Crate Map

All crates in the skelegent workspace, organized by architectural layer.

Layer 0 – Protocol Traits

Crate	Description
`layer0`	Protocol traits (`Operator`, `Dispatcher`, `StateStore`, `Environment`), middleware traits (`DispatchMiddleware`, `StoreMiddleware`, `ExecMiddleware`), message types, and error types. The stability contract.

Layer 1 – Operator Implementations

Crate	Description
`skg-turn`	Shared toolkit: `Provider` trait, `InferRequest`, `InferResponse`, `TokenUsage`, provider request/response types, content conversions.
`skg-provider-anthropic`	Anthropic Claude API provider. Implements `Provider` for the Messages API.
`skg-provider-openai`	OpenAI API provider. Implements `Provider` for the Chat Completions API.
`skg-provider-ollama`	Ollama local model provider. Implements `Provider` for the Ollama API.
`skg-provider-codex`	OpenAI Codex (Responses API) provider. Implements `Provider` for the Responses API.
`skg-provider-router`	Provider router. Selects an underlying provider per request using pluggable routing policy.
`skg-tool`	`ToolDyn` trait, `ToolRegistry`, `AliasedTool`. Object-safe tool abstraction.
`skg-context`	Conversation context assembly and compaction strategies.
`skg-mcp`	MCP (Model Context Protocol) client. Wraps MCP server tools as `ToolDyn` implementations.
`skg-context-engine`	Composable three-phase context engine (assembly, inference, reaction). Implements `Operator` with tool execution.
`skg-tool-macro`	Proc macro for `#[skg_tool]` attribute. Generates `ToolDyn` implementations from async functions.
`skg-op-single-shot`	Single-shot operator. Implements `Operator` with one model call and no tools.
`skg-turn-kit`	Turn engine primitives: `DispatchPlanner`, `ConcurrencyDecider`, `BatchExecutor` (execution-only), `SteeringSource`.

Layer 2 – Orchestration

Crate	Description
`skg-orch-local`	In-process orchestrator. Implements `Dispatcher` (layer0), `Signalable`, and `Queryable` (skg-effects-core) with tokio tasks.
`skg-orch-kit`	Shared utilities for orchestrator implementations.
`skg-orch-env`	Environment-aware orchestrator. Routes operators through `Environment::run`.
`skg-run-core`	Portable durable run/control primitives and kernel above Layer 0.
`skg-effects-core`	Effect handler trait (`EffectHandler`), `Signalable`, `Queryable`, errors, and policy — no implementations.
`skg-effects-local`	Local in-process `EffectHandler` implementation (in-order, best-effort).
`skg-runner`	Runner binary for containerized/operator-hosted execution with gRPC + healthcheck endpoints.

Layer 3 – State

Crate	Description
`skg-state-memory`	In-memory state store. Implements `StateStore` with `HashMap`. Ephemeral.
`skg-state-fs`	Filesystem state store. Implements `StateStore` with file-backed persistence.
`skg-state-proxy`	gRPC proxy for `StateStore`, enabling cross-container state access.

Layer 4 – Environment and Credentials

Crate	Description
`skg-env-local`	Local environment. Implements `Environment` with no isolation (passthrough).
`skg-env-docker`	Docker-backed environment implementation for isolated operator execution.
`skg-secret`	Secret resolution trait. Defines the interface for secret backends.
`skg-secret-vault`	HashiCorp Vault secret backend.
`skg-crypto`	Cryptographic utilities and primitives.
`skg-auth`	Authentication and authorization abstractions.
`skg-auth-omp`	OMP credential provider that reads Oh My Pi OAuth tokens from `agent.db`.

Layer 5 – Cross-Cutting

Crate	Description
`skg-hook-security`	Security middleware: `RedactionMiddleware` (pattern-based content redaction) and `ExfilGuardMiddleware` (data-loss-prevention guardrails).
`skg-hook-recorder`	Universal operation recorder middleware. Captures dispatch events for testing and debugging.
`skg-hook-retry`	Retry middleware with configurable backoff and deadline-aware dispatch retries.

Umbrella

Crate	Description
`skelegent`	Umbrella crate. Feature-gated re-exports of all layers.

A2A

Crate	Description
`skg-a2a-core`	A2A protocol wire types and conversions.

Examples

Crate	Description
`custom-operator-barrier`	Example custom operator with barrier scheduling and steering (workspace member at `examples/custom_operator_barrier`).
`hello-claude`	Minimal example binary that wires OMP auth plus a single-shot Claude operator.
`middleware_approval`	Example demonstrating approval-gated middleware.
`middleware_echo`	Example demonstrating echo middleware.
`middleware_recorder`	Example demonstrating recorder middleware.

Summary

Layer	Crates
0	1
1	13
2	7
3	3
4	7
5	3
Umbrella	1
A2A	1
Examples	5
Total	41