diff --git a/README.md b/README.md
index c793185..d66275c 100644
--- a/README.md
+++ b/README.md
@@ -18,15 +18,16 @@ Tracybot is a tool that traces AI-generated code back to the prompts that create
 - **Audit Trail** - Review AI interactions to verify, debug, or understand code origins
 - **Team Sync** - Push traces to remote for team collaboration
 
-## Architecture
+## Supported Agents and Editors
 
-Tracybot consists of three components that work together:
+### Supported Agents
+- **OpenCode CLI** — Install the [opencode-plugin](./opencode-plugin/README.md) to automatically record snapshots during AI interactions. 
+Requires OpenCode CLI to be installed - https://opencode.ai
 
-- **[opencode-plugin](./opencode-plugin/README.md)** - Plugin for opencode CLI that records snapshots during AI interactions
-- **[vscode-extension](./vscode-extension/README.md)** - VS Code extension to view AI blame information
-- **[tracybot-tracking](./tracking/README.md)** - Git hooks and scripts for state tracking using hidden commits and synced git notes
+### Supported Editors
+- **VS Code** — Install the [vscode-extension](./vscode-extension/README.md) to view AI blame information. 
+Available on the [VS Code Marketplace](https://marketplace.visualstudio.com/items?itemName=TracyTeam.tracybot-extension).
 
-More information, including the requirements that resulted in these architectural decisions, are on the [wiki](https://github.com/TracyTeam/tracybot/wiki/Architecture).
 
 ## Quick Start
 
@@ -71,6 +72,16 @@ You can install it either:
 
 After OpenCode makes changes in an initialized repository, Tracybot records snapshots automatically. Click `AI Blame` in VS Code to inspect the prompt history behind the current file.
 
+## Architecture
+
+Tracybot consists of three components that work together:
+
+- **[opencode-plugin](./opencode-plugin/README.md)** - Plugin for opencode CLI that records snapshots during AI interactions
+- **[vscode-extension](./vscode-extension/README.md)** - VS Code extension to view AI blame information
+- **[tracybot-tracking](./tracking/README.md)** - Git hooks and scripts for state tracking using hidden commits and synced git notes
+
+More information, including the requirements that resulted in these architectural decisions, are on the [wiki](https://github.com/TracyTeam/tracybot/wiki/Architecture).
+
 ## Troubleshooting
 
 ### Common Issues
diff --git a/vscode-extension/src/pluginCheck.ts b/vscode-extension/src/pluginCheck.ts
index d82894f..afb6fb2 100644
--- a/vscode-extension/src/pluginCheck.ts
+++ b/vscode-extension/src/pluginCheck.ts
@@ -2,10 +2,12 @@ import * as vscode from 'vscode';
 import * as fs from 'fs';
 import * as path from 'path';
 import { homedir } from 'os';
+import { spawn } from 'child_process';
 
 const PLUGIN_FILENAME = 'tracybot-oc.js';
 const PLUGIN_URL = 'https://github.com/TracyTeam/tracybot/releases/latest/download/tracybot-oc.js';
 const SKIP_CHECK_KEY = 'tracybot.skipPluginCheck';
+const SKIP_OPENCODE_MISSING_KEY = 'tracybot.skipOpencodeMissingCheck';
 
 const Actions = {
   InstallGlobally: 'Install Globally',
@@ -37,8 +39,40 @@ async function installPluginTo(dir: string): Promise<void> {
   fs.writeFileSync(destPath, Buffer.from(await response.arrayBuffer()));
 }
 
+async function findOpencode(): Promise<boolean> {
+  try {
+    await new Promise<void>((resolve, reject) => {
+      const proc = spawn('opencode', ['--version'], { stdio: 'ignore' });
+      proc.on('close', code => (code === 0 ? resolve() : reject()));
+      proc.on('error', reject);
+    });
+    return true;
+  } catch {
+    return false;
+  }
+}
+
 export async function checkOpencode(context: vscode.ExtensionContext): Promise<void> {
   if (context.globalState.get<boolean>(SKIP_CHECK_KEY)) { return; }
+
+  const opencodeAvailable = await findOpencode();
+  if (!opencodeAvailable) {
+    if (context.globalState.get<boolean>(SKIP_OPENCODE_MISSING_KEY)) { return; }
+
+    const action = await vscode.window.showInformationMessage(
+      'Tracybot AI change tracing requires a supported agent.',
+      'View Supported Agents',
+      'Don\'t Show Again'
+    );
+
+    if (action === 'View Supported Agents') {
+      vscode.env.openExternal(vscode.Uri.parse('https://github.com/TracyTeam/tracybot#supported-agents-and-editors'));
+    } else if (action === 'Don\'t Show Again') {
+      await context.globalState.update(SKIP_OPENCODE_MISSING_KEY, true);
+    }
+    return;
+  }
+
   if (fs.existsSync(getGlobalPluginPath())) { return; }
 
   const projectPath = getProjectPluginPath();