夜居 / Yoi agent

Yoi is an agent runtime for building, running, and orchestrating LLM Workers while preserving explicit history, scoped capabilities, and developer-controlled workflows.

1. Yoi agent

Yoi focuses on long-running agent operation rather than one-off prompt execution. A named Worker can keep durable session history, run with explicit tool and filesystem authority, delegate bounded work to child Workers, and be inspected or restored through CLI/TUI surfaces.

Main highlights:

• Named long-running Workers with durable session and metadata records.
• Explicit tool permissions and filesystem scopes.
• Multi-agent orchestration with scoped coder/reviewer Workers.
• Profile, Manifest, and prompt-based runtime configuration.
• Local Tickets and workflow files for auditable project coordination.
• TUI and CLI entry points, including the yoi panel workspace Dashboard and single-Worker Console.

Yoi is actively dogfooded in this repository. Public APIs, configuration formats, and workflows may still change.

2. Quick Install

From source:

cargo build --release -p yoi
./target/release/yoi --help

With Nix:

nix build .#yoi
./result/bin/yoi --help

3. Getting Started

yoi --help
yoi
yoi panel
yoi --worker <name>
yoi worker --help

Typical flow:

1. Configure providers, models, profiles, prompts, and scopes.
2. Start or attach to a named Worker in the Console, or inspect workspace activity in the Dashboard.
3. Use explicit tools and scoped delegation for multi-agent work.
4. Record project work through Tickets, workflow files, and git history.

Runtime surfaces use yoi, .yoi, ~/.yoi, and YOI_*.

4. Documentation

Start with docs/README.md.

Key docs:

• docs/design/overview.md — architecture and crate ownership map.
• docs/design/context-history.md — history/context invariants.
• docs/design/worker-session-state.md — Worker identity, metadata, and session logs.
• docs/design/profiles-manifests-prompts.md — Profiles, Manifests, and prompt resources.
• docs/design/tool-permissions-scope.md — tool policy and filesystem scope.
• docs/development/work-items.md — Ticket workflow and project records.
• docs/development/validation.md — validation expectations.

5. Development

This repository dogfoods Yoi to develop Yoi. Work is tracked through .yoi/tickets/ and yoi ticket ...; git history plus Ticket files are the authoritative project record.

Common checks:

yoi ticket doctor
git diff --check
cargo fmt --check
cargo check --workspace --all-targets
cargo test --workspace

Real-process E2E testing is opt-in. Do not design or implement E2E coverage unless the work explicitly requires E2E; otherwise protect the narrower parser, API, protocol, authority, or runtime boundary.

License: MIT. See LICENSE.