piscis-engine

OS / UI-neutral agent runtime kernel, extracted from openpiscis so it can be shared by multiple host products (the openpiscis desktop app and the codez AI IDE).

This repo contains only the host-agnostic layers — it never depends on Tauri, any GUI framework, or platform-specific tooling. Hosts inject all of that through the trait contracts in piscis-core.

Crates

Crate	Role
piscis-core	Pure contracts: HostRuntime / EventSink / Notifier / HostTools / SecretsStore + shared schema types. Depends only on serde / chrono / anyhow / async-trait.
piscis-kernel	The agent runtime: agent loop + harnesses, LLM adapters (claude / openai / qwen / deepseek / kimi / minimax / zhipu), SQLite store + encrypted settings, memory + Dream consolidation, policy / approval, scheduler, security, and platform-neutral tools (file_*, shell, code_run, web_search, ssh, mcp, …).
piscis-cli	Headless host adapter + the openpiscis-headless binary (NDJSON streaming, env-var secrets). Cross-platform agent runner for CI / evals / IDE integrations.

Build & test

cargo build                                   # whole workspace
cargo test  -p piscis-core -p piscis-kernel -p piscis-cli --lib --bins
cargo clippy -p piscis-core -p piscis-kernel -p piscis-cli --all-targets -- -D warnings
cargo build -p piscis-cli --release --bin openpiscis-headless

Consuming this engine from a host

Hosts depend on the crates as path (local dev) or git (CI / release) dependencies. With both repos checked out as siblings:

Projects/
├── piscis-engine/      ← this repo
├── openpiscis/         ← desktop host
└── codez/             ← AI IDE host

a host's Cargo.toml references:

[dependencies]
piscis-core   = { path = "../../piscis-engine/piscis-core" }
piscis-kernel = { path = "../../piscis-engine/piscis-kernel" }
# Swap for a git source once this repo has a published remote:
# piscis-kernel = { git = "https://…/piscis-engine", package = "piscis-kernel" }

Provenance

Extracted from openpiscis with git filter-repo, preserving the full commit history of piscis-core / piscis-kernel / piscis-cli. The desktop-coupled piscis_compact_one benchmark binary (which links piscis-desktop) was intentionally left behind in openpiscis.