API docs

Per-item Rust API documentation is published on docs.rs. This book covers concepts and worked examples; docs.rs is the source of truth for every type, trait, method, and feature flag. For a higher-level map of which crate owns which concern, see Crate overview.

Published crates

• paigasus-helikon — the facade; re-exports core and the feature-gated siblings.
• paigasus-helikon-core — trait surface, agent loop, event stream, carrier types (the dependency root).
• paigasus-helikon-macros — the #[tool] attribute and tools! proc macros.
• paigasus-helikon-providers-openai — OpenAI model adapter.
• paigasus-helikon-providers-anthropic — Anthropic model adapter.
• paigasus-helikon-sessions-sqlite — SQLite Session backend.
• paigasus-helikon-runtime-tokio — ephemeral Tokio runner.
• paigasus-helikon-runtime-axum — self-hosted HTTP/SSE/WebSocket agent server (AgentServer builder, 6 endpoints, replayable runs). See Axum Server Runtime.
• paigasus-helikon-runtime-temporal — durable Temporal-backed runner (TemporalRunner, crash-resume via Temporal history replay). See Runtimes.
• paigasus-helikon-runtime-agentcore — AWS Bedrock AgentCore container shim (AgentCoreServer, HTTP + MCP protocol contract). See Runtimes.
• paigasus-helikon-mcp — rmcp-based MCP client/server wrapper.
• paigasus-helikon-tools — sandboxed Read/Write/Edit/Bash tools (plus WebFetch/WebSearch behind the web feature).
• paigasus-helikon-evals — evaluation harness: JSONL datasets, the Evaluator trait with four built-ins, MockModel, and SQLite/Parquet trace sinks. See Observability & Evaluation.
• paigasus-helikon-cli — helikon / paigasus-helikon CLI binaries; publishes a lib target purely so cargo install paigasus-helikon-cli resolves, but that lib is internal and carries no stability guarantee. The binaries are documented in the CLI reference rather than docs.rs.

Most users depend only on the paigasus-helikon facade and enable the features they need; the facade docs link out to each sibling. Crate versions move every release — see Crate overview for the current numbers.

Publish status

All 18 non-internal crates now publish to crates.io — the last two stubs (paigasus-helikon-evals, paigasus-helikon-cli) ascended to real implementations in SMA-332/SMA-333, following -runtime-axum, -runtime-temporal, and -runtime-agentcore before them. The lone exception is paigasus-helikon-sessions-testkit, an internal Session conformance test harness that is publish = false by design, not a stub awaiting an ascend.

Building locally

cargo doc --workspace --all-features --no-deps --open