Replacement of [Referendum #11](https://kusama.polkassembly.io/referenda/11)

The substrate-api-client is a Rust-library for connecting to a substrate-based node via RPC. It is an alternative to subxt, which provides a similar functionality. RPC clients are needed in any software component, connecting to a substrate parachain. Therefore it is advisable, that there is more than one client available for Rust developers. Apart from that, the substrate-api-client fills a gap, providing the possibility to create extrinsics in a no_std-environment. Thereby facilitating extrinsic creation from within trusted hardware (like Intel sgx). This has a big potential for further usage in IoT environments. Last but not least, the substrate-api-client has an easy-to-use interface and comes with many practical examples, which makes it a good option for new developers.

This proposal aims to fund:

1. maintenance and support for the substrate api client over 3 months (Nov-22 until Jan-23).

2. evaluation and design of two new features:
     - CLI-wallet implementation
     - full no_std-compatibility

See the [discussion](https://kusama.polkassembly.io/post/1923) and our [full proposal](https://docs.google.com/document/d/1hJzzmimz_pjK-_4TunKvs-i2Zot2_9Ob3qUr7BlzaNo/edit?usp=sharing) for the details.


PolkaSafe is a tool for managing assets in the Polkadot ecosystem that is secure and easy to use. The PolkaSafe team made changes to their proposal after not getting enough support from the community. They removed some expenses and reduced their budget request. They improved the speed of their app by migrating it to Next.js. PolkaSafe is being used by over 340 wallets and managing over $15 million across networks.

- The proposal is about replacing a previous referendum.
- It is about funding the maintenance and support of a Rust-library called substrate-api-client.
- The library helps connect to a substrate-based node via RPC and allows for creating extrinsics in a no_std-environment.
- The proposal also includes evaluating and designing two new features: a CLI-wallet implementation and full no_std-compatibility.
- There is a discussion and a full proposal document for more details.

#237 [Replacement of Referendum #11] Treasury Proposal: Maintenance for the substrate-api-client Nov-22 to Jan-23

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