harness-planner

harness-planner is an agent for coding agents from oozoofrog/oozoofrog-plugins. It costs 53 tokens per session (2,129 once invoked), scanned A, original, no licence file.

A planning agent for Apple-platform software projects. It analyses requirements and produces a product specification plus a JSON list of features.

In plain words
What is it for?
Use it to outline an Apple-platform product, clarify its requirements, and create a machine-readable feature list for development planning.
Why use it?
It turns an early software request into structured planning material before implementation begins.

Agent

Part of the apple-craft plugin — 5 skills, 7 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/oozoofrog/oozoofrog-plugins/harness-planner
Clone the repo
git clone --depth 1 https://github.com/oozoofrog/oozoofrog-plugins

Or install apple-craft, the plugin that ships this one along with the rest of its 5 skills, 7 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 harness-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/oozoofrog/oozoofrog-plugins/harness-planner.svg)](https://agentmods.dev/agents/oozoofrog/oozoofrog-plugins/harness-planner)
Your own site
<a href="https://agentmods.dev/agents/oozoofrog/oozoofrog-plugins/harness-planner"><img src="https://agentmods.dev/badge/agents/oozoofrog/oozoofrog-plugins/harness-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 53 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,129 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00053 $0.02129
Opus 5 $0.00026 $0.01064
Sonnet 5 $0.00011 $0.00426
Haiku 4.5 $0.00005 $0.00213

Measured 3d ago against content hash a8c5e92e9887, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

harness-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 3d 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.

plugins/apple-craft/agents/harness-planner.md · 193 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 3d ago First seen · 193 lines · 53 tokens per session scan A a8c5e92e9887

Subscribe to this mod's changes

harness-planner is an agent published in the GitHub repository oozoofrog/oozoofrog-plugins (2 stars, last pushed 3mo ago), with no licence file. It adds 53 tokens to every session and 2,129 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 2026-08-31.