Change RPC provider to Zan (#3979)

<!-- Reference any GitHub issues resolved by this PR -->

Closes #3973 

## Introduced changes

<!-- A brief description of the changes -->

- Change to new free public provider

## Checklist

<!-- Make sure all of these are complete -->

- [x] Linked relevant issue
- [ ] Updated relevant documentation
- [ ] Added relevant tests
- [x] Performed self-review of the code
- [ ] Added changes to `CHANGELOG.md`

Author: MKowalski8

.github/workflows/_build-binaries.yml

@@ -11,9 +11,6 @@ on:
         required: false
         type: string
 
-env:
-  ALCHEMY_API_KEY: ${{ secrets.ALCHEMY_API_KEY }}
-
 jobs:
   build-binaries:
     name: Build ${{ matrix.target }}

.github/workflows/ci.yml

@@ -12,9 +12,6 @@ concurrency:
   group: ${{ github.head_ref || github.run_id }}
   cancel-in-progress: true
 
-env:
-  ALCHEMY_API_KEY: ${{ secrets.ALCHEMY_API_KEY }}
-
 jobs:
   test-forge-unit:
     name: Test Forge / Unit Tests

.github/workflows/release.yml

@@ -61,7 +61,6 @@ jobs:
     needs: verify-version
     if: ${{ needs.verify-version.outputs.versionIsValid == 'true' }}
     uses: ./.github/workflows/_build-binaries.yml
-    secrets: inherit
     with:
       version: ${{ needs.verify-version.outputs.version }}
 

.github/workflows/scheduled.yml

@@ -11,9 +11,6 @@ on:
     - cron: '0 0 * * 3'
   workflow_dispatch:
 
-env:
-  ALCHEMY_API_KEY: ${{ secrets.ALCHEMY_API_KEY }}
-
 jobs:
   get-scarb-versions:
     if: github.event.repository.fork == false
@@ -199,7 +196,6 @@ jobs:
   build-binaries:
     needs: [ get-version ]
     uses: ./.github/workflows/_build-binaries.yml
-    secrets: inherit
     with:
       version: ${{ needs.get-version.outputs.version }}-test.${{ github.run_id }}
 

CHANGELOG.md

@@ -22,6 +22,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 #### Changed
 
 - `sncast script init` now longer adds `cairo_test` as dependency in `Scarb.toml`
+- Replaced the free RPC provider to Zan
 
 #### Fixed
 

Cross.toml

@@ -1,6 +1,3 @@
-[build.env]
-passthrough = ["ALCHEMY_API_KEY"]
-
 # TODO(#3790) Setup cross for native
 #[build]
 #pre-build = [

crates/forge/src/new.rs

@@ -7,6 +7,7 @@ use indoc::formatdoc;
 use scarb_api::version::scarb_version;
 use scarb_api::{ScarbCommand, ensure_scarb_available};
 use semver::Version;
+use shared::consts::FREE_RPC_PROVIDER_URL;
 use std::env;
 use std::fs::{self, OpenOptions};
 use std::io::Write;
@@ -153,14 +154,15 @@ fn create_snfoundry_manifest(path: &PathBuf) -> Result<()> {
         # and https://foundry-rs.github.io/starknet-foundry/projects/configuration.html for more information
 
         # [sncast.default]                                         # Define a profile name
-        # url = "<YOUR_RPC_PROVIDER>" # Url of the RPC provider
+        # url = "{default_rpc_url}" # Url of the RPC provider
         # accounts-file = "../account-file"                        # Path to the file with the account data
         # account = "mainuser"                                     # Account from `accounts_file` or default account file that will be used for the transactions
         # keystore = "~/keystore"                                  # Path to the keystore file
         # wait-params = {{ timeout = 300, retry-interval = 10 }}     # Wait for submitted transaction parameters
         # block-explorer = "StarkScan"                             # Block explorer service used to display links to transaction details
         # show-explorer-links = true                               # Print links pointing to pages with transaction details in the chosen block explorer
         "#,
+            default_rpc_url = FREE_RPC_PROVIDER_URL,
         },
     )?;
 
@@ -305,7 +307,7 @@ fn add_fork_config(document: &mut DocumentMut) -> Result<()> {
 
     let mut fork_table = Table::new();
     fork_table.insert("name", Item::Value(Value::from("SEPOLIA_LATEST")));
-    fork_table.insert("url", Item::Value(Value::from("<YOUR_RPC_PROVIDER>")));
+    fork_table.insert("url", Item::Value(Value::from(FREE_RPC_PROVIDER_URL)));
 
     let mut block_id_table = Table::new();
     block_id_table.insert("tag", Item::Value(Value::from("latest")));

crates/forge/tests/e2e/new.rs

@@ -9,6 +9,7 @@ use indoc::{formatdoc, indoc};
 use itertools::Itertools;
 use regex::Regex;
 use scarb_api::ScarbCommand;
+use shared::consts::FREE_RPC_PROVIDER_URL;
 use shared::test_utils::output_assert::assert_stdout_contains;
 use snapbox::assert_matches;
 use snapbox::cmd::Command as SnapboxCommand;
@@ -189,7 +190,7 @@ fn get_expected_manifest_content(template: &Template, validate_snforge_std: bool
             r#"
             [[tool.snforge.fork]]
             name = "SEPOLIA_LATEST"
-            url = "<YOUR_RPC_PROVIDER"
+            url = "{FREE_RPC_PROVIDER_URL}"
             block_id = {{ tag = "latest" }}
         "#
         )

crates/shared/src/consts.rs

@@ -1,3 +1,4 @@
 pub const EXPECTED_RPC_VERSION: &str = "0.10.0";
 pub const RPC_URL_VERSION: &str = "v0_10";
 pub const SNFORGE_TEST_FILTER: &str = "SNFORGE_TEST_FILTER";
+pub const FREE_RPC_PROVIDER_URL: &str = "https://api.zan.top/public/starknet-sepolia/rpc/v0_10";

crates/sncast/src/helpers/rpc.rs

@@ -7,9 +7,6 @@ use clap::Args;
 use shared::consts::RPC_URL_VERSION;
 use shared::verify_and_warn_if_incompatible_rpc_version;
 use starknet_rust::providers::{JsonRpcClient, jsonrpc::HttpTransport};
-use std::env;
-
-const ALCHEMY_API_KEY: &str = env!("ALCHEMY_API_KEY");
 
 #[derive(Args, Clone, Debug, Default)]
 #[group(required = false, multiple = false)]
@@ -66,33 +63,29 @@ impl RpcArgs {
 }
 
 pub enum FreeProvider {
-    Alchemy,
+    Zan,
 }
 
 impl FreeProvider {
     #[must_use]
     pub fn semi_random() -> Self {
-        Self::Alchemy
+        Self::Zan
     }
 
     #[must_use]
     pub fn mainnet_rpc(&self) -> String {
         match self {
-            FreeProvider::Alchemy => {
-                format!(
-                    "https://starknet-mainnet.g.alchemy.com/starknet/version/rpc/{RPC_URL_VERSION}/{ALCHEMY_API_KEY}"
-                )
+            FreeProvider::Zan => {
+                format!("https://api.zan.top/public/starknet-mainnet/rpc/{RPC_URL_VERSION}")
             }
         }
     }
 
     #[must_use]
     pub fn sepolia_rpc(&self) -> String {
         match self {
-            FreeProvider::Alchemy => {
-                format!(
-                    "https://starknet-sepolia.g.alchemy.com/starknet/version/rpc/{RPC_URL_VERSION}/{ALCHEMY_API_KEY}"
-                )
+            FreeProvider::Zan => {
+                format!("https://api.zan.top/public/starknet-sepolia/rpc/{RPC_URL_VERSION}")
             }
         }
     }
@@ -143,15 +136,15 @@ mod tests {
     #[tokio::test]
     #[ignore = "TODO: (#3937) New RPC URL is not available yet"]
     async fn test_mainnet_url_happy_case() {
-        let provider = get_provider(&Network::free_mainnet_rpc(&FreeProvider::Alchemy)).unwrap();
+        let provider = get_provider(&Network::free_mainnet_rpc(&FreeProvider::Zan)).unwrap();
         let spec_version = provider.spec_version().await.unwrap();
         assert!(is_expected_version(&Version::parse(&spec_version).unwrap()));
     }
 
     #[tokio::test]
     #[ignore = "TODO: (#3937) New RPC URL is not available yet"]
     async fn test_sepolia_url_happy_case() {
-        let provider = get_provider(&Network::free_sepolia_rpc(&FreeProvider::Alchemy)).unwrap();
+        let provider = get_provider(&Network::free_sepolia_rpc(&FreeProvider::Zan)).unwrap();
         let spec_version = provider.spec_version().await.unwrap();
         assert!(is_expected_version(&Version::parse(&spec_version).unwrap()));
     }
@@ -186,6 +179,6 @@ mod tests {
         };
 
         let url = rpc_args.get_url(&config).await.unwrap();
-        assert_eq!(url, Network::free_mainnet_rpc(&FreeProvider::Alchemy));
+        assert_eq!(url, Network::free_mainnet_rpc(&FreeProvider::Zan));
     }
 }