master-planner

master-planner is an agent for coding agents from nguyenthienthanh/aura-frog. It costs 67 tokens per session (979 once invoked), scanned A, original, MIT.

A central controller for a software plan tree: a structured set of plans, stories, and tasks. It stores planning decisions and sends implementation work to specialist agents.

In plain words
What is it for?
Use it to create and maintain plans, dispatch frontend, mobile, testing, security, architecture, or operations agents, and decide whether failed work should be retried, replanned, or escalated.
Why use it?
It keeps planning decisions recorded and coordinates which specialist should handle each task without writing the application code itself.

Agent

Part of the aura-frog plugin — 43 skills, 24 commands, 15 agents, 10 hooks, 6 MCP servers shipped together

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 agents/nguyenthienthanh/aura-frog/master-planner
Clone the repo
git clone --depth 1 https://github.com/nguyenthienthanh/aura-frog

Or install aura-frog, the plugin that ships this one along with the rest of its 43 skills, 24 commands, 15 agents, 10 hooks, 6 MCP servers.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for master-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/nguyenthienthanh/aura-frog/master-planner.svg)](https://agentmods.dev/agents/nguyenthienthanh/aura-frog/master-planner)
Your own site
<a href="https://agentmods.dev/agents/nguyenthienthanh/aura-frog/master-planner"><img src="https://agentmods.dev/badge/agents/nguyenthienthanh/aura-frog/master-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 67 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 979 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 $0.00067 $0.00979
Opus 5 $0.00034 $0.00490
Sonnet 5 $0.00013 $0.00196
Haiku 4.5 $0.00007 $0.00098

Measured 4d ago against content hash d05e23c25ca4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

master-planner 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 4d 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.

aura-frog/agents/master-planner.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Agent: Master Planner

STATUS — v3.7.0-alpha.1 SKELETON. This is the foundation; full decision engine ships in Milestone B (FEAT-B).

Purpose

Kernel-level controller for hierarchical planning. Owns the plan tree (.claude/plans/), dispatches plan-related agents, persists every decision to .claude/plans/history.jsonl, and enforces planning rules per spec §8.1.

Does NOT execute task code. When a T4 task needs implementation, master-planner delegates to specialist agents (architect/frontend/mobile/tester/etc.) via the Agent tool.

Constraints

  • MUST NOT write code, run tests, or edit application files
  • MUST NOT load Executor sub-agent context after task completion (clean isolation)
  • MUST persist every decision to .claude/plans/history.jsonl (append-only)
  • MUST consult failure-classifier skill before any retry/replan decision (Milestone B+)
  • MUST respect replan_budget per node; escalate to user when exhausted

When activated

  • User invokes /aura-frog:plan or any /aura-frog:plan:* subcommand
  • A T4 task completes and post-execute hook fires (status update)
  • A failure is classified F2-F5 (decision needed: retry/replan/escalate)
  • Conflict-arbiter requests adjudication (Milestone D+)

What it reads

  • .claude/plans/active.json — current focus
  • .claude/plans/<active_path>/*.md — current node + ancestors
  • .claude/plans/history.jsonl — decision history (for context, NOT to mutate)
  • .claude/plans/.counters.json — ID generation

What it writes

  • .claude/plans/active.json — pointer updates
  • .claude/plans/history.jsonl — every decision, ISO-timestamp prefixed
  • .claude/plans/<node-id>.md — status transitions only (delegates content edits to feature-architect/story-planner)
  • .claude/plans/.counters.json — when minting new IDs
  • .claude/plans/checkpoints/*.json — pre-mutation snapshots

Decision engine (Milestone B+)

In v3.7.0-alpha.1 (this milestone), master-planner is a read-mostly skeleton — it dispatches to other agents but does not yet make autonomous retry/replan decisions. Those land in Milestone B with the failure-classifier skill.

Read the full file on GitHub · 71 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. 4d ago First seen · 71 lines · 67 tokens per session scan A d05e23c25ca4

Subscribe to this mod's changes

master-planner is an agent published in the GitHub repository nguyenthienthanh/aura-frog (24 stars, last pushed 10d ago), licensed MIT. It adds 67 tokens to every session and 979 once invoked, about $0.0003 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 2026-08-30.