validate-discovery

validate-discovery is a skill for Claude Code, Codex from kohj1018/agentic-dev-harness. It costs 33 tokens per session (329 once invoked), scanned A, a copy of accept-milestone, MIT.

A workflow for checking whether product-discovery work is ready to use. Product discovery is the process of learning what users need and defining the problem before building software.

In plain words
What is it for?
Use it when you explicitly run $validate-discovery, optionally with a reviewer tag, to review discovery documents.
Why use it?
It helps reveal unsupported assumptions, missing evidence, or incomplete planning before implementation begins.

Skill for Claude CodeCodex

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 skills/kohj1018/agentic-dev-harness/validate-discovery
Any agent
npx skills add kohj1018/agentic-dev-harness --skill validate-discovery
Clone the repo
git clone --depth 1 https://github.com/kohj1018/agentic-dev-harness

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 validate-discovery

README.md
[![agentmods](https://agentmods.dev/badge/skills/kohj1018/agentic-dev-harness/validate-discovery.svg)](https://agentmods.dev/skills/kohj1018/agentic-dev-harness/validate-discovery)
Your own site
<a href="https://agentmods.dev/skills/kohj1018/agentic-dev-harness/validate-discovery"><img src="https://agentmods.dev/badge/skills/kohj1018/agentic-dev-harness/validate-discovery.svg" alt="Measured on agentmods" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 329 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin 83% 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 $0.00033 $0.00329
Opus 5 $0.00016 $0.00164
Sonnet 5 $0.00007 $0.00066
Haiku 4.5 $0.00003 $0.00033

Measured 4d ago against content hash a0791d5fcc9b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

validate-discovery 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 4d 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.

Origin

This is a copy

83% identical to accept-milestone — 10 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/skills/validate-discovery/SKILL.md · 15 lines

What it actually says

Source of truth: .claude/skills/validate-discovery/SKILL.md (skill 신설 근거: ADR-044; wrapper 승격: ADR-010#amend-4). Read it and follow the workflow.

Treat all frontmatter keys other than name and description (e.g., agent:, disable-model-invocation:, allowed-tools:, context:, argument-hint:, model:, effort:) as Claude-only and ignore them — execute locally in Codex.

Slash command translation: 본문 grep 실측상 실제 슬래시 커맨드는 /repair-discovery·/validate-plan 2개다 — 각각 $repair-discovery·$validate-plan으로 안내한다. /discover-product는 wrapper 미보유 skill이므로 "Follow .claude/skills/discover-product/SKILL.md" 자연어 호출로 안내한다. 자기 이름 /validate-discovery 표기는 본문에 없음(등장 시 $validate-discovery로 추가 안내). Codex CLI는 /를 빌트인 슬래시 커맨드에 쓰므로 명시적 치환이 필요.

Preserve all repo policies from AGENTS.md and docs/.

If the source path no longer exists, this wrapper is stale — see ADR-010.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 4d ago First seen · 15 lines · 33 tokens per session scan A a0791d5fcc9b

Subscribe to this mod's changes

validate-discovery is a skill published in the GitHub repository kohj1018/agentic-dev-harness (2 stars, last pushed 7d ago), licensed MIT. It adds 33 tokens to every session and 329 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. It is 83% identical to accept-milestone, differing in 10 lines, and is treated as a copy.

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