--- title: "Entry-point analyzer: review, setup & limitations · Undominated.ai" canonical: https://undominated.ai/skills/trailofbits-entry-point-analyzer/ description: "Lists state-changing smart-contract entry points and their access class, and excludes view functions, exploit writing, and non-contract code." --- # Entry-point analyzer: review, setup & limitations · Undominated.ai > Lists state-changing smart-contract entry points and their access class, and excludes view functions, exploit writing, and non-contract code. [← Explore all skills](/skills/) SECURITY REVIEW / Trail of Bits # Entry-point analyzer Lists state-changing smart-contract entry points and their access class, and excludes view functions, exploit writing, and non-contract code. [See setup guidance ↓](#setup)[Original source ↗](https://github.com/trailofbits/skills/tree/82fe8226252622fa807643bdca1710901198553a/plugins/entry-point-analyzer/skills/entry-point-analyzer) SOURCE REVIEW Reviewed 2026-10-14 Evidence 2 linked sources Publisher Trail of Bits Licence [CC-BY-SA-4.0 ↗](https://github.com/trailofbits/skills/blob/82fe8226252622fa807643bdca1710901198553a/LICENSE) Revision 82fe82262526 [Read what was—and wasn’t—checked ↓](#review) “Analyzes smart contract codebases to identify state-changing entry points for security auditing. Detects externally callable functions that modify state, categorizes them by access level (public, admin, role-restricted, contract-only), and generates structured audit reports. Excludes view/pure/read-only functions. Use when auditing smart contracts (Solidity, Vyper, Solana/Rust, Move, TON, CosmWasm) or when asked to find entry points, audit flows, external functions, access control patterns, or privileged operations.” [Trail of Bits · upstream description ↗](https://github.com/trailofbits/skills/blob/82fe8226252622fa807643bdca1710901198553a/plugins/entry-point-analyzer/skills/entry-point-analyzer/SKILL.md) Our analysis follows below. 01 / THE REASONING ## Why this made the selection. - When NOT to Use sends vulnerability hunting, exploit proofs, gas work, and non-contract code elsewhere. - Read-only functions are excluded because they cannot directly change state. - The Solidity reference includes external and public state-changing functions and marks external view and pure functions as excluded. ### A good fit for - Scoping a contract audit to functions that can change state - Classifying a function as public, admin, role-restricted, or contract-only after reading the modifier - Map externally reachable state-changing contract functions and the actual access checks they apply. ### Weigh up before choosing - The skill does not detect vulnerabilities and tells the reader to use a different audit skill for that. - A modifier name is not evidence; the rationalizations section says to read the modifier body. - This review did not execute the skill against a contract. - Excluding view/pure functions narrows the inventory; read-only reentrancy and downstream oracle consumers can still affect system risk. A callback name alone does not enforce a contract-only caller. 02 / THE REVIEW RECORD ## What we actually inspected. Source review has boundaries. A clear record is more useful than a “safe” badge. ### Material inspected - plugins/entry-point-analyzer/skills/entry-point-analyzer/SKILL.md - LICENSE - README.md - plugins/entry-point-analyzer/skills/entry-point-analyzer/references/solidity.md ### Our findings - When NOT to Use lists vulnerability detection, exploit proofs of concept, code-quality or gas analysis, non-contract code, and read-only functions. - An ambiguous role is flagged Restricted (review required) instead of being guessed. - Rejected shortcuts include skipping callbacks, because callbacks define trust boundaries, and trusting a function that looks standard. - references/solidity.md includes external and public functions with no view or pure modifier and excludes external view and pure functions. - The definition separates public, role-restricted and integration entry points and requires tracing modifier implementations instead of trusting their names. ### Not established by this review - The skill was not executed inside a host agent. - No contract was parsed and the per-chain reference files other than Solidity were not applied. The review applies to the material and revision named here. A newer upstream release can change its behavior. 03 / PUT IT TO WORK ## Add a skill to your workflow. [Upstream setup instructions ↗](https://github.com/trailofbits/skills/blob/82fe8226252622fa807643bdca1710901198553a/README.md) DOCUMENTED COMMAND /plugin marketplace add trailofbits/skills Copy command ↗ Copying does not execute this command. It may retrieve a newer version than the reviewed source. - Claude Code: add the marketplace with /plugin marketplace add trailofbits/skills, then install the entry-point-analyzer plugin from /plugin menu. - Codex: the README documents codex plugin marketplace add trailofbits/skills, then codex plugin add @trailofbits. - The download holds SKILL.md, the seven language references and agents/openai.yaml from the pinned skill directory, with the licence. - Do not treat the output as a completed audit. - Download the complete bundle from https://undominated.ai/resources/skills/trailofbits-entry-point-analyzer/bundle.zip and extract it into a new directory. It holds SKILL.md and 8 supporting files unchanged at revision 82fe8226, the upstream licence and an attribution file. - Place the extracted directory in your host's documented skills directory, named entry-point-analyzer. Keep SKILL.md and the licence together. ### Before you start - The contract source - Slither, optional, for Solidity ### Compatibility Claude Code plugin marketplace · Codex via Claude marketplace compatibility · Solidity, Vyper, Solana, Move, TON and CosmWasm codebases ### Local Markdown instructions - allowed-tools lists Read, Grep, Glob, and Bash. - The skill reads contract sources and writes a classified entry-point inventory. - Reads and may compile contract source; mapping does not require signing or on-chain mutation. ### Cost model CC-BY-SA-4.0. The pinned LICENSE is Creative Commons Attribution-ShareAlike 4.0 International. The skill does not say a paid Trail of Bits account is required. THE COMPLETE REVIEWED DEFINITION ## Read it before you reuse it. Original source bytes, with attribution. Review the host-specific setup notes above. Copy definition ↗ [Download complete resource + licence ↗](/resources/skills/trailofbits-entry-point-analyzer/bundle.zip)[Raw Markdown ↗](/resources/skills/trailofbits-entry-point-analyzer/definition.md) --- name: entry-point-analyzer description: Analyzes smart contract codebases to identify state-changing entry points for security auditing. Detects externally callable functions that modify state, categorizes them by access level (public, admin, role-restricted, contract-only), and generates structured audit reports. Excludes view/pure/read-only functions. Use when auditing smart contracts (Solidity, Vyper, Solana/Rust, Move, TON, CosmWasm) or when asked to find entry points, audit flows, external functions, access control patterns, or privileged operations. allowed-tools: Read Grep Glob Bash --- # Entry Point Analyzer Systematically identify all **state-changing** entry points in a smart contract codebase to guide security audits. ## When to Use Use this skill when: - Starting a smart contract security audit to map the attack surface - Asked to find entry points, external functions, or audit flows - Analyzing access control patterns across a codebase - Identifying privileged operations and role-restricted functions - Building an understanding of which functions can modify contract state ## When NOT to Use Do NOT use this skill for: - Vulnerability detection (use audit-context-building or domain-specific-audits) - Writing exploit POCs (use solidity-poc-builder) - Code quality or gas optimization analysis - Non-smart-contract codebases - Analyzing read-only functions (this skill excludes them) ## Scope: State-Changing Functions Only This skill focuses exclusively on functions that can modify state. **Excluded:** | Language | Excluded Patterns | |----------|-------------------| | Solidity | `view`, `pure` functions | | Vyper | `@view`, `@pure` functions | | Solana | Functions without `mut` account references | | Move | Non-entry `public fun` (module-callable only) | | TON | `get` methods (FunC), read-only receivers (Tact) | | CosmWasm | `query` entry point and its handlers | **Why exclude read-only functions?** They cannot directly cause loss of funds or state corruption. While they may leak information, the primary audit focus is on functions that can change state. ## Workflow 1. **Detect Language** - Identify contract language(s) from file extensions and syntax 2. **Use Tooling (if available)** - For Solidity, check if Slither is available and use it 3. **Locate Contracts** - Find all contract/module files (apply directory filter if specified) 4. **Extract Entry Points** - Parse each file for externally callable, state-changing functions 5. **Classify Access** - Categorize each function by access level 6. **Generate Report** - Output structured markdown report ## Slither Integration (Solidity) For Solidity codebases, Slither can automatically extract entry points. Before manual analysis: ### 1. Check if Slither is Available ```bash which slither ``` ### 2. If Slither is Detected, Run Entry Points Printer ```bash slither . --print entry-points ``` This outputs a table of all state-changing entry points with: - Contract name - Function name - Visibility - Modifiers applied ### 3. Use Slither Output as Foundation - Parse the Slither output table to populate your analysis - Cross-reference with manual inspection for access control classification - Slither may miss some patterns (callbacks, dynamic access control)—supplement with manual review - If Slither fails (compilation errors, unsupported features), fall back to manual analysis ### 4. When Slither is NOT Available If `which slither` returns nothing, proceed with manual analysis using the language-specific reference files. ## Language Detection | Extension | Language | Reference | |-----------|----------|-----------| | `.sol` | Solidity | [{baseDir}/references/solidity.md]({baseDir}/references/solidity.md) | | `.vy` | Vyper | [{baseDir}/references/vyper.md]({baseDir}/references/vyper.md) | | `.rs` + `Cargo.toml` with `solana-program` | Solana (Rust) | [{baseDir}/references/solana.md]({baseDir}/references/solana.md) | | `.move` + `Move.toml` with `edition` | [{baseDir}/references/move-sui.md]({baseDir}/references/move-sui.md) | | `.move` + `Move.toml` with `Aptos` | [{baseDir}/references/move-aptos.md]({baseDir}/references/move-aptos.md) | | `.fc`, `.func`, `.tact` | TON (FunC/Tact) | [{baseDir}/references/ton.md]({baseDir}/references/ton.md) | | `.rs` + `Cargo.toml` with `cosmwasm-std` | CosmWasm | [{baseDir}/references/cosmwasm.md]({baseDir}/references/cosmwasm.md) | Load the appropriate reference file(s) based on detected language before analysis. ## Access Classification Classify each state-changing entry point into one of these categories: ### 1. Public (Unrestricted) Functions callable by anyone without restrictions. ### 2. Role-Restricted Functions limited to specific roles. Common patterns to detect: - Explicit role names: `admin`, `owner`, `governance`, `guardian`, `operator`, `manager`, `minter`, `pauser`, `keeper`, `relayer`, `lender`, `borrower` - Role-checking patterns: `onlyRole`, `hasRole`, `require(msg.sender == X)`, `assert_owner`, `#[access_control]` - When role is ambiguous, flag as **"Restricted (review required)"** with the restriction pattern noted ### 3. Contract-Only (Internal Integration Points) Functions callable only by other contracts, not by EOAs. Indicators: - Callbacks: `onERC721Received`, `uniswapV3SwapCallback`, `flashLoanCallback` - Interface implementations with contract-caller checks - Functions that revert if `tx.origin == msg.sender` - Cross-contract hooks ## Output Format Generate a markdown report with this structure: ```markdown # Entry Point Analysis: [Project Name] **Analyzed**: [timestamp] **Scope**: [directories analyzed or "full codebase"] **Languages**: [detected languages] **Focus**: State-changing functions only (view/pure excluded) ## Summary | Category | Count | |----------|-------| | Public (Unrestricted) | X | | Role-Restricted | X | | Restricted (Review Required) | X | | Contract-Only | X | | **Total** | **X** | --- ## Public Entry Points (Unrestricted) State-changing functions callable by anyone—prioritize for attack surface analysis. | Function | File | Notes | |----------|------|-------| | `functionName(params)` | `path/to/file.sol:L42` | Brief note if relevant | --- ## Role-Restricted Entry Points ### Admin / Owner | Function | File | Restriction | |----------|------|-------------| | `setFee(uint256)` | `Config.sol:L15` | `onlyOwner` | ### Governance | Function | File | Restriction | |----------|------|-------------| ### Guardian / Pauser | Function | File | Restriction | |----------|------|-------------| ### Other Roles | Function | File | Restriction | Role | |----------|------|-------------|------| --- ## Restricted (Review Required) Functions with access control patterns that need manual verification. | Function | File | Pattern | Why Review | |----------|------|---------|------------| | `execute(bytes)` | `Executor.sol:L88` | `require(trusted[msg.sender])` | Dynamic trust list | --- ## Contract-Only (Internal Integration Points) Functions only callable by other contracts—useful for understanding trust boundaries. | Function | File | Expected Caller | |----------|------|-----------------| | `onFlashLoan(...)` | `Vault.sol:L200` | Flash loan provider | --- ## Files Analyzed - `path/to/file1.sol` (X state-changing entry points) - `path/to/file2.sol` (X state-changing entry points) ``` ## Filtering When user specifies a directory filter: - Only analyze files within that path - Note the filter in the report header - Example: "Analyze only `src/core/`" → scope = `src/core/` ## Analysis Guidelines 1. **Be thorough**: Don't skip files. Every state-changing externally callable function matters. 2. **Be conservative**: When uncertain about access level, flag for review rather than miscategorize. 3. **Skip read-only**: Exclude `view`, `pure`, and equivalent read-only functions. 4. **Note inheritance**: If a function's access control comes from a parent contract, note this. 5. **Track modifiers**: List all access-related modifiers/decorators applied to each function. 6. **Identify patterns**: Look for common patterns like: - Initializer functions (often unrestricted on first call) - Upgrade functions (high-privilege) - Emergency/pause functions (guardian-level) - Fee/parameter setters (admin-level) - Token transfers and approvals (often public) ## Common Role Patterns by Protocol Type | Protocol Type | Common Roles | |---------------|--------------| | DEX | `owner`, `feeManager`, `pairCreator` | | Lending | `admin`, `guardian`, `liquidator`, `oracle` | | Governance | `proposer`, `executor`, `canceller`, `timelock` | | NFT | `minter`, `admin`, `royaltyReceiver` | | Bridge | `relayer`, `guardian`, `validator`, `operator` | | Vault/Yield | `strategist`, `keeper`, `harvester`, `manager` | ## Rationalizations to Reject When analyzing entry points, reject these shortcuts: - "This function looks standard" → Still classify it; standard functions can have non-standard access control - "The modifier name is clear" → Verify the modifier's actual implementation - "This is obviously admin-only" → Trace the actual restriction; "obvious" assumptions miss subtle bypasses - "I'll skip the callbacks" → Callbacks define trust boundaries; always include them - "It doesn't modify much state" → Any state change can be exploited; include all non-view functions ## Error Handling If a file cannot be parsed: 1. 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Check upstream before adopting a new version. - [Skill definition ↗](https://github.com/trailofbits/skills/blob/82fe8226252622fa807643bdca1710901198553a/plugins/entry-point-analyzer/skills/entry-point-analyzer/SKILL.md) Checked 2026-10-14 https://github.com/trailofbits/skills/blob/82fe8226252622fa807643bdca1710901198553a/plugins/entry-point-analyzer/skills/entry-point-analyzer/SKILL.md Supports: Workflow and stated scope - [Repository licence ↗](https://github.com/trailofbits/skills/blob/82fe8226252622fa807643bdca1710901198553a/LICENSE) Checked 2026-10-14 https://github.com/trailofbits/skills/blob/82fe8226252622fa807643bdca1710901198553a/LICENSE Supports: Redistribution terms KEEP COMPARING ## Other approaches to consider. Related by category or shared topics. These are alternatives to inspect, not a measured quality order. [### Algorand vulnerability scanner ↗ Pins Trail of Bits' Algorand scanner, which treats a short or empty coverage table as an unfinished scan and does not let a clean Tealer run stand in for patterns it never examined.](/skills/trailofbits-algorand-vulnerability-scanner/)[### Solana vulnerability scanner ↗ Pins Trail of Bits' Solana scanner, which refuses a short coverage table, keeps the version-scoped row, and does not treat passing lints or an Anchor attribute as a full check.](/skills/trailofbits-solana-vulnerability-scanner/)[### CodeQL ↗ Drives a CodeQL scan and warns that each Bash call is a fresh shell, so state must be written to files.](/skills/trailofbits-codeql/) [AI Tools ↗](/tools/)[Skills ↗](/skills/)[Agents ↗](/agents/)[MCP Servers ↗](/mcp-servers/)[Workflows ↗](/workflows/) ## Continue your investigation - [Choose a toolkit](/tools/) - [Inspect execution hosts](/agents/) - [Check tool access](/mcp-servers/) - [Check project dependencies](/check-repo/)