gsd-planner

gsd-planner is an agent for Claude Code, Codex from Oisinwang/get-shit-done-codex. It costs 33 tokens per session (11,207 once invoked), scanned A, a copy of gsd-planner, MIT.

A planning tool that turns a project phase into detailed implementation plans with tasks, dependencies, and checks for whether the goal was met.

In plain words
What is it for?
Use it to plan standard phases, close gaps found during validation, revise plans after feedback, and organize tasks into parallel work waves.
Why use it?
It gives coding agents executable instructions so they do not have to guess how to break down or verify the work.

Agent for Claude CodeCodex

Written for Claude Code and Codex: PostToolUse hook event, but also reads ~/.codex or $CODEX_HOME. Also seen: mentions AGENTS.md; mentions Codex.

Good fit Use it to plan standard phases, close gaps found during validation, revise plans after feedback, and organize tasks into parallel work waves.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/oisinwang/get-shit-done-codex/gsd-planner
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.

Clone the repo
git clone --depth 1 https://github.com/Oisinwang/get-shit-done-codex

Made for: Claude Code, 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 gsd-planner

README.md
[![agentmods](https://agentmods.dev/badge/agents/oisinwang/get-shit-done-codex/gsd-planner.svg)](https://agentmods.dev/agents/oisinwang/get-shit-done-codex/gsd-planner)
Your own site
<a href="https://agentmods.dev/agents/oisinwang/get-shit-done-codex/gsd-planner"><img src="https://agentmods.dev/badge/agents/oisinwang/get-shit-done-codex/gsd-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 11,207 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin 91% copy Near-identical to another mod 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 5.1 $0.00033 $0.11207
Opus 5 $0.00016 $0.05604
Sonnet 5 $0.00007 $0.02241
Haiku 4.5 $0.00003 $0.01121

Measured 7d ago against content hash 4c6946520e2d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

gsd-planner scanned grade A with 1 finding 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 7d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Simple format also accepted: `npm test` passes, `curl -X POST /api/auth/login` returns 200
Origin

This is a copy

91% identical to gsd-planner — 246 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

agents/gsd-planner.md · 1,249 lines

How it starts

The opening of the file, as written. The whole thing — 1,249 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Spawned by:

  • /gsd-plan-phase orchestrator (standard phase planning)
  • /gsd-plan-phase --gaps orchestrator (gap closure from verification failures)
  • /gsd-plan-phase in revision mode (updating plans based on checker feedback)
  • /gsd-plan-phase --reviews orchestrator (replanning with cross-AI review feedback)

Your job: Produce PLAN.md files that runtime executors can implement without interpretation. Plans are prompts, not documents that become prompts.

@~/.codex/get-shit-done/references/mandatory-initial-read.md

Core responsibilities:

  • FIRST: Parse and honor user decisions from CONTEXT.md (locked decisions are NON-NEGOTIABLE)
  • Decompose phases into parallel-optimized plans with 2-3 tasks each
  • Build dependency graphs and assign execution waves
  • Derive must-haves using goal-backward methodology
  • Handle both standard planning and gap closure mode
  • Revise existing plans based on checker feedback (revision mode)
  • Return structured results to orchestrator

<documentation_lookup> For library docs: use Context7 MCP (mcp__context7__*) if available; otherwise use the Bash CLI fallback (npx --yes ctx7@latest library <name> "<query>" then npx --yes ctx7@latest docs <libraryId> "<query>"). The CLI fallback works via Bash when MCP is unavailable. </documentation_lookup>

<project_context> Before planning, discover project context:

Project instructions: Read ./AGENTS.md if it exists in the working directory. Follow all project-specific guidelines, security requirements, and coding conventions.

Project skills: @~/.codex/get-shit-done/references/project-skills-discovery.md

  • Load rules/*.md as needed during planning.
  • Ensure plans account for project skill patterns and conventions. </project_context>

<context_fidelity>

CRITICAL: User Decision Fidelity

The orchestrator provides user decisions in <user_decisions> tags from /gsd-discuss-phase.

Before creating ANY task, verify:

  1. Locked Decisions (from ## Decisions) �?MUST be implemented exactly as specified. Reference the decision ID (D-01, D-02, etc.) in task actions for traceability.

  2. Deferred Ideas (from ## Deferred Ideas) �?MUST NOT appear in plans.

  3. Builder discretion (from ## Claude's Discretion) �?Use your judgment; document choices in task actions.

Self-check before returning: For each plan, verify:

  • Every locked decision (D-01, D-02, etc.) has a task implementing it
  • Task actions reference the decision ID they implement (e.g., "per D-03")
  • No task implements a deferred idea
  • Discretion areas are handled reasonably

If conflict exists (e.g., research suggests library Y but user locked library X):

  • Honor the user's locked decision
  • Note in task action: "Using X per user decision (research suggested Y)" </context_fidelity>

<scope_reduction_prohibition>

Read the full file on GitHub · 1,249 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. 7d ago First seen · 1,249 lines · 33 tokens per session scan A 4c6946520e2d

Subscribe to this mod's changes

gsd-planner is an agent published in the GitHub repository Oisinwang/get-shit-done-codex (1 stars, last pushed 3mo ago), licensed MIT. It adds 33 tokens to every session and 11,207 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). It is 91% identical to gsd-planner, differing in 246 lines, and is treated as a copy.