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.
npx skills add product-on-purpose/pm-skills --skill develop-adrgit clone --depth 1 https://github.com/product-on-purpose/pm-skillsWrote 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.
[](https://agentmods.dev/skills/product-on-purpose/pm-skills/develop-adr)<a href="https://agentmods.dev/skills/product-on-purpose/pm-skills/develop-adr"><img src="https://agentmods.dev/badge/skills/product-on-purpose/pm-skills/develop-adr.svg" alt="Measured on agentmods" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector pass
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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00044 | $0.00998 |
| Opus 5 | $0.00022 | $0.00499 |
| Sonnet 5 | $0.00009 | $0.00200 |
| Haiku 4.5 | $0.00004 | $0.00100 |
Grade A, and why
develop-adr 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Architecture Decision Record (ADR)
An Architecture Decision Record documents a significant technical decision along with its context and consequences. ADRs capture the "why" behind architectural choices so future team members understand the reasoning - especially important when they question why something was done a particular way. This skill follows Michael Nygard's lightweight ADR format.
When to Use
- Making significant technical decisions that affect system architecture
- Choosing between technology options (frameworks, databases, services)
- Establishing patterns that future development should follow
- Documenting the rationale for constraints or non-obvious approaches
- Preserving institutional knowledge about past decisions
When NOT to Use
- The decision is a product or UX design choice, not architecture or technology -> use
develop-design-rationale - You are still exploring whether an approach is feasible -> time-box the exploration and record it with
develop-spike-summaryfirst - You need to pitch a solution to stakeholders -> use
develop-solution-brief; an ADR records a decision, it does not sell one - Nothing is actually being decided (the status quo continues unchanged): an ADR without a decision is noise; wait until there is one
Instructions
When asked to create an ADR, follow these steps:
-
Assign a Number and Title ADRs are numbered sequentially (ADR-001, ADR-002, etc.) for easy reference. The title should be a short noun phrase describing the decision, like "Use PostgreSQL for order data" or "Adopt React for frontend."
-
Set the Status New ADRs start as "Proposed." After team review, they become "Accepted," "Deprecated," or "Superseded by ADR-XXX." Status changes should be tracked.
-
Describe the Context Explain the circumstances that led to this decision. What problem are you solving? What forces are at play (technical constraints, team expertise, timeline, cost)? This section should help a reader who wasn't there understand why this decision was needed.
What ships with it
6 files 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.
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.
- 8d ago First seen · 74 lines · 44 tokens per session scan A acab95233131
develop-adr is a skill published in the GitHub repository product-on-purpose/pm-skills (647 stars, last pushed 2d ago), licensed Apache-2.0. It adds 44 tokens to every session and 998 once invoked, about $0.0002 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 2026-08-30.
Other skills, from other repositories
idea-validator
Use when the user asks to validate a product idea, stress-test an idea, evaluate whether an idea is good, or decide whether to build something. Do NOT use for prioritizing an existing backlog or reviewing a shipped feature — those need RICE scoring or a design review instead.
product-designer
Use when the user asks to review a design, critique a UI or mockup, give design feedback, or check a screen for usability and accessibility issues. Do NOT use for visual brand or aesthetic preference debates, or for reviewing copy before layout is settled.
prompt-engineer
Use when the user asks to improve, optimize, rewrite, debug, or shorten a prompt, or asks why a prompt is producing bad output. Do NOT use for writing a Claude Code SKILL.md — that needs skill structure rules, not prompt techniques.
status-update-writer
Use when the user asks to write a status update, weekly or monthly update, stakeholder update, project update, standup, status report, or QBR. Do NOT use for writing a PRD or a retro doc — those need different structures.
linkedin-post-writer
Use when the user asks to write, draft, or rewrite a LinkedIn post, turn notes or an article into a LinkedIn post, or fix a hook that is not landing. Do NOT use for X/Twitter threads, newsletters, or blog posts — those need different length and hook rules.
spec-from-conversation
Turn an unstructured stakeholder conversation, Slack thread, or meeting transcript into a structured spec (problem, goals, non-goals, success metrics, open questions). Use whenever a PM has raw conversational input and needs a first-draft spec, or when someone says "can you turn this into a doc" after a discussion.…