debugging-output-and-previewing-html-using-ray

v2026.09.24

Use when user says "send to Ray," "show in Ray," "debug in Ray," "log to Ray," "display in Ray," or wants to visualize data, debug output, or show diagrams in the Ray desktop application.

GitHub
Install command
npx skhub add spatie/debugging-output-and-previewing-html-using-ray
Markdown
SKILL.md

Ray Skill

Overview

Ray is Spatie's desktop debugging application for developers. Send data directly to Ray by making HTTP requests to its local server.

This can be useful for debugging applications, or to preview design, logos, or other visual content.

This is what the ray() PHP function does under the hood.

Connection Details

SettingDefaultEnvironment Variable
HostlocalhostRAY_HOST
Port23517RAY_PORT
URLhttp://localhost:23517/-

Request Format

Method: POST Content-Type: application/json User-Agent: Ray 1.0

Basic Request Structure

{
  "uuid": "unique-identifier-for-this-ray-instance",
  "payloads": [
    {
      "type": "log",
      "content": { },
      "origin": {
        "file": "/path/to/file.php",
        "line_number": 42,
        "hostname": "my-machine"
      }
    }
  ],
  "meta": {
    "ray_package_version": "1.0.0"
  }
}

Fields

FieldTypeDescription
uuidstringUnique identifier for this Ray instance. Reuse the same UUID to update an existing entry.
payloadsarrayArray of payload objects to send
metaobjectOptional metadata (ray_package_version, project_name, php_version)

Origin Object

Every payload includes origin information:

{
  "file": "/Users/dev/project/app/Controller.php",
  "line_number": 42,
  "hostname": "dev-machine"
}

Payload Types

Log (Send Values)

{
  "type": "log",
  "content": {
    "values": ["Hello World", 42, {"key": "value"}]
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Custom (HTML/Text Content)

{
  "type": "custom",
  "content": {
    "content": "<h1>HTML Content</h1><p>With formatting</p>",
    "label": "My Label"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Table

{
  "type": "table",
  "content": {
    "values": {"name": "John", "email": "john@example.com", "age": 30},
    "label": "User Data"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Color

Set the color of the preceding log entry:

{
  "type": "color",
  "content": {
    "color": "green"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Available colors: green, orange, red, purple, blue, gray

Screen Color

Set the background color of the screen:

{
  "type": "screen_color",
  "content": {
    "color": "green"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Label

Add a label to the entry:

{
  "type": "label",
  "content": {
    "label": "Important"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Size

Set the size of the entry:

{
  "type": "size",
  "content": {
    "size": "lg"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Available sizes: sm, lg

Notify (Desktop Notification)

{
  "type": "notify",
  "content": {
    "value": "Task completed!"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

New Screen

{
  "type": "new_screen",
  "content": {
    "name": "Debug Session"
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

Measure (Timing)

{
  "type": "measure",
  "content": {
    "name": "my-timer",
    "is_new_timer": true,
    "total_time": 0,
    "time_since_last_call": 0,
    "max_memory_usage_during_total_time": 0,
    "max_memory_usage_since_last_call": 0
  },
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}

For subsequent measurements, set is_new_timer: false and provide actual timing values.

Simple Payloads (No Content)

These payloads only need a type and empty content:

{
  "type": "separator",
  "content": {},
  "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
}
TypePurpose
separatorAdd visual divider
clear_allClear all entries
hideHide this entry
removeRemove this entry
confettiShow confetti animation
show_appBring Ray to foreground
hide_appHide Ray window

Combining Multiple Payloads

Send multiple payloads in one request. Use the same uuid to apply modifiers (color, label, size) to a log entry:

{
  "uuid": "abc-123",
  "payloads": [
    {
      "type": "log",
      "content": { "values": ["Important message"] },
      "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
    },
    {
      "type": "color",
      "content": { "color": "red" },
      "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
    },
    {
      "type": "label",
      "content": { "label": "ERROR" },
      "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
    },
    {
      "type": "size",
      "content": { "size": "lg" },
      "origin": { "file": "test.php", "line_number": 1, "hostname": "localhost" }
    }
  ],
  "meta": {}
}

Example: Complete Request

Send a green, labeled log message:

curl -X POST http://localhost:23517/ \
  -H "Content-Type: application/json" \
  -H "User-Agent: Ray 1.0" \
  -d '{
    "uuid": "my-unique-id-123",
    "payloads": [
      {
        "type": "log",
        "content": {
          "values": ["User logged in", {"user_id": 42, "name": "John"}]
        },
        "origin": {
          "file": "/app/AuthController.php",
          "line_number": 55,
          "hostname": "dev-server"
        }
      },
      {
        "type": "color",
        "content": { "color": "green" },
        "origin": { "file": "/app/AuthController.php", "line_number": 55, "hostname": "dev-server" }
      },
      {
        "type": "label",
        "content": { "label": "Auth" },
        "origin": { "file": "/app/AuthController.php", "line_number": 55, "hostname": "dev-server" }
      }
    ],
    "meta": {
      "project_name": "my-app"
    }
  }'

Availability Check

Before sending data, you can check if Ray is running:

GET http://localhost:23517/_availability_check

Ray responds with HTTP 404 when available (the endpoint doesn't exist, but the server is running).

Getting Ray Information

Get Windows

Retrieve information about all open Ray windows:

GET http://localhost:23517/windows

Returns an array of window objects with their IDs and names:

[
  {"id": 1, "name": "Window 1"},
  {"id": 2, "name": "Debug Session"}
]

Get Theme Colors

Retrieve the current theme colors being used by Ray:

GET http://localhost:23517/theme

Returns the theme information including color palette:

{
  "name": "Dark",
  "colors": {
    "primary": "#000000",
    "secondary": "#1a1a1a",
    "accent": "#3b82f6"
  }
}

Use Case: When sending custom HTML content to Ray, use these theme colors to ensure your content matches Ray's current theme and looks visually integrated.

Example: Send HTML with matching colors:


# First, get the theme

THEME=$(curl -s http://localhost:23517/theme)
PRIMARY_COLOR=$(echo $THEME | jq -r '.colors.primary')

# Then send HTML using those colors

curl -X POST http://localhost:23517/ \
  -H "Content-Type: application/json" \
  -d '{
    "uuid": "theme-matched-html",
    "payloads": [{
      "type": "custom",
      "content": {
        "content": "<div style=\"background: '"$PRIMARY_COLOR"'; padding: 20px;\"><h1>Themed Content</h1></div>",
        "label": "Themed HTML"
      },
      "origin": {"file": "script.sh", "line_number": 1, "hostname": "localhost"}
    }]
  }'

Payload Type Reference

TypeContent FieldsPurpose
logvalues (array)Send values to Ray
customcontent, labelHTML or text content
tablevalues, labelDisplay as table
colorcolorSet entry color
screen_colorcolorSet screen background
labellabelAdd label to entry
sizesizeSet entry size (sm/lg)
notifyvalueDesktop notification
new_screennameCreate new screen
measurename, is_new_timer, timing fieldsPerformance timing
separator(empty)Visual divider
clear_all(empty)Clear all entries
hide(empty)Hide entry
remove(empty)Remove entry
confetti(empty)Confetti animation
show_app(empty)Show Ray window
hide_app(empty)Hide Ray window
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Version
Latest version metadata

Version

v2026.09.24

Published

Sep 24, 2026

Category

Uncategorized

License

MIT

Source path

.claude/skills/debugging-output-and-previewing-html-using-ray

Default branch

main

Latest commit

91a2c48

Tree SHA

43c5a3d