OpenCode CLI - Streaming

Overview

This example demonstrates real-time streaming output from the OpenCode CLI. Text and tool calls are displayed as they arrive, with AgentCtrlConsoleLogger providing execution lifecycle visibility alongside the streaming output.

Key concepts: - executeStreaming(): Execute with real-time output - onText() / onToolUse(): Callbacks for streaming events - AgentCtrlConsoleLogger: Shows execution lifecycle alongside streaming - OpenCode exposes cost and session information

Example

<?php
require 'examples/boot.php';

use Cognesy\AgentCtrl\AgentCtrl;
use Cognesy\AgentCtrl\Broadcasting\AgentCtrlConsoleLogger;

// Console logger for execution lifecycle visibility
$logger = new AgentCtrlConsoleLogger(
    useColors: true,
    showTimestamps: true,
    showToolArgs: true,
);

$toolCalls = [];

echo "=== Agent Execution Log ===\n\n";

$response = AgentCtrl::openCode()
    ->wiretap($logger->wiretap())
    ->onText(function (string $text) {
        echo $text;
    })
    ->onToolUse(function (string $tool, array $input, ?string $output) use (&$toolCalls) {
        $target = $input['command'] ?? $input['file_path'] ?? $input['pattern'] ?? '';
        if (strlen($target) > 40) {
            $target = '...' . substr($target, -37);
        }
        $toolCalls[] = $tool;
        echo "\n  >> [{$tool}] {$target}\n";
    })
    ->executeStreaming('Read the first 5 lines of composer.json in this directory and describe what you see.');

echo "\n=== Result ===\n";
echo "Tools used: " . implode(' > ', $toolCalls) . "\n";
echo "Total tool calls: " . count($toolCalls) . "\n";

if ($response->usage) {
    echo "Tokens: {$response->usage->input} in / {$response->usage->output} out\n";
}
if ($response->cost) {
    echo "Cost: $" . number_format($response->cost, 4) . "\n";
}

if (!$response->isSuccess()) {
    echo "Error: Command failed with exit code {$response->exitCode}\n";
    exit(1);
}
?>

Expected Output

=== Agent Execution Log ===

14:32:15.123 [opencode] [EXEC] Execution started [prompt=Read the first 5 lines of composer.json...]
14:32:15.234 [opencode] [PROC] Process started [commands=5]
I'll read the first 5 lines of composer.json.
14:32:16.234 [opencode] [TOOL] Read {file_path=composer.json}

  >> [Read] composer.json

The first 5 lines of composer.json show:
- The project name and description
- The license type
- Autoload configuration
14:32:17.890 [opencode] [DONE] Execution completed [exit=0, tools=1, cost=$0.0012, tokens=98]

=== Result ===
Tools used: Read
Total tool calls: 1
Tokens: 42 in / 56 out
Cost: $0.0012

Key Points

• Real-time output: Text appears as the agent generates it
• Tool visibility: See each tool call with arguments as it executes
• Console logger: Execution lifecycle events interleaved with streaming output
• Cost visibility: OpenCode provides cost tracking in the response