gsd-validate-phase

gsd-validate-phase is a command for Claude Code, OpenCode from SpillwaveSolutions/agent-brain. It costs 13 tokens per session (250 once invoked), scanned A, original, MIT.

A command for reviewing a completed development phase to find missing validation. It can update the phase's validation record and create test files for checks that were not covered.

In plain words
What is it for?
Use it to audit a finished phase, update its validation document, and generate tests for missing checks.
Why use it?
It helps reveal gaps after work is marked complete, especially when planned checks were skipped. This makes the remaining verification work explicit.

Command for Claude CodeOpenCode

Written for Claude Code and OpenCode: argument-hint in frontmatter, but also installed under .opencode/. Also seen: mentions OpenCode.

Good fit Use it to audit a finished phase, update its validation document, and generate tests for missing checks.

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Install with agentmods
npx agentmods add commands/spillwavesolutions/agent-brain/gsd-validate-phase
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/SpillwaveSolutions/agent-brain

Made for: Claude Code, OpenCode.

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-validate-phase

README.md
[![agentmods](https://agentmods.dev/badge/commands/spillwavesolutions/agent-brain/gsd-validate-phase/github.svg)](https://agentmods.dev/commands/spillwavesolutions/agent-brain/gsd-validate-phase)
Your own site
<a href="https://agentmods.dev/commands/spillwavesolutions/agent-brain/gsd-validate-phase"><img src="https://agentmods.dev/badge/commands/spillwavesolutions/agent-brain/gsd-validate-phase/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 gsd-validate-phase

Your own site · 80×15
<a href="https://agentmods.dev/commands/spillwavesolutions/agent-brain/gsd-validate-phase"><img src="https://agentmods.dev/badge/commands/spillwavesolutions/agent-brain/gsd-validate-phase.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 13 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 250 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 $0.00013 $0.00250
Opus 5.5 $0.00005 $0.00100
Sonnet 5.5 $0.00003 $0.00050
Haiku 4.5 $0.00001 $0.00025

Measured 27d ago against content hash 751f53ae9519, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

gsd-validate-phase 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 27d 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.

.opencode/command/gsd-validate-phase.md · 35 lines

What it actually says

Output: updated VALIDATION.md + generated test files.

<execution_context> @/Users/richardhightower/clients/spillwave/src/agent-brain/.opencode/get-shit-done/workflows/validate-phase.md </execution_context>

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. 27d ago First seen · 35 lines · 13 tokens per session scan A 751f53ae9519

Subscribe to this mod's changes

gsd-validate-phase is a command published in the GitHub repository SpillwaveSolutions/agent-brain (119 stars, last pushed 27d ago), licensed MIT. It adds 13 tokens to every session and 250 once invoked, about $0.0001 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 2026-09-20.