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hdd-decide-brief

hdd-decide-brief is a command for Claude Code from Kastalien-Research/thoughtbox. It costs 6 tokens per session (249 once invoked), scanned A, original, MIT.

A decision workflow that compares validation results with the acceptance criteria in a staging Architecture Decision Record (ADR).

In plain words
What is it for?
Use it to accept or reject an ADR, move it to the appropriate folder, summarize its impact or lessons, and record the final decision.
Why use it?
It ensures technical decisions are based on recorded evidence and preserves what was learned from failed approaches.

Command for Claude Code

Written for Claude Code: installed under .claude/.

not rated 66repo 3mo ago A scan 6 tokens original MIT

Good fit Use it to accept or reject an ADR, move it to the appropriate folder, summarize its impact or lessons, and record the final decision.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/kastalien-research/thoughtbox/decide-brief
View source ↗ Kastalien-Research/thoughtbox thoughtbox.kastalienresearch.ai
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/Kastalien-Research/thoughtbox

Made for: Claude Code.

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 hdd-decide-brief

README.md
[![agentmods](https://agentmods.dev/badge/commands/kastalien-research/thoughtbox/decide-brief/github.svg)](https://agentmods.dev/commands/kastalien-research/thoughtbox/decide-brief)
Your own site
<a href="https://agentmods.dev/commands/kastalien-research/thoughtbox/decide-brief"><img src="https://agentmods.dev/badge/commands/kastalien-research/thoughtbox/decide-brief/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for hdd-decide-brief

Your own site · 80×15
<a href="https://agentmods.dev/commands/kastalien-research/thoughtbox/decide-brief"><img src="https://agentmods.dev/badge/commands/kastalien-research/thoughtbox/decide-brief.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 6 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 249 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00006 $0.00249
Opus 5.5 $0.00002 $0.00100
Sonnet 5.5 $0.00001 $0.00050
Haiku 4.5 $0.00001 $0.00025

Measured 1mo ago against content hash 024d5805009b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

hdd-decide-brief 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 1mo 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.

apps/web/.claude/commands/hdd/modules/decide-brief.md · 43 lines

What it actually says

HDD Decide Module

Inputs

  • task_goal
  • paths_to_inspect
  • acceptance_checks
  • staging_adr_path
  • hypothesis_results

Steps

  1. Evaluate validation outcomes against acceptance criteria.
  2. Determine decision: accept or reject.
  3. If accept, migrate ADR to accepted path and summarize impact.
  4. If reject, migrate ADR to rejected path with failure learnings.
  5. Emit final workflow decision record.

Outputs

  • status
  • summary
  • artifacts
  • open_risks
  • decision

Stop Conditions

  • Success: ADR migrated to accepted or rejected with rationale.
  • Failure: decision cannot be made due to incomplete validation.
  • Escalation: user checkpoint required but unavailable.
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. 1mo ago First seen · 43 lines · 6 tokens per session scan A 024d5805009b

Subscribe to this mod's changes

hdd-decide-brief is a command published in the GitHub repository Kastalien-Research/thoughtbox (66 stars, last pushed 3mo ago), licensed MIT. It adds 6 tokens to every session and 249 once invoked, about $0.0000 per session on Opus 5.5. 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.

Claude CodePlanningWriting and docsai-agentsclaudeclaudecodemcpmodel-context-protocol
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