> ## Documentation Index
> Fetch the complete documentation index at: https://developers.circle.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Blockchain infrastructure

> The blockchain infrastructure Circle Wallets provides, including broadcasting, indexing, gas fees, and transaction bundling.

Circle Wallets provides built-in blockchain infrastructure on all blockchains
listed in [Supported blockchains](/wallets/supported-blockchains), except for
NEAR and the Other EVM blockchains category. This eliminates the need to
integrate third-party providers for the following:

* **Broadcasting**: Circle broadcasts signed transactions to the blockchain. To
  use your own node provider, use the [Signing APIs](/wallets/signing-apis) to
  sign transactions and broadcast them yourself.
* **Indexing**: Circle indexes transfer events and balances in real time,
  serving data through low-latency APIs and
  [webhook notifications](/api-reference/wallets/common/create-subscription).
* **[Gas Station](/wallets/gas-station)**: Circle manages gas fees so users
  don't need to hold native tokens.
* **Bundler**: Circle bundles user operations for smart contract account (SCA)
  and modular smart contract account (MSCA) wallets, so you can initiate
  transactions without constructing them manually.