plan-decide

A command for resolving design and implementation decisions one at a time before or during planning.

In plain words
What is it for?
Use it to review known decisions from research or a plan, or to discover unknown decisions by examining the design and codebase. It can save the final summary to a file.
Why use it?
It makes open choices explicit and records the agreed direction instead of leaving important decisions implicit or unresolved.

Command

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 commands/xonovex/platform/plan-decide
Clone the repo
git clone --depth 1 https://github.com/xonovex/platform
Per session 22 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 353 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 $0.00022 $0.00353
Opus 5 $0.00011 $0.00177
Sonnet 5 $0.00004 $0.00071
Haiku 4.5 $0.00002 $0.00035

Measured 2d ago against content hash 47f65531ae7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

plan-decide 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 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.

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.

packages/command/command-workflow/commands/plan-decide.md · 34 lines

What it actually says

/xonovex-workflow:plan-decide - Settle Decisions One at a Time

Lifecycle: research → decide → create → revise ⇄ critique → accept → subplans-create → continue → update → validate

Arguments

  • topic-or-plan-file (optional): A feature idea/topic, or a research/plan file. Auto-detects queued open decisions first (research findings in the current conversation, then the most recent plan); with none queued, discovers decisions instead.
  • --save-to <file> (optional): Save the consolidated agreed-direction summary to a file

Modes

  • Walk (open decisions are queued): present each known decision as a full brief: files involved, explanation, options with pros and cons, recommendation, one per message, recording your call before the next.
  • Discover (nothing queued): surface unknown decisions by walking the design tree one question at a time, exploring the codebase to self-answer what it can, until shared understanding is reached.

Delegation

Load the plan-guide skill (plugin xonovex-skill-plan) and perform its decide operation with these arguments. The skill is the source of truth for the procedure, output format, and gotchas. Do not restate them.

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 · 34 lines · 22 tokens per session scan A 47f65531ae7b

Subscribe to this mod's changes

plan-decide is a command published in the GitHub repository xonovex/platform (5 stars, last pushed 2d ago), licensed MIT. It adds 22 tokens to every session and 353 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 2026-08-31.