microsite-concept/index.html at main · sourcegraph/microsite-concept · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Context for AI Agents | Why Retrieval Prevents Failure</title>
  <meta name="description" content="A microsite about getting the right context into agents, workflows, and automation tools so they stop failing, with Sourcegraph MCP as one concrete implementation.">
  <link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cdefs%3E%3ClinearGradient id='g' x1='0%25' y1='0%25' x2='100%25' y2='100%25'%3E%3Cstop offset='0%25' stop-color='%23ffe0a3'/%3E%3Cstop offset='100%25' stop-color='%2369d9d0'/%3E%3C/linearGradient%3E%3C/defs%3E%3Crect width='64' height='64' rx='18' fill='%23040506'/%3E%3Ccircle cx='32' cy='32' r='16' fill='url(%23g)'/%3E%3Ccircle cx='27' cy='26' r='5' fill='white' fill-opacity='.9'/%3E%3C/svg%3E">
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</head>
<body class="landing-page">
  <div class="page-progress" aria-hidden="true"></div>

  <div class="site-utility">
    <nav class="utility-group" aria-label="Primary">
      <a class="utility-link utility-link-brand" href="#top" aria-current="page">
        <span class="brand-text">Codebase Context</span>
      </a>
      <a class="utility-link" href="./context-problem.html">Software Factory</a>
      <a class="utility-link" href="./mcp-guide.html">Sourcegraph MCP</a>
    </nav>
  </div>

  <aside class="chapter-rail is-gated-hidden" aria-label="Page chapters" data-chapter-gate="context-problem">
    <span class="chapter-kicker">Chapters</span>
    <a class="chapter-link is-active" href="#context-problem" data-chapter-target="context-problem" aria-current="location">
      <span class="chapter-dot" aria-hidden="true"></span>
      <span class="chapter-copy">
        <span class="chapter-index">01</span>
        <span class="chapter-title">Context Problem</span>
      </span>
    </a>
    <a class="chapter-link" href="#agent-loop" data-chapter-target="agent-loop">
      <span class="chapter-dot" aria-hidden="true"></span>
      <span class="chapter-copy">
        <span class="chapter-index">02</span>
        <span class="chapter-title">Agent Loop</span>
      </span>
    </a>
    <a class="chapter-link" href="#how-mcp-works" data-chapter-target="how-mcp-works">
      <span class="chapter-dot" aria-hidden="true"></span>
      <span class="chapter-copy">
        <span class="chapter-index">03</span>
        <span class="chapter-title">How MCP Works</span>
      </span>
    </a>
    <a class="chapter-link" href="#use-cases" data-chapter-target="use-cases">
      <span class="chapter-dot" aria-hidden="true"></span>
      <span class="chapter-copy">
        <span class="chapter-index">04</span>
        <span class="chapter-title">Use Cases</span>
      </span>
    </a>
  </aside>

  <main id="top">
    <section class="hero" aria-labelledby="heroTitle">
      <div class="hero-stage" id="heroScene" aria-hidden="true">
        <div class="scene-backdrop"></div>
        <div class="scan-halo"></div>
      </div>

      <div class="container hero-layout">
        <div class="hero-copy reveal">
          <span class="f-kicker">Context for Agents, Workflows, and Automation</span>
          <p class="hero-statement" id="heroTitle">
            <span>Narrow context creates fast, confident, <span class="text-wrong">wrong</span> answers.</span>
          </p>
          <p class="hero-support">
            Agents, workflows, and automation tools break for the same reason: they act from a partial view. Give them the right context, and the failure rate drops fast.
          </p>
          <p class="hero-credit">Ajay Sridhar and Stephanie Jarmak.</p>
        </div>

        <div class="hero-demo" aria-hidden="true">
          <div class="hero-sourcegraph-grid"></div>
          <div class="hero-sourcegraph-orbit hero-sourcegraph-orbit-a"></div>
          <div class="hero-sourcegraph-orbit hero-sourcegraph-orbit-b"></div>
          <div class="hero-sourcegraph-orbit hero-sourcegraph-orbit-c"></div>
          <div class="hero-sourcegraph-copy">
            <img class="hero-sourcegraph-logo" src="./assets/sourcegraph.svg" alt="Sourcegraph">
          </div>
        </div>

        <div class="hero-scroll-action">
          <a class="scroll-cue" id="heroCta" href="#context-problem">
            <span class="scroll-cue-text">See failure pattern</span>
            <span class="scroll-cue-icon" aria-hidden="true">
              <svg width="22" height="22" viewBox="0 0 22 22" fill="none">
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              </svg>
            </span>
          </a>
        </div>
      </div>
    </section>

    <section class="section problem-section" id="context-problem">
      <div class="container">
        <div class="section-heading reveal">
          <span class="f-kicker">The Context Problem</span>
          <h2 class="section-title section-title-small">Same prompt. Two agents.</h2>
          <p class="section-copy">Pick a use case and see the difference.</p>
        </div>

        <div class="question-bar reveal">
          <button class="question-pill is-active" type="button" data-question-index="0">
            <span class="question-pill-title">Understand Existing Code</span>
            <span class="question-pill-meta">microsoft/vscode · behavioral search</span>
          </button>
          <button class="question-pill" type="button" data-question-index="1">
            <span class="question-pill-title">Consistency and Quality</span>
            <span class="question-pill-meta">apache/flink · deprecation audit</span>
          </button>
          <button class="question-pill" type="button" data-question-index="2">
            <span class="question-pill-title">Investigate an Incident</span>
            <span class="question-pill-meta">grafana/grafana · trace migration bug</span>
          </button>
          <button class="question-pill" type="button" data-question-index="3">
            <span class="question-pill-title">Security Audit</span>
            <span class="question-pill-meta">apache/kafka · ACL authorization</span>
          </button>
        </div>

        <div class="contrast-stage reveal" id="problemDemo">
          <div class="problem-prompt">
            <div class="console-query problem-prompt-query">
              <span class="prompt prompt-shared" aria-hidden="true">❯</span>
              <span id="problemQuery">A function in microsoft/vscode implements a three-way merge algorithm for Settings Sync that reconciles local, remote, and base versions, producing four sets: added, removed, updated, and conflicts. Identify the function and the file it lives in.</span>
            </div>
          </div>

          <div class="problem-compare-grid">
            <article class="contrast-column">
              <p class="contrast-label">AI without context</p>

              <div class="console-view">
                <div class="console-response">
                  <p id="withoutResponse"></p>
                </div>
                <div class="confidence">
                  <div class="confidence-meta">
                    <span>confidence meter</span>
                    <strong id="withoutConfidence">0%</strong>
                  </div>
                  <div class="confidence-bar">
                    <div class="confidence-fill blind" id="withoutConfidenceFill"></div>
                  </div>
                </div>
              </div>
            </article>

            <div class="contrast-divider" aria-hidden="true">
              <span>Context arrives</span>
            </div>

            <article class="contrast-column contrast-column-lit">
              <p class="contrast-label">AI with retrieved context from Sourcegraph</p>

              <div class="console-view console-view-lit">
                <div class="console-response">
                  <div class="log-stream" id="contextLogs"></div>
                  <p id="withResponse"></p>
                </div>
                <div class="confidence">
                  <div class="confidence-meta">
                    <span>confidence meter</span>
                    <strong id="withConfidence">0%</strong>
                  </div>
                  <div class="confidence-bar">
                    <div class="confidence-fill lit" id="withConfidenceFill"></div>
                  </div>
                </div>
              </div>
            </article>
          </div>
        </div>

      </div>
    </section>

    <div class="section-anchor" id="inside-outside-loop" aria-hidden="true"></div>

    <section class="section loop-section" id="agent-loop">
      <div class="container">
        <div class="loop-layout">
          <div class="loop-visual reveal">
            <span class="f-kicker loop-eyebrow">Agent Loop</span>
            <article class="loop-shell" id="loopShell">
              <canvas class="loop-canvas" id="loopCanvas" aria-hidden="true"></canvas>

              <div class="loop-core">
                <p class="loop-stage-title" id="loopStageTitle">Plan</p>
                <p class="loop-stage-description" id="loopStageDescription">The agent interprets the task and identifies what context is missing.</p>
              </div>

              <button class="loop-point active" type="button" data-angle="-90" data-title="Plan" data-description="The agent interprets the task and identifies what context is missing before it starts editing or answering.">
                <strong>Plan</strong>
              </button>
              <button class="loop-point" type="button" data-angle="0" data-title="Discover" data-description="The agent finds and pulls the evidence it needs from files, local history, and tools.">
                <strong>Discover</strong>
              </button>
              <button class="loop-point" type="button" data-angle="90" data-title="Reason" data-description="The agent synthesizes that context, decides what to do, and checks for constraints or risks.">
                <strong>Reason</strong>
              </button>
              <button class="loop-point" type="button" data-angle="180" data-title="Act" data-description="The agent produces the output: an answer, code change, workflow step, or automation action grounded in the context it found.">
                <strong>Act</strong>
              </button>
            </article>
          </div>

          <div class="section-heading reveal">
            <h2 class="section-title section-title-small statement-title">How Agents Gather Context</h2>
            <p class="section-copy">
              This is not a linear sequence. An agent may plan, retrieve, synthesize, and then return to retrieval several times before acting. The quality of each cycle depends on the context surface available — and retrieval is where most agents fall short.
            </p>
          </div>
        </div>
      </div>
    </section>

    <section class="section loop-mcp-section" id="loop-with-mcp">
      <div class="container">
        <div class="loop-layout loop-layout-mcp">
          <div class="section-heading reveal">
            <h2 class="section-title section-title-small statement-title">The agentic loop with Sourcegraph</h2>
            <p class="section-copy">
              Agents retrieve the correct context before reasoning begins: exact files, definitions, references, and history on demand, so the agent acts on full context, not just a partial picture.
            </p>
          </div>

          <div class="loop-visual reveal">
            <div class="loop-compare">
              <div class="loop-compare-col loop-compare-col-lit">
                <div class="loop-flow">
                  <div class="loop-flow-node">Plan</div>
                  <div class="loop-flow-connector loop-flow-connector-lit" aria-hidden="true"></div>
                  <div class="loop-flow-node">Discover</div>
                  <div class="loop-flow-connector loop-flow-connector-lit" aria-hidden="true"></div>
                  <div class="loop-flow-node loop-flow-node-retrieve">Retrieve</div>
                  <div class="loop-flow-connector loop-flow-connector-lit" aria-hidden="true"></div>
                  <div class="loop-flow-node">Reason</div>
                  <div class="loop-flow-connector loop-flow-connector-lit" aria-hidden="true"></div>
                  <div class="loop-flow-node">Act</div>
                </div>
              </div>
            </div>
          </div>
        </div>

      </div>
    </section>

    <section class="section protocol-section" id="how-mcp-works">
      <div class="container">
        <div class="section-heading reveal">
          <span class="f-kicker">How MCP Works</span>
          <h2 class="section-title statement-title">An open protocol for pulling context on demand.</h2>
          <p class="section-copy">
            Model Context Protocol (MCP) gives agents a standard way to retrieve information beyond their context window - search indexes, code intelligence, history and etc — on demand.
          </p>
        </div>

        <div class="protocol-stage reveal" data-tab-group>
          <div class="protocol-rail" id="protocolRail" aria-label="Agent to codebase flow">
            <button class="protocol-node is-active" type="button" data-node-index="0">
              <span class="protocol-node-title">Agent</span>
              <span class="protocol-node-copy">plans what to ask</span>
            </button>
            <button class="protocol-node" type="button" data-node-index="1">
              <span class="protocol-node-title">MCP Client</span>
              <span class="protocol-node-copy">list, read, call</span>
            </button>
            <button class="protocol-node" type="button" data-node-index="2">
              <span class="protocol-node-title">MCP Server</span>
              <span class="protocol-node-copy">capabilities + auth</span>
            </button>
            <button class="protocol-node" type="button" data-node-index="3">
              <span class="protocol-node-title">Retrieval Layer</span>
              <span class="protocol-node-copy">search, nav, history</span>
            </button>
            <button class="protocol-node" type="button" data-node-index="4">
              <span class="protocol-node-title">Codebase</span>
              <span class="protocol-node-copy">ground truth</span>
            </button>
          </div>

          <div class="protocol-active">
            <h3 id="protocolTitle">Agent</h3>
            <p id="protocolText">plans what to ask</p>
          </div>

          <div class="protocol-facets">
            <div class="config-tab-row">
              <button class="config-tab is-active" type="button" data-tab-target="resources">Resources</button>
              <button class="config-tab" type="button" data-tab-target="tools">Tools</button>
              <button class="config-tab" type="button" data-tab-target="prompts">Prompts</button>
            </div>

            <div class="facet-panels">
              <div class="facet-panel is-active" data-tab-panel="resources">
                <h3>Read-only context</h3>
                <p>Resources expose structured data to the host: schema-like material, documents, or any other context the agent should be able to read without executing an action.</p>
              </div>
              <div class="facet-panel" data-tab-panel="tools">
                <h3>Executable actions</h3>
                <p>Tools are the workhorses. The agent lists them, then executes focused actions like repo discovery, code search, file reads, symbol navigation, revision comparison, contributor lookup, or Deep Search.</p>
              </div>
              <div class="facet-panel" data-tab-panel="prompts">
                <h3>Reusable templates</h3>
                <p>Prompts package guidance and examples so hosts can reuse proven workflows. They help structure the interaction without overloading every request with boilerplate.</p>
              </div>
            </div>
          </div>
        </div>
      </div>
    </section>

    <section class="section sourcegraph-mcp-section" id="sourcegraph-mcp-works">
      <div class="container">
        <div class="section-heading reveal">
          <h2 class="section-title statement-title">How does Sourcegraph MCP work?</h2>
        </div>

        <div class="mcp-scene reveal" aria-label="Agent to Sourcegraph MCP flow">
          <div class="mcp-scene-stage">
            <section class="mcp-host-zone" aria-labelledby="mcpAgentsTitle">
              <span class="mcp-scene-label" id="mcpAgentsTitle">Agents</span>
              <ul class="mcp-agent-list" aria-label="Agent hosts from the assets agents directory">
                <li class="mcp-agent-list-item">
                  <img class="mcp-agent-logo mcp-agent-logo-claude" src="assets/agents/claude.svg.png" alt="Claude" loading="lazy">
                </li>
                <li class="mcp-agent-list-item">
                  <img class="mcp-agent-logo mcp-agent-logo-amp" src="assets/agents/amp.svg" alt="Amp" loading="lazy">
                </li>
                <li class="mcp-agent-list-item">
                  <img class="mcp-agent-logo mcp-agent-logo-cursor" src="assets/agents/cursor.svg" alt="Cursor" loading="lazy">
                </li>
                <li class="mcp-agent-list-item">
                  <img class="mcp-agent-logo mcp-agent-logo-openai" src="assets/agents/openai.svg" alt="OpenAI" loading="lazy">
                </li>
              </ul>
            </section>

            <div class="mcp-connection mcp-connection-mcp" aria-hidden="true">
              <span class="mcp-connection-label">MCP Tools</span>
            </div>

            <section class="mcp-sourcegraph-zone" aria-labelledby="mcpSourcegraphTitle">
              <span class="mcp-scene-label">Sourcegraph MCP</span>
              <h3 class="mcp-scene-title mcp-sourcegraph-title" id="mcpSourcegraphTitle">Sourcegraph exposes tools for the agent</h3>
              <div class="mcp-sourcegraph-core">
                <div class="mcp-sourcegraph-brand">
                  <span class="mcp-sourcegraph-kicker">MCP Server</span>
                  <img class="mcp-sourcegraph-logo" src="assets/sourcegraph.svg" alt="Sourcegraph" loading="lazy">
                  <p>Discover tools, retrieve context.</p>
                </div>
                <div class="mcp-tool-cluster" aria-label="Sourcegraph MCP tools">
                  <span class="mcp-tool-chip">Search</span>
                  <span class="mcp-tool-chip">Read file</span>
                  <span class="mcp-tool-chip">Definitions</span>
                  <span class="mcp-tool-chip">References</span>
                  <span class="mcp-tool-chip">Diffs</span>
                  <span class="mcp-tool-chip">Deep Search</span>
                </div>
              </div>
            </section>

            <div class="mcp-connection mcp-connection-evidence" aria-hidden="true">
              <span class="mcp-connection-label">Context</span>
            </div>

            <section class="mcp-context-zone" aria-labelledby="mcpContextTitle">
              <span class="mcp-scene-label">Context Window</span>
              <h3 class="mcp-scene-title mcp-context-title" id="mcpContextTitle">The LLM has precise context</h3>
              <div class="mcp-context-shell">
                <div class="mcp-context-bar">
                  <span>Grounded Evidence</span>
                </div>
                <div class="mcp-context-items" aria-hidden="true">
                  <span class="mcp-context-chip">Definition: `settingsMerge.ts`</span>
                  <span class="mcp-context-chip">Reference graph</span>
                  <span class="mcp-context-chip">Read: exact file range</span>
                  <span class="mcp-context-chip">Diff + history</span>
                </div>
              </div>
            </section>
          </div>
        </div>
      </div>
    </section>

    <section class="section-compact">
      <div class="container">
        <div class="loop-mcp-cta reveal">
          <a class="factory-cta" href="./mcp-guide.html">See a concrete Sourcegraph MCP guide →</a>
        </div>
      </div>
    </section>

    <section class="section use-cases-section" id="use-cases">
      <div class="container">
        <div class="section-heading reveal">
          <span class="f-kicker">Use Cases</span>
          <h2 class="section-title statement-title">How your workflow changes with context-aware agents</h2>
        </div>


        <div class="use-case-stage reveal">
          <div class="use-case-list">
            <button class="use-case-trigger is-active" type="button" data-spotlight-key="existing">
              <span class="use-case-name">Understanding Existing Code</span>
              <span class="use-case-note">search + definition + references</span>
            </button>
            <button class="use-case-trigger" type="button" data-spotlight-key="quality">
              <span class="use-case-name">Consistency &amp; Quality</span>
              <span class="use-case-note">codebase conventions</span>
            </button>
            <button class="use-case-trigger" type="button" data-spotlight-key="refactor">
              <span class="use-case-name">Codebase-wide Refactoring</span>
              <span class="use-case-note">references + diffs</span>
            </button>
            <button class="use-case-trigger" type="button" data-spotlight-key="bug">
              <span class="use-case-name">Fixing Bugs</span>
              <span class="use-case-note">history + file reads</span>
            </button>
            <button class="use-case-trigger" type="button" data-spotlight-key="feature">
              <span class="use-case-name">Implementing New Features</span>
              <span class="use-case-note">pattern retrieval</span>
            </button>
            <button class="use-case-trigger" type="button" data-spotlight-key="review">
              <span class="use-case-name">Code Review</span>
              <span class="use-case-note">cross-repo evidence</span>
            </button>
            <button class="use-case-trigger" type="button" data-spotlight-key="debug">
              <span class="use-case-name">Debugging Issues / Troubleshooting</span>
              <span class="use-case-note">deep search</span>
            </button>
          </div>

          <article class="use-case-spotlight">
            <strong data-spotlight-title>Understanding existing code</strong>
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              Ask where a symbol is defined, which services call it, and which docs explain the surrounding architecture. The agent can answer with file paths and dependencies instead of hand-wavy summaries.
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