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<h1 id="getting-started-with-headroom">Getting Started with Headroom<a class="headerlink" href="#getting-started-with-headroom" title="Permanent link">&para;</a></h1>
<p>This guide will help you get up and running with Headroom in under 5 minutes.</p>
<h2 id="installation">Installation<a class="headerlink" href="#installation" title="Permanent link">&para;</a></h2>
<p><strong>Python:</strong></p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-0-1"><a id="__codelineno-0-1" name="__codelineno-0-1" href="#__codelineno-0-1"></a><span class="c1"># Core package (minimal dependencies)</span>
</span><span id="__span-0-2"><a id="__codelineno-0-2" name="__codelineno-0-2" href="#__codelineno-0-2"></a>pip<span class="w"> </span>install<span class="w"> </span>headroom
</span><span id="__span-0-3"><a id="__codelineno-0-3" name="__codelineno-0-3" href="#__codelineno-0-3"></a>
</span><span id="__span-0-4"><a id="__codelineno-0-4" name="__codelineno-0-4" href="#__codelineno-0-4"></a><span class="c1"># With proxy server</span>
</span><span id="__span-0-5"><a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a>pip<span class="w"> </span>install<span class="w"> </span>headroom<span class="o">[</span>proxy<span class="o">]</span>
</span><span id="__span-0-6"><a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a>
</span><span id="__span-0-7"><a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a><span class="c1"># With semantic relevance (for smarter compression)</span>
</span><span id="__span-0-8"><a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a>pip<span class="w"> </span>install<span class="w"> </span>headroom<span class="o">[</span>relevance<span class="o">]</span>
</span><span id="__span-0-9"><a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a>
</span><span id="__span-0-10"><a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a><span class="c1"># Everything</span>
</span><span id="__span-0-11"><a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a>pip<span class="w"> </span>install<span class="w"> </span>headroom<span class="o">[</span>all<span class="o">]</span>
</span></code></pre></div>
<p><strong>TypeScript / Node.js:</strong></p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-1-1"><a id="__codelineno-1-1" name="__codelineno-1-1" href="#__codelineno-1-1"></a>npm<span class="w"> </span>install<span class="w"> </span>headroom-ai
</span></code></pre></div>
<p><strong>Docker-native:</strong></p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-2-1"><a id="__codelineno-2-1" name="__codelineno-2-1" href="#__codelineno-2-1"></a>curl<span class="w"> </span>-fsSL<span class="w"> </span>https://raw.githubusercontent.com/chopratejas/headroom/main/scripts/install.sh<span class="w"> </span><span class="p">|</span><span class="w"> </span>bash
</span></code></pre></div>
<p>PowerShell:</p>
<div class="language-powershell highlight"><pre><span></span><code><span id="__span-3-1"><a id="__codelineno-3-1" name="__codelineno-3-1" href="#__codelineno-3-1"></a><span class="nb">irm </span><span class="n">https</span><span class="p">://</span><span class="n">raw</span><span class="p">.</span><span class="n">githubusercontent</span><span class="p">.</span><span class="n">com</span><span class="p">/</span><span class="n">chopratejas</span><span class="p">/</span><span class="n">headroom</span><span class="p">/</span><span class="n">main</span><span class="p">/</span><span class="n">scripts</span><span class="p">/</span><span class="n">install</span><span class="p">.</span><span class="n">ps1</span> <span class="p">|</span> <span class="nb">iex</span>
</span></code></pre></div>
<p>See <a href="../docker-install/">Docker-native install</a> for wrapper behavior, compose usage, and host-integrated <code>wrap</code> flows.</p>
<p>If you want Headroom to stay up in the background and automatically serve supported tools, use <a href="../persistent-installs/">Persistent Installs</a>:</p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-4-1"><a id="__codelineno-4-1" name="__codelineno-4-1" href="#__codelineno-4-1"></a>headroom<span class="w"> </span>install<span class="w"> </span>apply<span class="w"> </span>--preset<span class="w"> </span>persistent-service<span class="w"> </span>--providers<span class="w"> </span>auto
</span></code></pre></div>
<h2 id="quick-start-proxy-mode-recommended">Quick Start: Proxy Mode (Recommended)<a class="headerlink" href="#quick-start-proxy-mode-recommended" title="Permanent link">&para;</a></h2>
<p>The easiest way to use Headroom is as a proxy server:</p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-5-1"><a id="__codelineno-5-1" name="__codelineno-5-1" href="#__codelineno-5-1"></a><span class="c1"># Start the proxy</span>
</span><span id="__span-5-2"><a id="__codelineno-5-2" name="__codelineno-5-2" href="#__codelineno-5-2"></a>headroom<span class="w"> </span>proxy<span class="w"> </span>--port<span class="w"> </span><span class="m">8787</span>
</span></code></pre></div>
<p>Then point your LLM client at it:</p>
<div class="language-bash highlight"><pre><span></span><code><span id="__span-6-1"><a id="__codelineno-6-1" name="__codelineno-6-1" href="#__codelineno-6-1"></a><span class="c1"># Claude Code</span>
</span><span id="__span-6-2"><a id="__codelineno-6-2" name="__codelineno-6-2" href="#__codelineno-6-2"></a><span class="nv">ANTHROPIC_BASE_URL</span><span class="o">=</span>http://localhost:8787<span class="w"> </span>claude
</span><span id="__span-6-3"><a id="__codelineno-6-3" name="__codelineno-6-3" href="#__codelineno-6-3"></a>
</span><span id="__span-6-4"><a id="__codelineno-6-4" name="__codelineno-6-4" href="#__codelineno-6-4"></a><span class="c1"># GitHub Copilot CLI (default Anthropic-style proxy route)</span>
</span><span id="__span-6-5"><a id="__codelineno-6-5" name="__codelineno-6-5" href="#__codelineno-6-5"></a>headroom<span class="w"> </span>wrap<span class="w"> </span>copilot<span class="w"> </span>--<span class="w"> </span>--model<span class="w"> </span>claude-sonnet-4-20250514
</span><span id="__span-6-6"><a id="__codelineno-6-6" name="__codelineno-6-6" href="#__codelineno-6-6"></a>
</span><span id="__span-6-7"><a id="__codelineno-6-7" name="__codelineno-6-7" href="#__codelineno-6-7"></a><span class="c1"># OpenAI-compatible clients</span>
</span><span id="__span-6-8"><a id="__codelineno-6-8" name="__codelineno-6-8" href="#__codelineno-6-8"></a><span class="nv">OPENAI_BASE_URL</span><span class="o">=</span>http://localhost:8787/v1<span class="w"> </span>your-app
</span></code></pre></div>
<p>That's it! All your requests now go through Headroom and get optimized automatically.</p>
<h2 id="quick-start-python-sdk">Quick Start: Python SDK<a class="headerlink" href="#quick-start-python-sdk" title="Permanent link">&para;</a></h2>
<p>If you want programmatic control:</p>
<div class="language-python highlight"><pre><span></span><code><span id="__span-7-1"><a id="__codelineno-7-1" name="__codelineno-7-1" href="#__codelineno-7-1"></a><span class="kn">from</span><span class="w"> </span><span class="nn">headroom</span><span class="w"> </span><span class="kn">import</span> <span class="n">HeadroomClient</span>
</span><span id="__span-7-2"><a id="__codelineno-7-2" name="__codelineno-7-2" href="#__codelineno-7-2"></a><span class="kn">from</span><span class="w"> </span><span class="nn">openai</span><span class="w"> </span><span class="kn">import</span> <span class="n">OpenAI</span>
</span><span id="__span-7-3"><a id="__codelineno-7-3" name="__codelineno-7-3" href="#__codelineno-7-3"></a>
</span><span id="__span-7-4"><a id="__codelineno-7-4" name="__codelineno-7-4" href="#__codelineno-7-4"></a><span class="c1"># Create a wrapped client</span>
</span><span id="__span-7-5"><a id="__codelineno-7-5" name="__codelineno-7-5" href="#__codelineno-7-5"></a><span class="n">client</span> <span class="o">=</span> <span class="n">HeadroomClient</span><span class="p">(</span>
</span><span id="__span-7-6"><a id="__codelineno-7-6" name="__codelineno-7-6" href="#__codelineno-7-6"></a> <span class="n">original_client</span><span class="o">=</span><span class="n">OpenAI</span><span class="p">(),</span>
</span><span id="__span-7-7"><a id="__codelineno-7-7" name="__codelineno-7-7" href="#__codelineno-7-7"></a> <span class="n">default_mode</span><span class="o">=</span><span class="s2">&quot;optimize&quot;</span><span class="p">,</span>
</span><span id="__span-7-8"><a id="__codelineno-7-8" name="__codelineno-7-8" href="#__codelineno-7-8"></a><span class="p">)</span>
</span><span id="__span-7-9"><a id="__codelineno-7-9" name="__codelineno-7-9" href="#__codelineno-7-9"></a>
</span><span id="__span-7-10"><a id="__codelineno-7-10" name="__codelineno-7-10" href="#__codelineno-7-10"></a><span class="c1"># Use exactly like the original</span>
</span><span id="__span-7-11"><a id="__codelineno-7-11" name="__codelineno-7-11" href="#__codelineno-7-11"></a><span class="n">response</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">chat</span><span class="o">.</span><span class="n">completions</span><span class="o">.</span><span class="n">create</span><span class="p">(</span>
</span><span id="__span-7-12"><a id="__codelineno-7-12" name="__codelineno-7-12" href="#__codelineno-7-12"></a> <span class="n">model</span><span class="o">=</span><span class="s2">&quot;gpt-4o&quot;</span><span class="p">,</span>
</span><span id="__span-7-13"><a id="__codelineno-7-13" name="__codelineno-7-13" href="#__codelineno-7-13"></a> <span class="n">messages</span><span class="o">=</span><span class="p">[</span>
</span><span id="__span-7-14"><a id="__codelineno-7-14" name="__codelineno-7-14" href="#__codelineno-7-14"></a> <span class="p">{</span><span class="s2">&quot;role&quot;</span><span class="p">:</span> <span class="s2">&quot;system&quot;</span><span class="p">,</span> <span class="s2">&quot;content&quot;</span><span class="p">:</span> <span class="s2">&quot;You are a helpful assistant.&quot;</span><span class="p">},</span>
</span><span id="__span-7-15"><a id="__codelineno-7-15" name="__codelineno-7-15" href="#__codelineno-7-15"></a> <span class="p">{</span><span class="s2">&quot;role&quot;</span><span class="p">:</span> <span class="s2">&quot;user&quot;</span><span class="p">,</span> <span class="s2">&quot;content&quot;</span><span class="p">:</span> <span class="s2">&quot;Hello!&quot;</span><span class="p">},</span>
</span><span id="__span-7-16"><a id="__codelineno-7-16" name="__codelineno-7-16" href="#__codelineno-7-16"></a> <span class="p">],</span>
</span><span id="__span-7-17"><a id="__codelineno-7-17" name="__codelineno-7-17" href="#__codelineno-7-17"></a><span class="p">)</span>
</span></code></pre></div>
<h2 id="modes">Modes<a class="headerlink" href="#modes" title="Permanent link">&para;</a></h2>
<h3 id="audit-mode">Audit Mode<a class="headerlink" href="#audit-mode" title="Permanent link">&para;</a></h3>
<p>Observe without modifying:</p>
<div class="language-python highlight"><pre><span></span><code><span id="__span-8-1"><a id="__codelineno-8-1" name="__codelineno-8-1" href="#__codelineno-8-1"></a><span class="n">client</span> <span class="o">=</span> <span class="n">HeadroomClient</span><span class="p">(</span>
</span><span id="__span-8-2"><a id="__codelineno-8-2" name="__codelineno-8-2" href="#__codelineno-8-2"></a> <span class="n">original_client</span><span class="o">=</span><span class="n">OpenAI</span><span class="p">(),</span>
</span><span id="__span-8-3"><a id="__codelineno-8-3" name="__codelineno-8-3" href="#__codelineno-8-3"></a> <span class="n">default_mode</span><span class="o">=</span><span class="s2">&quot;audit&quot;</span><span class="p">,</span>
</span><span id="__span-8-4"><a id="__codelineno-8-4" name="__codelineno-8-4" href="#__codelineno-8-4"></a><span class="p">)</span>
</span><span id="__span-8-5"><a id="__codelineno-8-5" name="__codelineno-8-5" href="#__codelineno-8-5"></a><span class="c1"># Logs metrics but doesn&#39;t change requests</span>
</span></code></pre></div>
<h3 id="optimize-mode">Optimize Mode<a class="headerlink" href="#optimize-mode" title="Permanent link">&para;</a></h3>
<p>Apply transforms to reduce tokens:</p>
<div class="language-python highlight"><pre><span></span><code><span id="__span-9-1"><a id="__codelineno-9-1" name="__codelineno-9-1" href="#__codelineno-9-1"></a><span class="n">client</span> <span class="o">=</span> <span class="n">HeadroomClient</span><span class="p">(</span>
</span><span id="__span-9-2"><a id="__codelineno-9-2" name="__codelineno-9-2" href="#__codelineno-9-2"></a> <span class="n">original_client</span><span class="o">=</span><span class="n">OpenAI</span><span class="p">(),</span>
</span><span id="__span-9-3"><a id="__codelineno-9-3" name="__codelineno-9-3" href="#__codelineno-9-3"></a> <span class="n">default_mode</span><span class="o">=</span><span class="s2">&quot;optimize&quot;</span><span class="p">,</span>
</span><span id="__span-9-4"><a id="__codelineno-9-4" name="__codelineno-9-4" href="#__codelineno-9-4"></a><span class="p">)</span>
</span><span id="__span-9-5"><a id="__codelineno-9-5" name="__codelineno-9-5" href="#__codelineno-9-5"></a><span class="c1"># Compresses tool outputs, aligns cache prefixes, etc.</span>
</span></code></pre></div>
<h3 id="simulate-mode">Simulate Mode<a class="headerlink" href="#simulate-mode" title="Permanent link">&para;</a></h3>
<p>Preview what optimizations would do:</p>
<div class="language-python highlight"><pre><span></span><code><span id="__span-10-1"><a id="__codelineno-10-1" name="__codelineno-10-1" href="#__codelineno-10-1"></a><span class="n">plan</span> <span class="o">=</span> <span class="n">client</span><span class="o">.</span><span class="n">chat</span><span class="o">.</span><span class="n">completions</span><span class="o">.</span><span class="n">simulate</span><span class="p">(</span>
</span><span id="__span-10-2"><a id="__codelineno-10-2" name="__codelineno-10-2" href="#__codelineno-10-2"></a> <span class="n">model</span><span class="o">=</span><span class="s2">&quot;gpt-4o&quot;</span><span class="p">,</span>
</span><span id="__span-10-3"><a id="__codelineno-10-3" name="__codelineno-10-3" href="#__codelineno-10-3"></a> <span class="n">messages</span><span class="o">=</span><span class="p">[</span><span class="o">...</span><span class="p">],</span>
</span><span id="__span-10-4"><a id="__codelineno-10-4" name="__codelineno-10-4" href="#__codelineno-10-4"></a><span class="p">)</span>
</span><span id="__span-10-5"><a id="__codelineno-10-5" name="__codelineno-10-5" href="#__codelineno-10-5"></a><span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;Would save </span><span class="si">{</span><span class="n">plan</span><span class="o">.</span><span class="n">tokens_saved</span><span class="si">}</span><span class="s2"> tokens&quot;</span><span class="p">)</span>
</span><span id="__span-10-6"><a id="__codelineno-10-6" name="__codelineno-10-6" href="#__codelineno-10-6"></a><span class="nb">print</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;Transforms: </span><span class="si">{</span><span class="n">plan</span><span class="o">.</span><span class="n">transforms_applied</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
</span></code></pre></div>
<h2 id="next-steps">Next Steps<a class="headerlink" href="#next-steps" title="Permanent link">&para;</a></h2>
<ul>
<li><a href="../proxy/">Proxy Server Documentation</a> - Configure the proxy</li>
<li><a href="../transforms/">Transforms Reference</a> - Understand each transform</li>
<li><a href="../api/">API Reference</a> - Full API documentation</li>
</ul>
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