gsd-plan-checker

A plan review agent that checks whether a proposed project phase plan can reach its stated goal.

In plain words
What is it for?
Use it to review plans created for a GSD project phase before execution.
Why use it?
It can reveal missing steps or weak assumptions before work begins.

Agent for Claude Code

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/alienware2000/intentionality/gsd-plan-checker
Clone the repo
git clone --depth 1 https://github.com/Alienware2000/intentionality

Made for: Claude Code.

Per session 36 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 5,064 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00036 $0.05064
Opus 5 $0.00018 $0.02532
Sonnet 5 $0.00007 $0.01013
Haiku 4.5 $0.00004 $0.00506

Measured 2d ago against content hash 7432297ea358, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

gsd-plan-checker 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 2d 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.

fix_hint: "Add <verify> with curl command or test command to confirm endpoint works"
.claude/agents/gsd-plan-checker.md · 746 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. 2d ago First seen · 746 lines · 36 tokens per session scan A 7432297ea358

Subscribe to this mod's changes

gsd-plan-checker is an agent published in the GitHub repository Alienware2000/intentionality (5 stars, last pushed 3mo ago), with no licence file. It adds 36 tokens to every session and 5,064 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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