Speckle Checker

Speckle Checker is an Automate function that validates Speckle objects against configurable rules defined in a spreadsheet. This approach provides a flexible way to implement quality checks without coding, making it accessible to all team members.

Overview

The Checker function allows you to:

• Define validation rules in a spreadsheet
• Configure severity levels for issues
• Check properties across different types of objects
• Generate reports of validation results
• Apply consistent standards across projects

Getting Started

1. Prepare Your Rule Spreadsheet

1. Access the template spreadsheet
2. Use the Speckle menu to launch the Speckle sidebar and make a copy.
3. Define your rules using the format explained below
4. Publish your rules by clicking "Publish Rules". Copy the resultant URL.

2. Create an Automation

1. Go to your workspace project in Speckle
2. Create a new Automation
3. Select the Checker function
4. Configure the function:
   • Paste your published rules URL
   • Set minimum severity level to report
   • Configure other options as needed
5. Save and run your automation

Rule Definition Format

Rules are defined in a spreadsheet with the following columns:

Rule Number	Logic	Property Name	Predicate	Value	Message	Report Severity
1	WHERE	category	matches	Walls	Wall thickness check	ERROR
1	AND	Width	greater than	200
2	WHERE	category	matches	Columns	Column height check	WARNING
2	AND	height	in range	2500,4000

Column Explanation

• Rule Number: Groups conditions that belong to the same rule
• Logic: Defines how conditions are combined (WHERE, AND, CHECK)
• Property Name: The object property or parameter to check
• Predicate: Comparison operation (equals, greater than, etc.)
• Value: Reference value for comparison
• Message: Description shown in validation results
• Report Severity: ERROR, WARNING, or INFO

Supported Predicates

Predicate	Description	Example
exists	Checks if a property exists	height exists
equal to	Exact value match	width equal to 300
not equal to	Value doesn't match	material not equal to Concrete
greater than	Value exceeds threshold	height greater than 3000
less than	Value below threshold	thickness less than 50
in range	Value within bounds	elevation in range 0,10000
in list	Value in allowed set	type in list W1,W2,W3
contains	Property contains substring	name contains Beam
does not contain	Property doesn't contain	name does not contain temp
is true	Boolean property is true	is_structural is true
is false	Boolean property is false	is_placeholder is false
is like	Loose text matching	name is like Wall matches Walls

Rule Logic

• WHERE: Filters objects to check (like SELECT WHERE in SQL)
• AND: Additional filter conditions
• CHECK: Final check condition (optional, defaults to last AND)

Objects pass a rule when they match all conditions. Objects that match WHERE/AND filters but fail the CHECK condition are reported as issues.

Working with Object Properties

The Checker understands properties in Speckle objects regardless of schema:

• Direct properties: category, name, id
• Nested properties: parameters.WIDTH.value
• Revit parameters: Use parameter names like Mark, Width, Assembly Code

Example Rules

Wall Thickness Check

Rule 1: WHERE category equals "Walls" AND width less than "200"
Message: "Wall too thin - minimum thickness is 200mm"
Severity: ERROR

Door Naming Convention

Rule 2: WHERE category equals "Doors" AND name is not like "^D\d{3}$"
Message: "Door name must follow pattern D followed by 3 digits"
Severity: WARNING

Structural Column Height Range

Rule 3: WHERE category equals "Columns" AND is_structural is true AND height not in range "2400,4000"
Message: "Structural column height outside acceptable range (2400-4000mm)"
Severity: ERROR

Support

For issues or questions, please let us know on the Speckle Community Forum.