[GSOC'26] Template Playground: No-Code Smart Contract Authoring for Non-Technical Legal Users

[JiyaGupta-cs]

Problem Statement

Today, authoring smart legal contracts requires knowledge of Concerto models, TemplateMark syntax, and JSON data inputs. This creates a steep learning curve for lawyers and contract managers, whose expertise is legal drafting, not software development.

Proposed Solution

I propose a form-driven, low-code contract authoring layer that allows lawyers and contract managers to define contract structure, variables, and logic without any knowledge of Concerto or TemplateMark.

HIGH-LEVEL FLOW

Lawyer defines contract data using forms
           ↓
Concerto (.cto) model auto-generated (hidden)
           ↓
Create TemplateMark by Inserting form fields
           ↓
Form-based data entry with validation
           ↓
Simulation and execution of smart legal contract

Step 1: Define Contract Data Using Forms (No Concerto Exposure)

Lawyers define contract variables via guided forms (Add Field → Label, Type, Required).

• Example fields: Client Name (Text), Service Fee (Currency), Duration (Number), Effective Date (Date)
• Variable names and Concerto .cto models are auto-generated and hidden
• No syntax, no code, no technical decisions required
  Output: Valid Concerto model generated behind the scenes

Step 2: Draft Legal Text with Assisted TemplateMark

Lawyers write contracts naturally in a Markdown editor with a toolbar option:

• ➕ Insert Contract Field
• Select a field (e.g., Service Fee)
• Choose formatting (e.g., Currency – $)
• System inserts valid TemplateMark ({{serviceFee}}) automatically
  Output: Error-free TemplateMark, correctly linked to the data model

Step 3: Enter Contract Data via Forms (No JSON)

The system auto-generates a dynamic, validated form from the model:

• Text inputs, number fields, date pickers, currency formatting, etc.
• Built-in validation (required fields, data types, constraints)
  Output: Clean, valid contract data ready for execution

Outcomes

• Zero-code smart contract authoring
• Eliminates Concerto, TemplateMark, and JSON learning curve
• Faster drafting, validation, and iteration
• Significantly improved adoption for legal professionals

Skills required/preferred:

React.js, form-driven UI development, low-code/no-code interface design, dynamic form generation, state management, markdown/editor integration, schema-based validation, component-driven architecture, experience with Concerto, TemplateMark, and JSON editors

Possible Mentors:

@mttrbrts @dselman

Expected size of project:

175 hours (medium)

Expected difficulty:

Medium