feat: Implement Rust Copilot SDK with JSON-RPC support

- Add error handling module for SDK operations.
- Create generated module for session events.
- Define session event types for communication.
- Implement JSON-RPC client for bidirectional communication.
- Add session management for interactive conversations.
- Introduce tool system for defining and handling custom tools.
- Define core types for the Copilot SDK, including client options and system messages.
- Add tests for JSON-RPC functionality, tool system, and core types.

Author: danielsan

README.md

@@ -16,6 +16,7 @@ The GitHub Copilot SDK exposes the same engine behind Copilot CLI: a production-
 | **Python**               | [`cookbook/python/`](./cookbook/python/README.md) | `pip install github-copilot-sdk`          |
 | **Go**                   | [`cookbook/go/`](./cookbook/go/README.md)         | `go get github.com/github/copilot-sdk/go` |
 | **.NET**                 | [`cookbook/dotnet/`](./cookbook/dotnet/README.md) | `dotnet add package GitHub.Copilot.SDK`   |
+| **Rust**                 | [`rust/`](./rust/README.md)                       | `cargo add github-copilot-sdk`            |
 
 See the individual SDK READMEs for installation, usage examples, and API reference.
 

justfile

@@ -3,13 +3,13 @@ default:
     @just --list
 
 # Format all code across all languages
-format: format-go format-python format-nodejs format-dotnet
+format: format-go format-python format-nodejs format-dotnet format-rust
 
 # Lint all code across all languages
-lint: lint-go lint-python lint-nodejs lint-dotnet
+lint: lint-go lint-python lint-nodejs lint-dotnet lint-rust
 
 # Run tests for all languages
-test: test-go test-python test-nodejs test-dotnet
+test: test-go test-python test-nodejs test-dotnet test-rust
 
 # Format Go code
 format-go:
@@ -71,13 +71,29 @@ test-dotnet:
     @echo "=== Testing .NET code ==="
     @cd dotnet && dotnet test test/GitHub.Copilot.SDK.Test.csproj
 
+# Format Rust code
+format-rust:
+    @echo "=== Formatting Rust code ==="
+    @cd rust && cargo fmt
+
+# Lint Rust code
+lint-rust:
+    @echo "=== Linting Rust code ==="
+    @cd rust && cargo clippy --all-targets -- -D warnings
+
+# Test Rust code
+test-rust:
+    @echo "=== Testing Rust code ==="
+    @cd rust && cargo test
+
 # Install all dependencies
 install:
     @echo "=== Installing dependencies ==="
     @cd nodejs && npm ci
     @cd python && uv pip install -e ".[dev]"
     @cd go && go mod download
     @cd dotnet && dotnet restore
+    @cd rust && cargo fetch
     @echo "✅ All dependencies installed"
 
 # Run interactive SDK playground

rust/.gitignore

@@ -0,0 +1,16 @@
+# Rust
+/target
+Cargo.lock
+**/*.rs.bk
+*.pdb
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db

rust/Cargo.toml

@@ -0,0 +1,45 @@
+[package]
+name = "github-copilot-sdk"
+version = "0.1.0"
+edition = "2021"
+authors = ["GitHub <opensource+copilot-sdk@github.com>"]
+description = "GitHub Copilot SDK for Rust - Embed Copilot's agentic workflows in your application"
+license = "MIT"
+repository = "https://github.com/github/copilot-sdk"
+homepage = "https://github.com/github/copilot-sdk"
+documentation = "https://docs.rs/github-copilot-sdk"
+readme = "README.md"
+keywords = ["github", "copilot", "ai", "agent", "sdk"]
+categories = ["api-bindings", "development-tools"]
+
+[dependencies]
+tokio = { version = "1.41", features = ["full"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+uuid = { version = "1.11", features = ["v4", "serde"] }
+thiserror = "2.0"
+async-trait = "0.1"
+
+[dev-dependencies]
+tokio-test = "0.4"
+chrono = "0.4"
+
+[lib]
+name = "github_copilot_sdk"
+path = "src/lib.rs"
+
+[[example]]
+name = "hello"
+path = "examples/hello.rs"
+
+[[example]]
+name = "tools"
+path = "examples/tools.rs"
+
+[[example]]
+name = "permissions"
+path = "examples/permissions.rs"
+
+[[example]]
+name = "mcp"
+path = "examples/mcp.rs"