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// Skill profile

Skylens Transaction Analysis

Name: Skylens Transaction Analysis
Author: certik-ai

name: skylens-transaction-analysis

by certik-ai · published 2026-03-22

数据处理API集成加密货币

Total installs

Stars

★ 0

Last updated

2026-03

// Install command

$ claw add gh:certik-ai/certik-ai-skylens-transaction-analysis

View on GitHub

// Full documentation

---

name: skylens-transaction-analysis

description: Inspects one EVM transaction with Skylens APIs and returns human-readable trace, balance, storage, and nonce changes. Use when the user asks for tx-level investigation on supported chains (for example Ethereum) via `get-trace`, `balance-change`, `state-change`, or `nonce-change`.

license: MIT

compatibility: Compatible with Cursor/Codex Agent Skills, Claude Agent Skills runtimes (Claude Code/claude.ai/API), and OpenClaw Skills. Requires Python >=3.10, outbound HTTPS access to skylens.certik.com, a zstd backend (Python 3.14+ `compression.zstd` or pip package `zstandard`), and permission to execute `{skillDir}/scripts/skylens.py`.

metadata:

url: https://skylens.certik.com/

script: <skillDir>/scripts/skylens.py

primary-commands: get-trace balance-change state-change nonce-change list-source-files get-source-file

---

# Skylens Transaction Analysis

Use `{skillDir}/scripts/skylens.py` to inspect one transaction with Skylens APIs.

When To Use This Skill

Use this skill when the user wants transaction-level investigation for a single EVM transaction on a supported chain. Typical triggers:

The user provides a transaction hash and asks what happened.

The user wants an execution trace or call flow for one transaction.

The user asks which balances changed for a specific address in one transaction.

The user asks which storage slots changed for a contract in one transaction.

The user asks whether an address nonce changed in one transaction.

The user wants contract source files tied to addresses touched by one transaction.

Quick Triage Workflow

1. Run `get-trace` to identify key calls/contracts.

2. Run `list-source-files` for suspicious contract addresses to enumerate available files.

3. Run `get-source-file` with selected `--FILE_INDEX` (and optional `--OUTPUT`) to fetch source code.

4. Run `state-change` for suspicious contract addresses (storage deltas).

5. Run `nonce-change` for addresses that sent/triggered actions.

6. Run `balance-change` for holder asset impact.

Commands

`get-trace`: readable execution trace (paged)

`balance-change`: balance deltas for one holder

`state-change`: storage slot changes for one address

`nonce-change`: nonce before/after for one address

`list-source-files`: list contract source files (or AST-only files) by tx

`get-source-file`: get one contract file by index from `list-source-files`

Supported Chains

`eth`, `bsc`, `polygon`, `optimism`, `arb`, `base`, `blast`, `avalanche`, `scroll`, `linea`, `sonic`, `kaia`, `world`, `unichain`, `hyperliquid`, `plasma`

Shared Parameter Rules

`tx_hash`: full hash with `0x`

`chain`: must be one of supported chains above

`address` / `holder`: case-insensitive, accepts with or without `0x`

`get-trace`

CLI:

`{skillDir}/scripts/skylens.py get-trace --TX <tx_hash> --CHAIN <chain> --OFFSET 0 --SIZE 100`

Output:

Prints one readable trace line per event.

Prints only `[offset, offset+size)`.

Output format:

`{index}({depth}) {op} {description} [source: ...]`

Source suffix (optional):

`source: [c: {contractAddress}, f:{fileIdx}, s:{start}, o:{length}]`

Current event variants:

`callEvent`

`createEvent`

`storageAccessEvent`

`logEvent`

`keccak256Event`

`balance-change`

CLI:

`{skillDir}/scripts/skylens.py balance-change --TX <tx_hash> --CHAIN <chain> --HOLDER <address>`

Output:

Prints balance deltas for the target `holder`.

May include native/token/NFT sections when available.

Printed shapes:

`BalanceOf Native ETH: holder=... before=... after=... delta=...`

`BalanceOf Token: token=... holder=... before=... after=... delta=...`

`BalanceOf NFT: collection=... holder=... before=... after=... delta=...`

`state-change`

CLI:

`{skillDir}/scripts/skylens.py state-change --TX <tx_hash> --CHAIN <chain> --ADDRESS <address>`

Output:

Prints storage changes for the target `address` only.

Printed shape:

`Storage: address=... slot=0x... before=... after=...`

`nonce-change`

CLI:

`{skillDir}/scripts/skylens.py nonce-change --TX <tx_hash> --CHAIN <chain> --ADDRESS <address>`

Output:

Prints nonce before/after for the target `address`.

Printed shape:

`Nonce: address=... before=... after=...`

`list-source-files`

CLI:

`{skillDir}/scripts/skylens.py list-source-files --TX <tx_hash> --CHAIN <chain> --ADDRESS <contract_address>`

Output:

Lists source files for the target contract.

Includes file indexes used by `get-source-file`.

Printed shape:

`Contract: ...`

`Files: ...`

`[index] fileName (artifact=..., available=source|none)`

`get-source-file`

CLI:

`{skillDir}/scripts/skylens.py get-source-file --TX <tx_hash> --CHAIN <chain> --ADDRESS <contract_address> --FILE_INDEX <index> [--OUTPUT <file_path>]`

Output:

Returns source content for one selected file index.

If `--OUTPUT` is provided, saves source content to that path.

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