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Description

Muse Code is a beta terminal coding agent from Meta designed to help developers complete complex software engineering work across large codebases. Powered by Muse Spark 1.2, the agent can plan repository changes, write code, run validation steps, and coordinate persistent subagents for difficult development tasks. Muse Code uses a simple main agent loop supported by async background agents that remain active throughout each session. These background agents can gather information, carry out next steps, and decide when to report back to the main agent, reducing latency and unnecessary user steering. The runtime is built around a local event log where every model call, tool run, approval, and edit is appended. This event log makes Muse Code replay-exact and restart-safe, allowing it to resume from the point of failure after a crash. Muse Code also ships with default skills, including /plan, /grill, and /goal, to support structured planning, plan validation, and objective completion. It can be installed on macOS or Linux and is integrated with Meta’s AI developer ecosystem. By combining terminal-based coding, persistent subagents, replay-safe execution, bundled skills, and Muse Spark 1.2, Muse Code helps developers automate larger and longer software engineering workflows.

Description

Reasonix functions as an open-source coding agent tailored for extended autonomous sessions, ensuring that the code produced is readable, auditable, and reversible. It utilizes a single local engine that integrates with four different interfaces: terminal, desktop application, web browser, and ACP-compatible editors, sharing sessions, permissions, skills, and MCP servers among them. The plan mode retains all writes until the suggested steps undergo review and approval, while read, write, and shell commands are distinctly gated and limited within a secure workspace sandbox. Each action taken generates a checkpoint outside of Git, enabling users to revert to earlier points in a lengthy session without disrupting the commit history. Support for MCP through stdio, SSE, and streamable HTTP amalgamates external tools within a single registry, while Markdown skills and independent subagents enhance the agent's capabilities without necessitating a fork. Reasonix maintains a map of the codebase established at the outset, preserving that map for the entirety of the session, which allows users to organize tasks, examine differences, and continue their work seamlessly without sacrificing context. This design fosters an efficient workflow that minimizes the risk of losing track of ongoing projects.

API Access

Has API

API Access

Has API

Screenshots View All

Screenshots View All

Integrations

DeepSeek
DeepSeek-V4-Flash
DeepSeek-V4-Pro
Meta AI
Model Context Protocol (MCP)
Muse Glimmer
Muse Spark
Muse Spark 1.1
Muse Spark 1.2

Integrations

DeepSeek
DeepSeek-V4-Flash
DeepSeek-V4-Pro
Meta AI
Model Context Protocol (MCP)
Muse Glimmer
Muse Spark
Muse Spark 1.1
Muse Spark 1.2

Pricing Details

$1.25 per 1M tokens (input)
Standard pricing: $1.25 per million input tokens and $4.25 per million output tokens

Discounted "contributor" tier costing $0.10 per million input tokens and $0.20 per million output tokens for users who agree to share feedback to improve the AI.
Free Trial
Free Version

Pricing Details

Free
Free Trial
Free Version

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Deployment

Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Customer Support

Business Hours
Live Rep (24/7)
Online Support

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Types of Training

Training Docs
Webinars
Live Training (Online)
In Person

Vendor Details

Company Name

Meta

Founded

2004

Country

United States

Website

meta.ai

Vendor Details

Company Name

Reasonix

Country

China

Website

reasonix.io

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