executing-plans

A method for carrying out a prepared implementation plan by grouping related work and coordinating it across parts of a codebase. Independent areas can be worked on separately while related work shares context.

In plain words
What is it for?
Use it when implementing a standard or complex plan involving several features, subsystems, agents, tests, or integration points.
Why use it?
It reduces repeated investigation and makes complex implementation work easier to track. It also brings unclear requirements and important design choices to attention before coding begins.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/rileyhilliard/agentrc/executing-plans
Any agent
npx skills add rileyhilliard/agentrc --skill executing-plans
Clone the repo
git clone --depth 1 https://github.com/rileyhilliard/agentrc

Made for: Claude Code, Codex.

Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,284 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00028 $0.01284
Opus 5 $0.00014 $0.00642
Sonnet 5 $0.00006 $0.00257
Haiku 4.5 $0.00003 $0.00128

Measured 2d ago against content hash 8a38c9f9c8b3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

executing-plans scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agentrc/skills/executing-plans/SKILL.md · 126 lines

How it starts

The opening of the file, as written. The whole thing — 126 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Executing Plans

You are an orchestrator. Spawn and coordinate sub-agents to do the actual implementation. Group related tasks by subsystem (e.g., one agent for API routes, another for tests) rather than spawning per-task. Each agent re-investigates the codebase, so fewer agents with broader scope = faster execution.

1. Setup

Create a branch for the work unless trivial. Consider git worktrees for isolated environments.

Clarify ambiguity upfront: If the plan has unclear requirements or meaningful tradeoffs, use AskUserQuestion before starting. Present options with descriptions explaining the tradeoffs. Use multiSelect: true for independent features that can be combined; use single-select for mutually exclusive choices. Don't guess when the user can clarify in 10 seconds.

Track progress with tasks: Use TaskCreate to create tasks for each major work item from the plan. Update status with TaskUpdate as work progresses (in_progress when starting, completed when done). This makes execution visible to the user and persists across context compactions.

2. Group Tasks by Subsystem

Group related tasks to share agent context. One agent per subsystem, groups run in parallel.

Why grouping matters:

Without: Task 1 (auth/login) → Agent 1 [explores auth/]
         Task 2 (auth/logout) → Agent 2 [explores auth/ again]

With:    Tasks 1-2 (auth/*) → Agent 1 [explores once, executes both]
Signal Group together
Same directory prefix src/auth/* tasks
Same domain/feature Auth tasks, billing tasks
Plan sections Tasks under same ## heading

Limits: 3-4 tasks max per group. Split if larger.

Parallel: Groups touch different subsystems

Group A: src/auth/*    ─┬─ parallel
Group B: src/billing/* ─┘

Sequential: Groups have dependencies

Group A: Create shared types → Group B: Use those types

3. Execute

Dispatch sub-agents to complete task groups. Monitor progress and handle issues.

Read the full file on GitHub · 126 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 126 lines · 28 tokens per session scan A 8a38c9f9c8b3

Subscribe to this mod's changes

executing-plans is a skill published in the GitHub repository rileyhilliard/agentrc (3 stars, last pushed 6mo ago), licensed MIT. It adds 28 tokens to every session and 1,284 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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