ToolExperimental

opencastle

Name: opencastle
Rating: 3.0 (58 reviews)
Author: monkilabs

by monkilabs

Compose and route multiple coding agents into collaborative workflows

TypeScript

Updated May 18, 2026

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Summary

Orchestrates multiple coding-focused agents (Copilot, Claude Code, Cursor, Codex, etc.) to collaborate on developer workflows. Routes tasks between agents, aggregates results, and provides a TypeScript orchestration layer so different coding assistants can be composed in pipelines. Distinctive for its focus on coding agents and plug-and-play connectors for popular code-focused LLM services. plug-and-play connectors and the orchestration approach help teams manage multi-agent coding workflows.

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Key Benefits

As developers use multiple specialized coding assistants, understanding which agent to trust for which subtask becomes critical. OpenCastle makes it practical to compare agent outputs, route responsibilities, and gather interaction logs that form the basis for agent-to-agent evaluation and building agent track records. That traceability is a first step toward continuous A2A evaluation and building agent track records. The practical need for coupling agents is reinforced by standards like the Agent-to-Agent Protocol (A2A).

Ideal For

Teams building multi-agent coding workflows that need to orchestrate, compare, and log outputs from multiple code assistants. This aligns with the vision of a Multi-Agent System to coordinate diverse tools and agents.

Real-World Examples

Compare code suggestions from multiple coding assistants on the same task to pick the best result
Route subtasks to different specialist agents (e.g., refactor vs. test generation) and aggregate outputs
Log and trace agent interactions to build a basic agent track record for later evaluation
Prototype multi-agent developer workflows before investing in production monitoring