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Build (Grade A)Security-tested development skill for Claude AI. Grade A. Execute all plans in a phase. Spawns agents to build in parallel, commits atomically.

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Daniel NikulshynReviewed by Daniel Nikulshyn·Updated July 2026

Overview

Build (Grade A) is a security-tested development skill for Claude AI that executes all plans in a phase by spawning agents to build in parallel and committing changes atomically. It's designed to be lean, delegating all building work to Task() subagents while keeping the user's main context window clean. The skill follows universal orchestrator rules for context budget management and agent type resolution. It supports features like lazy-loading steps, multi-session sync, and argument parsing for flexible phase execution. The skill is part of the plan-build-run system, which emphasizes parallel execution, atomic commits, and deviation handling.

Key features

  • Parallel plan execution
  • Atomic commits
  • Lazy-loading steps
  • Multi-session sync
  • Argument parsing
  • Agent team support

Pricing

Model
Free
Category
Skills
Rating
No reviews yet

Use cases

Automated Build Phase

Executing all plans in a specified phase with parallel building and atomic commits.

Customized Phase Execution

Using argument parsing to build only gap-closure plans or specifying a different model for executor spawns.

Pros & Cons

Pros

  • Executes plans in parallel for efficient phase completion
  • Delegates work to subagents for a clean main context window
  • Supports lazy-loading steps for context budget management
  • Handles multi-session sync for concurrent access
  • Flexible argument parsing for customized phase execution

Cons

  • Requires .planning/config.json and planned phases
  • Dependent on prior phase dependencies being completed
  • May have limitations based on context budget and agent capabilities

Reviews

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Q&A

Can the skill run across multiple sessions simultaneously?

Yes, it supports multi‑session sync, allowing concurrent access and execution while maintaining atomic commits to ensure consistency.

Asked by Ahmed Saleh · Sep 11, 2025

How does Build (Grade A) manage context to keep the main window clean?

It delegates all building work to subagents and uses lazy‑loading of steps, fetching step instructions on demand. Only summary data from SUMMARY.md is read unless the context budget allows full content.

Asked by Bilal Choudhury · Jul 31, 2025

What are the main limitations of using this skill?

It requires a .planning/config.json file and pre‑completed prior phase dependencies. Performance can be constrained by the context budget and the capabilities of the available agent types.

Asked by Gabriel Duarte · Jul 3, 2025

How does Build (Grade A) handle multiple tasks in a single phase?

The skill spawns separate Task subagents for each plan in a phase, executing them in parallel when independent. Dependent plans wait until their prerequisites complete, ensuring coordinated progress.

Asked by Vincenzo Greco · May 20, 2025

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