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<span id="id1"></span><h1>Intro to Arch<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#intro-to-arch"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h1>
<p>Arch is an intelligent <a class="reference external" href="https://www.cloudflare.com/learning/ddos/what-is-layer-7/" rel="nofollow noopener">(Layer 7)<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a> gateway
designed for generative AI apps, AI agents, and Co-pilots that work with prompts. Engineered with purpose-built
large language models (LLMs), Arch handles all the critical but undifferentiated tasks related to the handling and
processing of prompts, including detecting and rejecting <a class="reference external" href="https://github.com/verazuo/jailbreak_llms" rel="nofollow noopener">jailbreak<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>
attempts, intelligently calling “backend” APIs to fulfill the users request represented in a prompt, routing to
and offering disaster recovery between upstream LLMs, and managing the observability of prompts and LLM interactions
in a centralized way.</p>
<a class="reference internal image-reference" href="../_images/arch-logo.png"><img alt="../_images/arch-logo.png" class="align-center" src="../_images/arch-logo.png" style="width: 100%;"/>
</a>
<p><strong>The project was born out of the belief that:</strong></p>
<blockquote>
<div><p><em>Prompts are nuanced and opaque user requests, which require the same capabilities as traditional HTTP requests
including secure handling, intelligent routing, robust observability, and integration with backend (API)
systems for personalization - all outside business logic.</em></p>
</div></blockquote>
<p>In practice, achieving the above goal is incredibly difficult. Arch attempts to do so by providing the
following high level features:</p>
<hr class="docutils"/>
<p><strong>Out-of-process architecture, built on</strong> <a class="reference external" href="http://envoyproxy.io/" rel="nofollow noopener">Envoy<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>: Arch is takes a dependency on
Envoy and is a self-contained process that is designed to run alongside your application servers. Arch uses
Envoys HTTP connection management subsystem, HTTP L7 filtering and telemetry capabilities to extend the
functionality exclusively for prompts and LLMs. This gives Arch several advantages:</p>
<ul class="simple">
<li><p>Arch builds on Envoys proven success. Envoy is used at masssive sacle by the leading technology companies of
our time including <a class="reference external" href="https://www.airbnb.com" rel="nofollow noopener">AirBnB<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>, <a class="reference external" href="https://www.dropbox.com" rel="nofollow noopener">Dropbox<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>,
<a class="reference external" href="https://www.google.com" rel="nofollow noopener">Google<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>, <a class="reference external" href="https://www.reddit.com" rel="nofollow noopener">Reddit<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>, <a class="reference external" href="https://www.stripe.com" rel="nofollow noopener">Stripe<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>,
etc. Its battle tested and scales linearly with usage and enables developers to focus on what really matters:
application features and business logic.</p></li>
<li><p>Arch works with any application language. A single Arch deployment can act as gateway for AI applications
written in Python, Java, C++, Go, Php, etc.</p></li>
<li><p>Arch can be deployed and upgraded quickly across your infrastructure transparently without the horrid pain
of deploying library upgrades in your applications.</p></li>
</ul>
<p><strong>Engineered with Fast LLMs:</strong> Arch is engineered with specialized (sub-billion) LLMs that are desgined for
fast, cost-effective and acurrate handling of prompts. These LLMs are designed to be
best-in-class for critcal prompt-related tasks like:</p>
<ul class="simple">
<li><p><strong>Function/API Calling:</strong> Arch helps you easily personalize your applications by enabling calls to
application-specific (API) operations via user prompts. This involves any predefined functions or APIs
you want to expose to users to perform tasks, gather information, or manipulate data. With function calling,
you have flexibility to support “agentic” experiences tailored to specific use cases - from updating insurance
claims to creating ad campaigns - via prompts. Arch analyzes prompts, extracts critical information from
prompts, engages in lightweight conversation to gather any missing parameters and makes API calls so that you can
focus on writing business logic. For more details, read <a class="reference internal" href="../concepts/tech_overview/prompt.html#arch-overview-prompt-handling"><span class="std std-ref">prompt processing</span></a>.</p></li>
<li><p><strong>Prompt Guardrails:</strong> Arch helps you improve the safety of your application by applying prompt guardrails in
a centralized way for better governance hygiene. With prompt guardrails you can prevent <a class="reference external" href="https://github.com/verazuo/jailbreak_llms" rel="nofollow noopener">jailbreak<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>
attempts or toxicity present in users prompts without having to write a single line of code. To learn more
about how to configure guardrails available in Arch, read <a class="reference internal" href="../concepts/tech_overview/prompt.html#arch-overview-prompt-handling"><span class="std std-ref">prompt processing</span></a>.</p></li>
<li><p><strong>[Coming Soon] Intent-Markers:</strong> Developers struggle to handle <a class="reference external" href="https://www.reddit.com/r/ChatGPTPromptGenius/comments/17dzmpy/how_to_use_rag_with_conversation_history_for/?" rel="nofollow noopener">follow-up<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>,
or <a class="reference external" href="https://www.reddit.com/r/LocalLLaMA/comments/18mqwg6/best_practice_for_rag_with_followup_chat/" rel="nofollow noopener">clarifying<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>
questions. Specifically, when users ask for modifications or additions to previous responses their AI applications
often generate entirely new responses instead of adjusting the previous ones. Arch offers intent-markers as a
feature so that developers know when the user has shifted away from the previous intent so that they can improve
their retrieval, lower overall token cost and dramatically improve the speed and accuracy of their responses back
to users. For more details <a class="reference internal" href="../build_with_arch/rag.html#arch-rag-guide"><span class="std std-ref">intent markers</span></a></p></li>
</ul>
<p><strong>Traffic Management:</strong> Arch offers several capabilities for LLM calls originating from your applications, including smart
retries on errors from upstream LLMs, and automatic cutover to other LLMs configured in Arch for continuous availability
and disaster recovery scenarios. Arch extends Envoys <a class="reference external" href="https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/upstream/cluster_manager" rel="nofollow noopener">cluster subsystem<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>
to manage upstream connections to LLMs so that you can build resilient AI applications.</p>
<p><strong>Front/edge Gateway:</strong> There is substantial benefit in using the same software at the edge (observability,
traffic shaping alogirithms, applying guardrails, etc.) as for outbound LLM inference use cases. Arch has the feature set
that makes it exceptionally well suited as an edge gateway for AI applications. This includes TLS termination, applying
guardrail early in the pricess, intelligent parameter gathering from prompts, and prompt-based routing to backend APIs.</p>
<p><strong>Best-In Class Monitoring:</strong> Arch offers several monitoring metrics that help you understand three critical aspects of
your application: latency, token usage, and error rates by an upstream LLM provider. Latency measures the speed at which
your application is responding to users, which includes metrics like time to first token (TFT), time per output token (TOT)
metrics, and the total latency as perceived by users.</p>
<p><strong>End-to-End Tracing:</strong> Arch propagates trace context using the W3C Trace Context standard, specifically through the
<code class="docutils literal notranslate"><span class="pre">traceparent</span></code> header. This allows each component in the system to record its part of the request flow, enabling <strong>end-to-end tracing</strong>
across the entire application. By using OpenTelemetry, Arch ensures that developers can capture this trace data consistently and
in a format compatible with various observability tools. For more details, read <a class="reference internal" href="../guides/observability/tracing.html#arch-overview-tracing"><span class="std std-ref">tracing</span></a>.</p>
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<h1>Overview<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#overview"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h1>
<p>Welcome to Arch, the intelligent prompt gateway designed to help developers build <strong>fast</strong>, <strong>secure</strong>, and <strong>personalized</strong> generative AI apps at ANY scale.
In this documentation, you will learn how to quickly set up Arch to trigger API calls via prompts, apply prompt guardrails without writing any application-level logic,
simplify the interaction with upstream LLMs, and improve observability all while simplifying your application development process.</p>
<section id="get-started">
<h2>Get Started<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#get-started" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#get-started'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>This section introduces you to Arch and helps you get set up quickly:</p>
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Overview</div>
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Intro to Arch</div>
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Quickstart</div>
<p class="sd-card-text">Learn how to quickly set up and integrate</p>
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<section id="concepts">
<h2>Concepts<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#concepts" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#concepts'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>Deep dive into essential ideas and mechanisms behind Arch:</p>
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Tech Overview</div>
<p class="sd-card-text">Learn about the technology stack</p>
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LLM Provider</div>
<p class="sd-card-text">Explore Archs LLM integration options</p>
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Targets</div>
<p class="sd-card-text">Understand how Arch handles prompts</p>
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<h2>Guides<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#guides" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#guides'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>Step-by-step tutorials for practical Arch use cases and scenarios:</p>
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Prompt Guard</div>
<p class="sd-card-text">Instructions on securing and validating prompts</p>
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<a class="sd-stretched-link sd-hide-link-text reference external" href="../guides/tech_overview/tech_overview.html"><span>../guides/tech_overview/tech_overview.html</span></a></div>
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Function Calling</div>
<p class="sd-card-text">A guide to effective function calling</p>
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<a class="sd-stretched-link sd-hide-link-text reference external" href="../guides/function_calling.html"><span>../guides/function_calling.html</span></a></div>
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Observability</div>
<p class="sd-card-text">Learn to monitor and troubleshoot Arch</p>
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<section id="build-with-arch">
<h2>Build with Arch<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#build-with-arch" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#build-with-arch'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>For developers extending and customizing Arch for specialized needs:</p>
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Agentic Workflow</div>
<p class="sd-card-text">Discover how to create and manage custom agents within Arch</p>
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RAG Application</div>
<p class="sd-card-text">Integrate RAG for knowledge-driven responses</p>
</div>
<a class="sd-stretched-link sd-hide-link-text reference external" href="../build_with_arch/rag.html"><span>../build_with_arch/rag.html</span></a></div>
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<span id="id1"></span><h1>Quickstart<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#quickstart"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h1>
<p>Follow this guide to learn how to quickly set up Arch and integrate it into your generative AI applications.</p>
<section id="prerequisites">
<h2>Prerequisites<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#prerequisites" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#prerequisites'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>Before you begin, ensure you have the following:</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">Docker</span></code> &amp; <code class="docutils literal notranslate"><span class="pre">Python</span></code> installed on your system</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">API</span> <span class="pre">Keys</span></code> for LLM providers (if using external LLMs)</p></li>
</ul>
<p>The fastest way to get started using Arch is to use <a class="reference external" href="https://hub.docker.com/r/katanemo/arch" rel="nofollow noopener">katanemo/arch<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a> pre-built binaries.
You can also build it from source.</p>
</section>
<section id="step-1-install-arch">
<h2>Step 1: Install Arch<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#step-1-install-arch" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#step-1-install-arch'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>Archs CLI allows you to manage and interact with the Arch gateway efficiently. To install the CLI, simply
run the following command:</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><code><span id="line-1"><span class="gp">$ </span>pip<span class="w"> </span>install<span class="w"> </span>archgw
</span></code></pre></div>
</div>
<p>This will install the archgw command-line tool globally on your system.</p>
<div class="admonition tip">
<p class="admonition-title">Tip</p>
<p>We recommend that developers create a new Python virtual environment to isolate dependencies before installing Arch.
This ensures that <cite>archgw</cite> and its dependencies do not interfere with other packages on your system.</p>
<p>To create and activate a virtual environment, you can run the following commands:</p>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><code><span id="line-1"><span class="gp">$ </span>python<span class="w"> </span>-m<span class="w"> </span>venv<span class="w"> </span>venv
</span><span id="line-2"><span class="gp">$ </span><span class="nb">source</span><span class="w"> </span>venv/bin/activate<span class="w"> </span><span class="c1"># On Windows, use: venv\Scripts\activate</span>
</span><span id="line-3"><span class="gp">$ </span>pip<span class="w"> </span>install<span class="w"> </span>archgw
</span></code></pre></div>
</div>
</div>
</section>
<section id="step-2-config-arch">
<h2>Step 2: Config Arch<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#step-2-config-arch" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#step-2-config-arch'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>Arch operates based on a configuration file where you can define LLM providers, prompt targets, and guardrails, etc.
Below is an example configuration to get you started, including:</p>
<ul class="simple">
<li><p><code class="docutils literal notranslate"><span class="pre">endpoints</span></code>: Specifies where Arch listens for incoming prompts.</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">system_prompts</span></code>: Defines predefined prompts to set the context for interactions.</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">llm_providers</span></code>: Lists the LLM providers Arch can route prompts to.</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">prompt_guards</span></code>: Sets up rules to detect and reject undesirable prompts.</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">prompt_targets</span></code>: Defines endpoints that handle specific types of prompts.</p></li>
<li><p><code class="docutils literal notranslate"><span class="pre">error_target</span></code>: Specifies where to route errors for handling.</p></li>
</ul>
<div class="highlight-yaml notranslate"><div class="highlight"><pre><span></span><code><span id="line-1"><span class="nt">version</span><span class="p">:</span><span class="w"> </span><span class="s">"0.1-beta"</span>
</span><span id="line-2"><span class="nt">listen</span><span class="p">:</span>
</span><span id="line-3"><span class="w"> </span><span class="nt">address</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">127.0.0.1 | 0.0.0.0</span>
</span><span id="line-4"><span class="w"> </span><span class="nt">port_value</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">8080</span><span class="w"> </span><span class="c1">#If you configure port 443, you'll need to update the listener with tls_certificates</span>
</span><span id="line-5">
</span><span id="line-6"><span class="nt">system_prompt</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">|</span>
</span><span id="line-7"><span class="w"> </span><span class="no">You are a network assistant that just offers facts; not advice on manufacturers or purchasing decisions.</span>
</span><span id="line-8">
</span><span id="line-9"><span class="nt">llm_providers</span><span class="p">:</span>
</span><span id="line-10"><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="s">"OpenAI"</span>
</span><span id="line-11"><span class="w"> </span><span class="nt">provider</span><span class="p">:</span><span class="w"> </span><span class="s">"openai"</span>
</span><span id="line-12"><span class="w"> </span><span class="nt">access_key</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">OPENAI_API_KEY</span>
</span><span id="line-13"><span class="w"> </span><span class="nt">model</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">gpt-4o</span>
</span><span id="line-14"><span class="w"> </span><span class="nt">stream</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">true</span>
</span><span id="line-15">
</span><span id="line-16"><span class="nt">prompt_targets</span><span class="p">:</span>
</span><span id="line-17"><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">reboot_devices</span>
</span><span id="line-18"><span class="w"> </span><span class="nt">description</span><span class="p">:</span><span class="w"> </span><span class="p p-Indicator">&gt;</span>
</span><span id="line-19"><span class="w"> </span><span class="no">This prompt target handles user requests to reboot devices.</span>
</span><span id="line-20"><span class="w"> </span><span class="no">It ensures that when users request to reboot specific devices or device groups, the system processes the reboot commands accurately.</span>
</span><span id="line-21">
</span><span id="line-22"><span class="w"> </span><span class="no">**Examples of user prompts:**</span>
</span><span id="line-23">
</span><span id="line-24"><span class="w"> </span><span class="no">- "Please reboot device 12345."</span>
</span><span id="line-25"><span class="w"> </span><span class="no">- "Restart all devices in tenant group tenant-XYZ</span>
</span><span id="line-26"><span class="w"> </span><span class="no">- "I need to reboot devices A, B, and C."</span>
</span><span id="line-27">
</span><span id="line-28"><span class="w"> </span><span class="nt">path</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">/agent/device_reboot</span>
</span><span id="line-29"><span class="w"> </span><span class="nt">parameters</span><span class="p">:</span>
</span><span id="line-30"><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="s">"device_ids"</span>
</span><span id="line-31"><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">list</span><span class="w"> </span><span class="c1"># Options: integer | float | list | dictionary | set</span>
</span><span id="line-32"><span class="w"> </span><span class="nt">description</span><span class="p">:</span><span class="w"> </span><span class="s">"A</span><span class="nv"> </span><span class="s">list</span><span class="nv"> </span><span class="s">of</span><span class="nv"> </span><span class="s">device</span><span class="nv"> </span><span class="s">identifiers</span><span class="nv"> </span><span class="s">(IDs)</span><span class="nv"> </span><span class="s">to</span><span class="nv"> </span><span class="s">reboot."</span>
</span><span id="line-33"><span class="w"> </span><span class="nt">required</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">false</span>
</span><span id="line-34"><span class="w"> </span><span class="p p-Indicator">-</span><span class="w"> </span><span class="nt">name</span><span class="p">:</span><span class="w"> </span><span class="s">"device_group"</span>
</span><span id="line-35"><span class="w"> </span><span class="nt">type</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">string</span><span class="w"> </span><span class="c1"># Options: string | integer | float | list | dictionary | set</span>
</span><span id="line-36"><span class="w"> </span><span class="nt">description</span><span class="p">:</span><span class="w"> </span><span class="s">"The</span><span class="nv"> </span><span class="s">name</span><span class="nv"> </span><span class="s">of</span><span class="nv"> </span><span class="s">the</span><span class="nv"> </span><span class="s">device</span><span class="nv"> </span><span class="s">group</span><span class="nv"> </span><span class="s">to</span><span class="nv"> </span><span class="s">reboot."</span>
</span><span id="line-37"><span class="w"> </span><span class="nt">required</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">false</span>
</span><span id="line-38">
</span><span id="line-39"><span class="c1"># Arch creates a round-robin load balancing between different endpoints, managed via the cluster subsystem.</span>
</span><span id="line-40"><span class="nt">endpoints</span><span class="p">:</span>
</span><span id="line-41"><span class="w"> </span><span class="nt">app_server</span><span class="p">:</span>
</span><span id="line-42"><span class="w"> </span><span class="c1"># value could be ip address or a hostname with port</span>
</span><span id="line-43"><span class="w"> </span><span class="c1"># this could also be a list of endpoints for load balancing for example endpoint: [ ip1:port, ip2:port ]</span>
</span><span id="line-44"><span class="w"> </span><span class="nt">endpoint</span><span class="p">:</span><span class="w"> </span><span class="s">"127.0.0.1:80"</span>
</span><span id="line-45"><span class="w"> </span><span class="c1"># max time to wait for a connection to be established</span>
</span><span id="line-46"><span class="w"> </span><span class="nt">connect_timeout</span><span class="p">:</span><span class="w"> </span><span class="l l-Scalar l-Scalar-Plain">0.005s</span>
</span><span id="line-47"><span class="w"> </span><span class="nt">version</span><span class="p">:</span><span class="w"> </span><span class="s">"0.1-beta"</span>
</span></code></pre></div>
</div>
</section>
<section id="step-3-start-arch-gateway">
<h2>Step 3: Start Arch Gateway<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#step-3-start-arch-gateway" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#step-3-start-arch-gateway'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><code><span id="line-1"><span class="gp">$ </span>archgw<span class="w"> </span>up<span class="w"> </span><span class="o">[</span>path_to_config<span class="o">]</span>
</span></code></pre></div>
</div>
</section>
<section id="next-steps">
<h2>Next Steps<a @click.prevent="window.navigator.clipboard.writeText($el.href); $el.setAttribute('data-tooltip', 'Copied!'); setTimeout(() =&gt; $el.setAttribute('data-tooltip', 'Copy link to this element'), 2000)" aria-label="Copy link to this element" class="headerlink" data-tooltip="Copy link to this element" href="#next-steps" x-intersect.margin.0%.0%.-70%.0%="activeSection = '#next-steps'"><svg height="1em" viewbox="0 0 24 24" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z"></path></svg></a></h2>
<p>Congratulations! Youve successfully set up Arch and made your first prompt-based request. To further enhance your GenAI applications, explore the following resources:</p>
<ul class="simple">
<li><p>Full Documentation: Comprehensive guides and references.</p></li>
<li><p><a class="reference external" href="https://github.com/katanemo/arch" rel="nofollow noopener">GitHub Repository<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>: Access the source code, contribute, and track updates.</p></li>
<li><p><a class="reference external" href="https://github.com/katanemo/arch#contact" rel="nofollow noopener">Support<svg fill="currentColor" height="1em" stroke="none" viewbox="0 96 960 960" width="1em" xmlns="http://www.w3.org/2000/svg"><path d="M188 868q-11-11-11-28t11-28l436-436H400q-17 0-28.5-11.5T360 336q0-17 11.5-28.5T400 296h320q17 0 28.5 11.5T760 336v320q0 17-11.5 28.5T720 696q-17 0-28.5-11.5T680 656V432L244 868q-11 11-28 11t-28-11Z"></path></svg></a>: Get help and connect with the Arch community .</p></li>
</ul>
<p>With Arch, building scalable, fast, and personalized GenAI applications has never been easier. Dive deeper into Archs capabilities and start creating innovative AI-driven experiences today!</p>
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