A powerful EVM transaction forensics tool for Openclaw Skills that provides human-readable traces, state changes, and contract source code retrieval.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install skylens-transaction-analysis
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install skylens-transaction-analysis using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Skylens Transaction Analysis?
Skylens Transaction Analysis is a specialized skill designed for developers and security researchers who need to go beyond basic block explorers. By integrating with Skylens APIs, this tool allows AI agents to dissect any Ethereum Virtual Machine (EVM) transaction into human-readable components. It is an essential addition to any Openclaw Skills library for those working on blockchain debugging, security auditing, or protocol analysis.
The skill provides deep visibility into the execution lifecycle of a transaction, from call flows and storage slot modifications to holder balance deltas. It supports a vast array of chains, including Ethereum, BSC, Polygon, and several Layer 2 solutions, ensuring broad compatibility for decentralized application development and forensic investigations.
Skylens Transaction Analysis Use Cases
- Investigating the root cause of failed or reverted transactions on EVM-compatible chains.
- Auditing the movement of native assets, ERC-20 tokens, and NFTs within a single transaction.
- Reviewing contract storage changes to verify state transitions during protocol interactions.
- Retrieving verified contract source code and AST files directly related to specific transaction addresses.
- Performing security triage to identify suspicious contract calls or unauthorized balance changes.
How Skylens Transaction Analysis Works
- The user initiates an investigation by providing a transaction hash and specifying the chain (e.g., eth, base, or polygon).
- The agent uses the get-trace command to generate a human-readable execution flow, identifying specific call, create, and log events.
- The agent identifies relevant contract addresses and uses list-source-files to see available source code artifacts.
- Specific source files are retrieved using get-source-file to understand the logic behind the transaction.
- State-change and balance-change commands are executed to quantify the impact of the transaction on contract storage and user wallets.
- All findings are synthesized into a technical report for the user within the Openclaw Skills environment.
Skylens Transaction Analysis Setup
This skill requires Python 3.10 or higher and outbound HTTPS access to the Skylens API. You must also install a zstd backend for data decompression.
# Install the required zstandard package
pip install zstandard
# The skill can then be triggered via the main script
python scripts/skylens.py get-trace --TX <tx_hash> --CHAIN <chain>
Skylens Transaction Analysis Data Schema & Taxonomy
The skill organizes data into several distinct categories based on the inspection command:
| Data Type | Description | Key Fields |
|---|---|---|
| Trace | Execution flow events | Depth, Opcode, Description, Source Info |
| Balance Deltas | Changes in asset holdings | Native ETH, Token, NFT, Before/After values |
| State Changes | Contract storage updates | Storage Slot, Address, Before/After hex values |
| Source Files | Contract implementation code | File Index, Filename, Availability status |
Skylens Transaction Analysis Advanced Features
- Support for 15+ EVM chains including emerging networks like Sonic, World, and Unichain.
- Paged trace reporting with configurable offsets to handle high-complexity transactions efficiently.
- Granular nonce tracking for identifying account-level transaction sequencing.
- Seamless integration with high-performance agents and Openclaw Skills workflows for automated incident response.
SKILL.md
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