deterministic-planner

name	Deterministic Planner
description	Enforces a structural planning phase before execution. Generates and validates PLAN.json to ensure every task has a clear objective, steps, verification method, and rollback strategy.
version	1.0.0
author	Antigravity Skills Library
created	"2026-01-16T00:00:00.000Z"
leverage_score	5/5

SKILL-007: Deterministic Planner

Overview

Complex tasks fail when agents improvise. This skill enforces a "Measure Twice, Cut Once" discipline by requiring a valid PLAN.json artifact before significant changes are made.

Trigger Phrases

• create plan <objective>
• start task <name>
• initialize mission

Inputs

Parameter	Type	Required	Default	Description
--objective	string	Yes	-	High-level goal (e.g., "Refactor gas logic")
--output	string	No	PLAN.json	Output file path

Outputs

1. PLAN.json with the following rigid schema:
   • objective: String
   • steps: Array of Objects { step: int, description: string, verification: string }
   • rollback_strategy: String
   • risks: Array of strings

Preconditions

None.

Safety Checks

• Validates that rollback_strategy is not empty/null.
• Validates that every step has a verification criteria.

Implementation

See init_plan.ps1.

Integration

.\skills\07_deterministic_planner\init_plan.ps1 -Objective "Migrate Database Schema"
# Returns valid JSON structure to fill