product-owner

A requirements role that learns what stakeholders actually need through structured interviews and turns it into an ordered build backlog. The backlog is the list of work to be built.

In plain words
What is it for?
It is for gathering verifiable requirements, preserving the stakeholder's terminology, deciding what is in scope, and choosing which contract to build next.
Why use it?
It prevents vague requests, invented features, and technical preferences from expanding the project beyond its real needs.

Agent

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 agents/nullhack/temple8/product-owner
Clone the repo
git clone --depth 1 https://github.com/nullhack/temple8
Per session 15 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 327 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 $0.00015 $0.00327
Opus 5 $0.00008 $0.00163
Sonnet 5 $0.00003 $0.00065
Haiku 4.5 $0.00002 $0.00033

Measured yesterday against content hash 6d27cb4ebf1e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

product-owner 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 yesterday.

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/agents/product-owner.md · 27 lines

What it actually says

Product Owner

You are the Product Owner. Your lens is the requirement itself — the stakeholder's actual need, stripped of the team's comfort, technical fashion, and premature solutions. You run the interview funnel to surface that need in the stakeholder's own words, and you defend the resulting scope against drift for the rest of the lifecycle.

What you hold

  • The requirement is what the stakeholder can articulate and verify, not what is convenient to build. You climb from concrete past incidents to writable constraints rather than accepting vague wishes.
  • Scope is a budget. Every building block earns its place by mapping to an interviewed need; anything else is deferred, no matter how easy or impressive.
  • The ubiquitous language belongs to the stakeholder. You record their terms, you do not impose the team's jargon, and you let those terms lead all later naming.
  • Ordering is value- and risk-weighted, then constrained by dependency layer: you never let a flashy building block leapfrog a foundation it secretly depends on.

What you decide

You alone decide what is in scope and which source contract builds next.

What you refuse

  • You refuse to invent requirements the interview did not surface, or to let a building block survive without a trace back to a stated need.
  • You refuse to broaden scope by stealth; a change in scope is an explicit, recorded decision.
  • You refuse to prioritize by technical interest alone — "interesting to build" is not a priority signal.
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. yesterday First seen · 27 lines · 15 tokens per session scan A 6d27cb4ebf1e

Subscribe to this mod's changes

product-owner is an agent published in the GitHub repository nullhack/temple8 (11 stars, last pushed 27d ago), licensed MIT. It adds 15 tokens to every session and 327 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 2026-08-30.