Compliance
$ npx skills add alt-research2/SolidityGuard --skill spec-compliance -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install alt-research2/SolidityGuard spec-compliance --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/spec-compliance .claude/skills/spec-compliance && 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 "spec-compliance" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/spec-compliance into .claude/skills/spec-compliance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-compliance", 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/spec-complianceType 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 spec-compliance -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install alt-research2/SolidityGuard spec-compliance --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/spec-compliance .agents/skills/spec-compliance && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "spec-compliance" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/spec-compliance into .agents/skills/spec-compliance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-compliance", 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 spec-compliance -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install alt-research2/SolidityGuard spec-compliance --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/spec-compliance .cursor/skills/spec-compliance && 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 "spec-compliance" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/spec-compliance into .cursor/skills/spec-compliance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-compliance", 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/spec-compliance--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 spec-compliance -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install alt-research2/SolidityGuard spec-compliance --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/spec-compliance .gemini/skills/spec-compliance && 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 "spec-compliance" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/spec-compliance into .gemini/skills/spec-compliance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-compliance", 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 spec-complianceInstalls 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 spec-compliance -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/spec-compliance .github/skills/spec-compliance && 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 "spec-compliance" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/spec-compliance into .github/skills/spec-compliance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-compliance", 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 spec-compliance -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 spec-compliance --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/spec-compliance .opencode/skills/spec-compliance && 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 "spec-compliance" agent skill from https://github.com/alt-research2/SolidityGuard/tree/main/.claude/skills/solidity-guard/skills/spec-compliance into .opencode/skills/spec-compliance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "spec-compliance", 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
spec-compliance- GitHub stars
- 104
- Token cost
- ~503 tokens
- SKILL.md length
- 126 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Validates Solidity implementation against specification documents.
- Works in 3 steps: Purpose → Methodology (Trail of Bits) → Anti-Hallucination Rules
- Tasks that involve Smart contracts
- SKILL.md covers 1. Purpose, 2. Methodology (Trail of Bits) and 3. Anti-Hallucination Rules
- Calls rg
What it does
Spec Compliance is an agent skill from alt-research2/SolidityGuard. Validates Solidity implementation against specification documents. Extracts behavior from docs (README, specs, NatSpec) and verifies code matches documented intent. Uses Trail of Bits methodology for divergence detection.
Its SKILL.md is about 500 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
- Tasks that involve Smart contracts
Example prompts
- “Use the spec-compliance skill to validate Solidity implementation against specification documents”
- “/spec-compliance”
Requirements
- Pre-approved tools (allowed-tools): Read, Grep, Glob, WebFetch
Workflow steps
3 steps, taken from the step headings in SKILL.md.
- Purpose
- Methodology (Trail of Bits)
- Anti-Hallucination Rules
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:
ReadGrepGlobWebFetch
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
Spec Compliance loads about 503 tokens when it runs. Until then it costs about 59 tokens; SKILL.md has 126 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 passed
The automated check found no risky patterns in SKILL.md.
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 126 words (~503 tokens).
“Detect divergences between documented behavior and actual implementation. Many vulnerabilities arise not from insecure code patterns, but from code that doesn't match the intended design.”
- name
- spec-compliance
- allowed-tools
- Read, Grep, Glob, WebFetch
Files
Just SKILL.md in .claude/skills/solidity-guard/skills/spec-compliance of alt-research2/SolidityGuard.
Open the folder on GitHubat commit 35645e8
Compare with similar skills
Spec Compliance 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 |
|---|---|---|---|---|---|---|
| Spec Compliance this skillalt-research2/SolidityGuard | 104 | — | ~503 | Automated safety check: Pass | 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 | 442 | — | ~3.7k | Automated safety check: Pass | None |
Similar skills
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Smart Contract Audit
greatpie/smart-contract-audit-skill
Script-backed, out-of-box auditing workflow for Solidity/EVM repositories based on EVMbench detect/patch/exploit methodology.
Radar
Auditware/radar
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.
Add Explorer
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Adds or repairs Diffyscan explorer API routing and response adapters for a new host, chain or payload format.
More from alt-research2/SolidityGuard
Storage Analyzer
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Analyzes storage layout, proxy patterns, and state variable security in Solidity contracts.
Entry Point Analyzer
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Analyzes Solidity contract entry points to map attack surface.
Fuzz Generator
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Generates Foundry invariant tests and Echidna property-based fuzz tests for Solidity contracts.
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.
Related
Works with
Categories
Questions about Spec Compliance
What does Spec Compliance do?
Validates Solidity implementation against specification documents. Spec Compliance is an agent skill from alt-research2/SolidityGuard. Validates Solidity implementation against specification documents.
When should I use Spec Compliance?
Spec Compliance fits situations like: tasks that involve Smart contracts.
How do I install Spec Compliance in Claude Code?
Run `npx skills add alt-research2/SolidityGuard --skill spec-compliance -a claude-code`. Or copy the skill folder (.claude/skills/solidity-guard/skills/spec-compliance in alt-research2/SolidityGuard) into .claude/skills/spec-compliance in your project. Claude Code loads it when a task matches its description.
How do I install Spec Compliance in Codex?
Run `npx skills add alt-research2/SolidityGuard --skill spec-compliance -a codex`. Or copy the skill folder (.claude/skills/solidity-guard/skills/spec-compliance in alt-research2/SolidityGuard) into .agents/skills/spec-compliance in your project. Codex loads it when a task matches its description.
Can I use Spec Compliance 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 spec-compliance -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/spec-compliance, .gemini/skills/spec-compliance, .github/skills/spec-compliance and .opencode/skills/spec-compliance in your project.
What does Spec Compliance need to run?
Going by SKILL.md and its folder, Spec Compliance needs the command-line tools its instructions call (rg). Its frontmatter pre-approves these tools: Read, Grep, Glob, WebFetch.
Does Spec Compliance 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 Spec Compliance safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Spec Compliance use?
Spec Compliance 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 Spec Compliance use?
About 503 tokens (SKILL.md is roughly 2k 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 Spec Compliance?
Skills that share tags, products or a category with Spec Compliance: 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 Spec Compliance?
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.