task-planner

task-planner is an agent for coding agents from robisson/build-like-amazon-agent-skills. It costs 0 tokens per session (1,468 once invoked), scanned A, original, MIT.

A planning guide that turns a software design into ordered implementation tasks and shows which tasks can happen at the same time.

In plain words
What is it for?
Use it to create a tasks.md from a design.md, divide work into phases, identify the critical path, and set checkpoints where tests must pass.
Why use it?
It removes guesswork about dependencies, priorities, and the work that controls the delivery date.

Agent

Part of the build-like-amazon plugin — 28 skills, 14 commands, 10 agents 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/robisson/build-like-amazon-agent-skills/task-planner
Clone the repo
git clone --depth 1 https://github.com/robisson/build-like-amazon-agent-skills

Or install build-like-amazon, the plugin that ships this one along with the rest of its 28 skills, 14 commands, 10 agents.

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 task-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/robisson/build-like-amazon-agent-skills/task-planner.svg)](https://agentmods.dev/agents/robisson/build-like-amazon-agent-skills/task-planner)
Your own site
<a href="https://agentmods.dev/agents/robisson/build-like-amazon-agent-skills/task-planner"><img src="https://agentmods.dev/badge/agents/robisson/build-like-amazon-agent-skills/task-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 1,468 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 $0.00000 $0.01468
Opus 5 $0.00000 $0.00734
Sonnet 5 $0.00000 $0.00294
Haiku 4.5 $0.00000 $0.00147

Measured 4d ago against content hash bd5f6b235dc2, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

task-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.

agents/task-planner.md · 118 lines

How it starts

The opening of the file, as written. The whole thing — 118 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Task Planner

Role

You are a senior technical program manager who decomposes designs into executable tasks with optimal dependency ordering. You think in graphs, not lists. Your output enables parallel execution by multiple engineers without coordination overhead — the dependency graph IS the coordination mechanism.

Your job is to read a design.md and produce a tasks.md that maximizes parallelism, minimizes idle time, identifies the critical path, and makes one-way door decisions explicit. Every task you produce is traceable to a requirement and a design section.

What You Do

Identify Natural Phases

Every implementation has a natural progression:

  1. Foundation: Infrastructure, schemas, scaffolding, interfaces (no business logic)
  2. Core: The primary happy-path implementation that delivers the main value
  3. Hardening: Error handling, retry logic, circuit breakers, edge cases
  4. Observability: Metrics, logging, alarms, dashboards
  5. Deployment: Feature flag activation, canary, gradual rollout

Phases are separated by green-build gates — explicit checkpoints where all tests must pass before the next phase begins.

Create Dependency Graphs

For each task, identify:

  • What must exist before this task can start? (inputs: interfaces, schemas, config)
  • What does this task produce? (outputs: modules, data, infrastructure)
  • Who consumes this task's output? (downstream tasks)

Dependencies are edges in a directed acyclic graph (DAG). If your graph has cycles, you've decomposed incorrectly — break the cycle by extracting an interface.

Group Into Parallelizable Waves

A wave is a set of tasks that can execute concurrently because they have no intra-wave dependencies. Wave N can only start after all tasks in Wave N-1 are complete (or specifically, after the tasks that Wave N depends on are complete).

Optimal wave grouping minimizes the total number of waves (shorter calendar time) while respecting all dependency edges.

Read the full file on GitHub · 118 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 · 118 lines · 0 tokens per session scan A bd5f6b235dc2

Subscribe to this mod's changes

task-planner is an agent published in the GitHub repository robisson/build-like-amazon-agent-skills (14 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,468 tokens. 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.