# Web3 SDK

Use web3 SDK's to connect with blockchains, send and sign transactions, and more.

At the moment, only sets of methods described in [Ethereum API documentation](/blockchain-apis/ethereum-api.md) are available from API interfaces, when working through WatchData node, and we are actively working on adding new methods.

{% content-ref url="/pages/jvXr5jOqmdUbQQxkDfKv" %}
[Web3.js](/web3/web3-sdk/web3.js.md)
{% endcontent-ref %}

{% content-ref url="/pages/WFR276RGiL21AdKQi56r" %}
[Web3.py](/web3/web3-sdk/web3.py.md)
{% endcontent-ref %}

{% content-ref url="/pages/bTkS4PRfmC4yMoT7DDrd" %}
[Ethers.js](/web3/web3-sdk/ethers.js.md)
{% endcontent-ref %}

{% content-ref url="/pages/AnMWhrc14F8xRq2Ls7EB" %}
[Ethereum.rb](/web3/web3-sdk/ethereum.rb.md)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.watchdata.io/web3/web3-sdk.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.