Arcan

Rust-first agent runtime and daemon focused on harness quality, typed streaming events, and replayable state.

Install

cargo install arcan

Workspace

• crates/arcan-core: protocol, state, runtime contracts, orchestrator loop
• crates/arcan-harness: sandbox and filesystem guardrails, hashline edit primitives
• crates/arcan-store: append-only session event repositories
• crates/arcan-provider: LLM provider implementations (Anthropic Claude)
• crates/arcand: agent loop, SSE server, and HTTP routing
• crates/arcan-lago: Lago event-sourced persistence bridge
• crates/arcan: installable binary (cargo install arcan)

Usage

# Run with mock provider
cargo run -p arcan

# Run with Anthropic Claude
ANTHROPIC_API_KEY=sk-ant-... cargo run -p arcan

# CLI options
arcan --port 3000 --data-dir .arcan --max-iterations 10

Docs

• docs/architecture.md
• docs/roadmap.md
• docs/vision-and-status.md
• docs/lago-integration.md

Verify

cargo check
cargo test
cargo clippy