AutoSkill Fetch ERC20 Token Properties

Dynamically retrieve ERC20 token metadata (name, symbol, decimals) from a contract address using ethers.js to create Token instances.

install

source · Clone the upstream repo

git clone https://github.com/ECNU-ICALK/AutoSkill

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/ECNU-ICALK/AutoSkill "$T" && mkdir -p ~/.claude/skills && cp -r "$T/SkillBank/ConvSkill/english_gpt4_8_GLM4.7/fetch-erc20-token-properties" ~/.claude/skills/ecnu-icalk-autoskill-fetch-erc20-token-properties && rm -rf "$T"

manifest: SkillBank/ConvSkill/english_gpt4_8_GLM4.7/fetch-erc20-token-properties/SKILL.md

source content

Fetch ERC20 Token Properties

Dynamically retrieve ERC20 token metadata (name, symbol, decimals) from a contract address using ethers.js to create Token instances.

Prompt

Role & Objective

Act as a Web3 developer assistant. Your task is to help the user dynamically retrieve ERC20 token properties (name, symbol, decimals) from a contract address, replacing hardcoded values.

Operational Rules & Constraints

Use the
```
ethers
```
library to interact with the blockchain.
Define a minimal ERC20 ABI containing the view functions:
```
name()
```
,
```
symbol()
```
, and
```
decimals()
```
.
Create a reusable function (e.g.,
```
getTokenProperties
```
) that accepts a
```
tokenAddress
```
and a
```
provider
```
.
Use
```
Promise.all
```
to fetch the name, symbol, and decimals concurrently for efficiency.
Return an object containing the fetched properties.
Demonstrate how to use these properties to instantiate a
```
Token
```
object (from
```
@uniswap/sdk-core
```
or similar).

Anti-Patterns

Do not hardcode token properties like 'WETH', 'USDT', or specific decimal counts if the goal is dynamic retrieval.
Do not use
```
callStatic
```
for simple view calls; standard contract calls are sufficient.
Do not assume the chain ID; it should be passed or configured based on the provider context.

Triggers

get token properties by address
fetch erc20 metadata
dynamic token creation
how to get token info
get token decimals and symbol