OpenCode Challenge Orchestrator: An Automated Code Review Platform with Multi-Agent Collaboration

challenge-orchestrator is a production-ready multi-agent orchestration platform. Built on OpenCode, it automates the classification, implementation, testing, review, and report generation of code challenges. It addresses the pain points of traditional manual reviews, such as time-consuming processes and subjective biases, and supports scenarios for roles like software engineering, QA, and data engineering. Through the division of labor and collaboration among multiple agents, it improves the consistency and efficiency of evaluations.

In technical interviews and code challenge evaluations for software development teams, manual reviews have issues like long time consumption and susceptibility to subjective factors. The challenge-orchestrator project, developed by German Bustos, provides a systematic solution to this problem by building an automated platform with multi-agent collaboration.

The platform's core architecture is a hierarchically collaborative agent system, defining four roles: Challenge Classifier (PDF parsing and classification), Professional Implementation Agent (code generation by domain), Supervisory Reviewer (quality control with up to 3 reworks), and Report Generator (output of structured evaluation reports). Starting from version v0.7.3, a two-dimensional review framework is adopted: Functional Acceptance (business correctness) and Technical Acceptance (engineering quality), which are combined into three levels: JUNIOR/INTERMEDIATE/SENIOR.

Each challenge execution creates an isolated workspace with a clear directory structure (input/implementation/tests/review/reports, etc.). The execution process is strict: Initialization → Classification → Implementation → Supervisory Review → Iterative Improvement → Report Generation. The production environment supports Docker runtime (to resolve environment differences), PDF report generation (requires browser runtime), and the architecture is extensible (adding new roles only needs three steps of configuration).

The project is applicable to technical interview evaluations (standardized processes, reduced subjective bias), code quality audits (identifying architectural debt, etc.), learning path verification (providing improvement suggestions), and multi-language/framework evaluations (extending agent support), improving evaluation efficiency and consistency.

The platform has limitations: complex challenges may exceed the model's context window, highly specialized fields require manual review, and creative evaluation is not as nuanced as human evaluation. It is recommended to use it as a preliminary screening tool, and combine manual reviews for boundary cases and senior position evaluations.

challenge-orchestrator demonstrates the potential of multi-agent collaboration in software engineering workflows, achieving reliable automated evaluation through specialized subtask splitting and collaboration protocols. Project link: https://github.com/germanbustos-sudo/challenge-orchestrator