evm-analysis
Deep EVM bytecode analysis and decompilation capabilities for smart contract security, gas optimization, and reverse engineering. Provides tools for analyzing opcodes, storage layouts, proxy patterns, and bytecode verification.
npx skills add a5c-ai/babysitter --skill evm-analysis --agent claude-code
Same command for any agent — swap --agent for codex, cursor, copilot.
Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.
# EVM/Bytecode Analysis Skill Expert-level EVM bytecode analysis and decompilation for smart contract security audits, gas optimization, and reverse engineering. ## Capabilities - **Bytecode Analysis**: Analyze EVM bytecode and opcodes - **Gas Cost Calculation**: Calculate gas costs per operation - **Storage Layout Identification**: Identify storage slot layouts and packing - **Decompilation**: Decompile bytecode to pseudo-Solidity - **Proxy Analysis**: Analyze proxy implementation slots (EIP-1967) - **Pattern Detection**: Detect bytecode patterns (CREATE2, selfdestruct) - **Bytecode Verification**: Verify contract bytecode against source ## MCP Server Integration This skill can leverage the following MCP servers: | Server | Purpose | Install | |--------|---------|---------| | **EVM MCP Tools** | Smart contract auditing, security analysis | [0xGval/evm-mcp-tools](https://github.com/0xGval/evm-mcp-tools) | | **Solidity Contract Analyzer** | Contract code analysis with metadata | [Skywork](https://skywork.ai/skypage/en/smart-contract-analysis-solidity) | ## Opcode Reference Common EVM opcodes and gas costs: | Category | Opcodes | Base Gas | |----------|---------|----------| | Arithme
- Capabilities
- MCP Server Integration
- Opcode Reference
- Storage Layout Analysis
- Standard Slot Patterns
- EIP-1967 Proxy Slots
- Bytecode Patterns
- Contract Creation
- Selector Dispatch
- Common Vulnerability Patterns
- Workflow
- 1. Fetch Contract Bytecode
- 2. Analyze Opcodes
- 3. Storage Slot Analysis
Using cast (Foundry) cast code <address> --rpc-url <rpc> Using curl curl -X POST <rpc> \ Disassemble with cast cast disassemble <bytecode> Or use online tools Read specific storage slot cast storage <address> <slot> --rpc-url <rpc> Read EIP-1967 implementation slot
What does the evm-analysis skill do?
Deep EVM bytecode analysis and decompilation capabilities for smart contract security, gas optimization, and reverse engineering. Provides tools for analyzing opcodes, storage layouts, proxy patterns, and bytecode verification.
How do I install it?
Run `npx skills add a5c-ai/babysitter --skill evm-analysis --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.
Where does this skill come from?
From a5c-ai/babysitter, a repository with 1,642 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.
Is a popular skill a good skill?
Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.