sisyclaude

SisyClaude — Multi-Agent Orchestration for Claude Code

A port of oh-my-openagent's Greek mythology-themed agent system, brought back to Claude Code.

Background

This project exists because of work that happened outside the Anthropic ecosystem — and the story is worth telling.

In early 2026, oh-my-openagent (originally "oh-my-opencode") by @code-yeongyu introduced a multi-agent orchestration layer for OpenCode — a model-agnostic open-source coding agent. The system used Greek mythology-themed agents (Prometheus for planning, Hephaestus for deep implementation, Oracle for architecture decisions, etc.) to route tasks to the right specialist. It grew to 43k+ GitHub stars and became one of the most popular plugins in the OpenCode ecosystem.

Around the same time, Anthropic moved to block third-party tools from using Claude subscription credentials via OAuth, citing terms-of-service violations around identity spoofing and token routing. This action — which broke OpenCode, Cline, RooCode, and others overnight — was partly attributed to oh-my-openagent's success. The dispute escalated through formal legal demands, and by March 2026 OpenCode had removed all Anthropic integration entirely.

The oh-my-openagent community built something genuinely innovative during and despite that conflict. Their multi-agent architecture — the idea that a coding assistant should delegate rather than do everything in one context window — proved itself across thousands of real-world projects.

What This Port Is

SisyClaude takes the agent architecture and design philosophy pioneered by oh-my-openagent and adapts it for Claude Code's native sub-agent system. Instead of TypeScript orchestration running outside Claude, the agents are defined as markdown agent definitions that Claude Code loads natively.

The name "SisyClaude" is intentional — this is a reduced, Claude-specific adaptation, not a replacement for the original. Think of it as a tribute, not a competitor.

What works well:

• Agent specialization (planner, executor, researcher, reviewer, etc.)
• Parallel delegation for independent tasks
• Structured verification workflows
• The core insight: an orchestrator that delegates beats a single agent doing everything

What oh-my-openagent does better:

• Model routing across 75+ providers (SisyClaude is Claude-only)
• Dynamic cost optimization by routing cheap tasks to cheaper models across providers
• Deeper integration with OpenCode's plugin ecosystem
• The full TypeScript orchestration layer with programmatic control flow
• Active community development with faster iteration cycles

If you want the full experience with provider flexibility, go use oh-my-openagent. This port is for people who prefer (or need) to stay within Claude Code and want better orchestration than the vanilla experience.

Top-Level Orchestrator

Sisyphus — Main orchestrator: classifies intent, delegates to specialists, verifies results. Runs at the top level (not a sub-agent, because the Agent tool cannot nest) and is loaded into Claude Code via the sisyclaude shell alias added by /sisyclaude:activate. Run sisyclaude instead of claude to start a session with Sisyphus's instructions in effect.

Agents

Agent	Role	Model	Invocation
Atlas	Plan executor — delegates ALL implementation, never codes	Opus	@atlas
Hephaestus	Autonomous deep worker — never asks, just completes	Opus	@hephaestus
Prometheus	Strategic planner — interviews, researches, writes plans	Opus	@prometheus
Oracle	Architecture consultant — read-only, effort-tagged advice	Opus	@oracle
Momus	Plan reviewer — approval-biased, max 3 issues per rejection	Sonnet	@momus
Metis	Pre-planning analyst — catches hidden requirements, AI slop	Opus	@metis
Explore	Fast codebase search — structured results, parallel execution	Haiku	@explore
Librarian	OSS docs researcher — evidence-based with GitHub permalinks	Sonnet	@librarian
Socrates	Design critic — adversarial-constructive idea stress-testing	Opus	@socrates / /brainstorm

Skills

Skill	What it does
/brainstorm	Spawns Socrates for interactive design challenge dialogue
/sisyclaude:activate	Activates SisyClaude as default orchestrator
/sisyclaude:deactivate	Deactivates SisyClaude, restores original CLAUDE.md

Installation

As a Plugin

/plugin marketplace add Whiskey-Tango-Foxtrot-GmbH/sisyclaude
/plugin install sisyclaude@sisyclaude

Activate

/sisyclaude:activate

Known Incompatibilities