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Jcode

High performance coding agent harness written in rust

Install

$git clone https://github.com/1jehuang/jcode

Install command taken from the project's README or registry entry. Always review code before running it.

jcode

High-performance coding agents. Run more agents with less RAM for your multi-agent development workflow.

Website · Docs · SDK · Benchmarks · Screenshots · Install · Contributing

Screenshots

Browse the interactive gallery on jcode.sh.

Installation

# macOS & Linux
curl -fsSL https://jcode.sh/install | bash

Windows installation instructions.

Performance & Resource Efficiency

jcode is built to be as performant and resource efficient as possible. Every metric is optimized to the bone, which is important for scaling multi-session workflows. Here we sample a few metrics to show the difference: RAM usage and boot up.

RAM comparison

    <thead>
      <tr>
        <th>Tool</th>
        <th>PSS</th>
        <th>Comparison</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td><strong>jcode (local embedding off)</strong></td>
        <td align="right"><strong>27.8 MB</strong></td>
        <td align="right">baseline</td>
      </tr>
      <tr>
        <td><strong>jcode</strong></td>
        <td align="right"><strong>167.1 MB</strong></td>
        <td align="right"><strong>6.0× more RAM</strong></td>
      </tr>
      <tr>
        <td><strong>pi</strong></td>
        <td align="right"><strong>144.4 MB</strong></td>
        <td align="right"><strong>5.2× more RAM</strong></td>
      </tr>
      <tr>
        <td><strong>Codex CLI</strong></td>
        <td align="right"><strong>140.0 MB</strong></td>
        <td align="right"><strong>5.0× more RAM</strong></td>
      </tr>
      <tr>
        <td><strong>OpenCode</strong></td>
        <td align="right"><strong>371.5 MB</strong></td>
        <td align="right"><strong>13.4× more RAM</strong></td>
      </tr>
      <tr>
        <td><strong>GitHub Copilot CLI</strong></td>
        <td align="right"><strong>333.3 MB</strong></td>
        <td align="right"><strong>12.0× more RAM</strong></td>
      </tr>
      <tr>
        <td><strong>Cursor Agent</strong></td>
        <td align="right"><strong>214.9 MB</strong></td>
        <td align="right"><strong>7.7× more RAM</strong></td>
      </tr>
      <tr>
        <td><strong>Claude Code</strong></td>
        <td align="right"><strong>386.6 MB</strong></td>
        <td align="right"><strong>13.9× more RAM</strong></td>
      </tr>
      <tr>
        <td><strong>Antigravity CLI</strong></td>
        <td align="right"><strong>243.7 MB</strong></td>
        <td align="right"><strong>8.8× more RAM</strong></td>
      </tr>
    </tbody>
  
</td>
<td width="24"></td>
<td valign="top" align="center" width="50%">
  <strong>10 active sessions</strong>
  
    <thead>
      <tr>
        <th>Tool</th>
        <th>PSS</th>
        <

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