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FlashLabs Launches OrcaReplay

FlashLabs Inc., headquartered in Chiyoda, Tokyo, has recently introduced OrcaReplay on September 1, 2026. This innovative open-source tool enables users to record, replay, and switch between different AI agents efficiently, without requiring code alterations. Designed for the Japanese market, OrcaReplay serves as a significant addition to the capabilities of the existing AI inference gateway, OrcaRouter, which consolidates access to various AI models.

What is OrcaReplay?

OrcaReplay empowers users to capture interactions with several prominent AI agents, such as Claude Code, Codex CLI, Grok CLI, and Hermes. Unlike conventional recording tools, OrcaReplay allows for complete reproduction of recorded sessions even without internet connectivity. This unique feature makes it a strong contender in the market, promoting ease of comparison and debuggability among different AI models.

Key Features of OrcaReplay:

• - Non-Intrusive Recording: Users can record actions from AI agents without any modifications needed. The tool only requires two settings for seamless operation.
• - Comprehensive Activity Tracking: Users can observe the outcomes of executed commands, file operations, and external tool uses within a coherent timeline, capturing more than just AI responses.
• - Network-Independent Replay: Recorded tasks can be replayed offline with the exact same content, omitting any fees associated with AI model queries.
• - Comparison of Models: Midway through execution, users can switch to other models for direct comparison while maintaining the same conversation context.

The recordings are saved locally within project folders, ensuring sensitive information such as passwords and API keys are automatically excluded from records. Furthermore, the software is open-source, with the code available under the Apache-2.0 license, allowing any developers to review or extend the tool as desired. Installation is straightforward through the command `npm i -g orcareplay`, requiring Node.js version 20 or higher.

Challenges Addressed by OrcaReplay

As AI coding agents have rapidly gained traction in development environments, understanding what these agents execute remains a complex challenge. Traditional monitoring solutions generally report on costs and processing volumes without providing insights into changes made to files or the success of commands executed. OrcaReplay meets this need by offering granular visibility into the actions performed by AI agents, addressing the frequent variability in outputs due to AI model responses.

Reproducing past executions is essential for debugging and verifying comparative performance across models. OrcaReplay simplifies these tasks, ensuring that developers can trace their steps and understand previous actions taken by AI agents.

How Does It Work?

The functionality of OrcaReplay is underpinned by a simple yet effective mechanism. As AI agents do not retain conversational history, each interaction requires sending the entire dialogue history back to the model. OrcaReplay integrates a small proxy program into the communication channel, capturing interactions including questions posed, responses received, and tools used along the results’ journey.

This recording process is facilitated by different capture layers—not just covering command success rates and processing times but also tracking file changes in the working directory and communications with the AI model used. For agents that do not allow API destination configuration, users can leverage the optional `--tls-intercept` feature to ensure those interactions are also captured securely.

By utilizing `orca replay`, users can reproduce recorded sessions entirely offline, allowing for unlimited retakes without incurring any costs. Importantly, it retains the ability to compare models effectively, further facilitating model validation processes.

Looking Ahead

Currently at version 0, OrcaReplay intends to evolve with community contributions, expanding its supported agents and refining the execution recording framework. FlashLabs is committed to enhancing productivity in AI agent development through its comprehensive tool offerings.

About OrcaRouter

Created by Continuum AI and offered exclusively by FlashLabs in Japan, OrcaRouter serves as an AI inference gateway. It connects to over 200 generative AI models, including industry leaders like OpenAI, with updated models regularly added to its catalog, ensuring users have access to the latest technologies without hassle.

Company Overview

FlashLabs Inc.

• - Headquarters: 10-8 Ichibancho, Chiyoda, Tokyo
• - CEO: Yoichi Hosoi
• - Established: July 2023
• - Business Focus: AI application research, automation of sales and customer experience via AI hybrid solutions.
• - Website

Continuum AI

• - Focused on developing foundational infrastructure for intelligent systems for the next decade.
• - Website

For media inquiries, please contact Koiki Kobayashi at FlashLabs Marketing Department: [email protected].