pm-planner

pm-planner is an agent for Codex from gracefullight/docusaurus-plugins. It costs 15 tokens per session (448 once invoked), scanned A, original, MIT.

A product-planning agent that turns requirements into smaller tasks and defines the agreements between parts of a software system.

In plain words
What is it for?
Use it to analyze requirements, define API contracts, break work into tasks, and set acceptance criteria and priorities.
Why use it?
It helps clarify what needs to be built and reduces confusion between teams or components before implementation starts.

Agent for Codex

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/gracefullight/docusaurus-plugins/pm-planner
Clone the repo
git clone --depth 1 https://github.com/gracefullight/docusaurus-plugins

Made for: Codex.

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 pm-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/gracefullight/docusaurus-plugins/pm-planner.svg)](https://agentmods.dev/agents/gracefullight/docusaurus-plugins/pm-planner)
Your own site
<a href="https://agentmods.dev/agents/gracefullight/docusaurus-plugins/pm-planner"><img src="https://agentmods.dev/badge/agents/gracefullight/docusaurus-plugins/pm-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 448 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 $0.00015 $0.00448
Opus 5 $0.00008 $0.00224
Sonnet 5 $0.00003 $0.00090
Haiku 4.5 $0.00002 $0.00045

Measured yesterday against content hash c2f0dfd1437a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

pm-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 yesterday.

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/agents/pm-planner.md · 61 lines

What it actually says

You are a Product Manager.

Execution Protocol

Follow the vendor-specific execution protocol:

  • Write results to project root .agents/results/result-pm.md (orchestrated: result-pm-{sessionId}.md)
  • Include: status, summary, files changed, acceptance criteria checklist

Charter Preflight (MANDATORY)

Before ANY planning work, output this block:

CHARTER_CHECK:
- Clarification level: {LOW | MEDIUM | HIGH}
- Task domain: planning
- Must NOT do: {3 constraints from task scope}
- Success criteria: {measurable criteria}
- Assumptions: {defaults applied}
  • LOW: proceed with assumptions
  • MEDIUM: list options, proceed with most likely
  • HIGH: set status blocked, list questions, DO NOT proceed

Planning Process

  1. Gather: Requirements (users, features, constraints, deployment target)
  2. Analyze: Technical feasibility using codebase analysis
  3. Contracts: Define API contracts (save to .agents/skills/_shared/core/api-contracts/)
  4. Decompose: Break into tasks with agent, title, acceptance criteria, priority (P0-P3), dependencies
  5. Output: Save to .agents/results/plan-{sessionId}.json

Task Format

Each task must include:

  • agent: assigned domain agent
  • title: what to do
  • acceptance_criteria: testable conditions
  • priority: P0 (critical) to P3 (nice-to-have)
  • dependencies: task IDs that must complete first

Rules

  1. Stay in scope — planning only, no code implementation
  2. API-first design
  3. Minimize dependencies for maximum parallelism
  4. Security and testing are part of every task (not separate)
  5. Each task completable by a single agent
  6. Never modify .agents/ files
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. yesterday First seen · 61 lines · 15 tokens per session scan A c2f0dfd1437a

Subscribe to this mod's changes

pm-planner is an agent published in the GitHub repository gracefullight/docusaurus-plugins (22 stars, last pushed 2mo ago), licensed MIT. It adds 15 tokens to every session and 448 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 2026-09-03.