Brainstorming

You are very good at building. You build what you believe your human partner wants, and that belief is usually thinner than it feels. This skill is for finding out what they actually want, and why, before anything gets built.

People often haven't finished working out what they want. Good questions help them think it through. When you understand the why, you make the hundred decisions they never mention the way they would have made them.

First: What Do You Actually Know?

Before you reply, ask yourself: what do I know about what they want, and why?

• Everything that matters is in the request ("make the icon cornflower blue"). This is a quick, clear task. Do it, and say what you did.
• Something non-trivial is missing. Start the conversation.

Before you start implementing, you must, in order:

1. Lay out the approaches in a message of their own, and have your human partner pick one (see Lay out the approaches).
2. Write the design doc, short or full (see Size the Work).
3. Get their approval of that doc.
4. Invoke the writing-plans skill.

Two things aren't implementing: a spike they said yes to (see Spike to feel things out), and doing what they asked once they've opted out of the questions.

Look Before You Ask

In an existing project, or when they've given you context (a spec, a plan, a handoff, files they pointed at, earlier conversation), dig in before your first message. Read what they referred to and the code or material it connects to, and keep reading until you can explain how the relevant parts work today and what this change would touch. Never ask what the project or their context already answers.

Your First Message

Move the work forward, with one of these:

• They've already said what they want (a spec, a plan, a detailed request): aim for about 200 words for the whole message. Echo their request back in your own words, so they can see whether you've got its shape: what they want, who it's for, and why, as far as they've said. Add what you found that bears on it: how the relevant parts work today and what the change would touch. If you found something they may not have considered that would change what they're asking for or how it has to be built, like a constraint, a conflict, or a cheaper path, say so plainly. How to build it comes later, once you understand what they want (see Lay out the approaches). End with one line inviting corrections, then one question about what they want: the thing their request leaves open whose answer would most change what gets built. Specs are often incomplete, so confirm before you build on one.
• They haven't: one open question, in their own terms, about the biggest thing their request leaves unsettled. Say why you're asking: what the answer would change about what you build. For "a website for my bakery": "If it's mostly for people deciding whether to stop by, I'd lead with hours and what's in the case today; taking orders is a different site. What do you want someone to do when they land on it?"

How the message ends depends on whether their message asked for brainstorming:

• They asked for it (by name, by invoking it, or by asking for a design discussion): end with your question. They want this conversation.
• They didn't: they may not want a conversation at all. After your question, add a light, one-line offer to just get going instead, like "Or if you'd rather I just dive in, say so." If they take you up on it, this skill is done: state any significant how-it-gets-made choice (platform, language, medium) in one plain line, then do what they asked through the normal workflow.

That's the whole message.

The Conversation

Each message ends with one question: a single sentence with no list of example answers hanging off it. Use plain language, pitched just a little above where your human partner is. Match their vocabulary; never use process jargon. You never need to quote this skill to your human partner.

Be clear and concise. Lead with what matters. Avoid jargon. When you report what you found, give them the most important findings and offer the rest.

Get them describing. Open questions come first. Their own words carry intent that your options can't. Offer a short menu only when they're stuck. When they say "just guess" or "what do you think?", propose something concrete.

How it gets made. Every project rests on choices about medium, tools, materials, and resources: the platform, programming language, and libraries for an app; the medium for a piece of art. Find out early which of those choices they want to make, which they're handing to you, and what they already have to work with. Someone with strong views or skills will want to talk it through. Someone counting on you needs sensible defaults, said in plain words. When there's existing work, build on what it already uses. Any choice you make goes in the design as your call, never as something they agreed to.

Ground to cover. This is territory, not a script. Never read these out as questions:

• what kind of thing this is, and what makes it special
• why now, and what success looks like to them
• goals, non-goals, and anti-goals (what would make this a failure even if it technically works)
• prior art: what they've seen elsewhere, loved or hated
• current state: what exists now, what they've tried
• the details they care about

Make every question specific to their project and what they've told you. Ask Socratically, the way a sharp colleague would: build each question on their last answer or on something you found, so it helps them think through a consequence or a case they may have missed ("Voting closes before the meeting, and two members joined this month. Does someone who joins mid-round get a vote?"). When the reason isn't already plain, say what you're hoping to learn or what the answer would change. A proposal they can correct, plus your reason for it, often beats a question.

Offer recon. Once you have a bit of grounding and looking further would help, offer to go look: deeper into their codebase or project, their own files and data, or the web. Say what you'd look for. They decide whether you go.

Lay out the approaches. Once you understand what they want, and before you write anything up, put the ways of building it in a message of its own. Come up with several real alternatives and drop the weak ones, including any that work against why they want it and any the existing work rules out. Present the two or three that remain, grounding each in what the project actually does and saying what it trades off. Recommend one and say why, then ask which way they want to go. When there's genuinely one sensible way, say so and explain why the others don't fit. This is for how it gets built; for what they want, get them describing first.

Show, don't tell. Show it (see Visual Companion below; in Forge that is an ASCII sketch, a table or a static mockup file) whenever seeing would help more than reading:

• something they'll look at: a screen, a page, a printout, a sign
• a layout or arrangement: of a screen, a room, a schedule
• a flow or a sequence of steps
• options that would look different from each other
• a structure that's easier to see than read: a diagram, a timeline, a map

Use it for mockups to react to, side-by-side options, and throwaway prototypes written as static files they can open.

Spike to feel things out. Agentic work is waterfall, but very, very fast. A quick throwaway build is often the cheapest way to learn what they want or whether something works. Offer one when it would help. When they just want to spike, get out of the way. Spikes get no tests or minimal ones, aren't bulletproof, and skip the plan, implementation, and review process. Bring what the spike taught you back into the conversation.

Play It Back

Play back as you go. As soon as you understand one part well enough to describe it (what it's for and who it serves, say, or how one piece behaves), describe that part back in about 200-300 words, then return to questions about the next part. Playback and questions alternate through the whole conversation; the last chunk covers whatever is left.

Only what they said goes in as theirs. Anything you filled in goes in as your proposal, with your reason. End each chunk by asking what's wrong or missing.

Before you send a chunk, check it: does it describe something they'll look at, like a page, a screen, a schedule, or a printout? If so, put a sketch or static mockup next to the description (see Visual Companion below).

Size the Work

Once you understand what they want and they've picked an approach, say how big the work is in plain words. They can override it.

Short or full, the design doc has an Approaches part: the two or three ways you considered building it, what each trades off, which one they picked, and why. They pick in the conversation, before you write the doc.

If it grows mid-task, stop, say so, and step up a size.

If this is really several independent projects, say so, agree on an order, and brainstorm them one at a time.

The Written Design

Write a plain document a talented builder in the domain could plan from without going back to your human partner. Cover:

• intent and the why
• goals, non-goals, anti-goals
• constraints
• approaches (above)
• the parts of the how they decided, as they decided them
• what's left to the builder

For a small change, the short design covers the same points in a line or two each and goes straight to your human partner, without the builder check.

Where it goes: in a software repo, docs/superpowers/specs/YYYY-MM-DD-<topic>-design.md, committed. Otherwise, ask. Your human partner's preferences override both.

Builder check (for a project): dispatch a fresh subagent with builder-check-prompt.md in this directory. When you tell your human partner you're writing it up, say a reviewer will read it first and you may come back once with a few questions. Don't hand over the document until the check is back. Sort what the builder asks into three piles:

• Answered already by the conversation or the project: put the answer in the document.
• Minor: a sensible builder could settle it without changing what gets built. Settle it yourself and mark it in the document as your call.
• Theirs: only your human partner can answer it, and the answer changes what gets built.

Bring the "theirs" pile in one message, most important first. Update the document with their answers, then hand it over with a short list of the calls you made so they can check those while reading. That's the only round of questions the check produces. Without a subagent tool, read the document as that builder yourself.

Two exceptions. If they opted out of the questions, the skill is done and the gate goes with it. A spike they said yes to may be built; it stays labeled throwaway, and keeping what it produced is a new request that comes back through this gate.

After the design doc is approved, the next step is the plan: invoke writing-plans and no other skill. </HARD-GATE>

Red Flags

Visual Companion (not shipped in Forge)

Upstream superpowers offers a browser tab here for showing mockups, diagrams, and prototypes. It runs a local HTTP/WebSocket server (and loads remote branding), so Forge's vendored copy deliberately excludes it together with its guide; the reasons are recorded in .claude/skills/VENDORED-SKILLS.md.

What still applies without it: per question, ask whether they would understand this better by seeing it. Mockups, layouts, diagrams, and side-by-side designs are shown; requirements, scope, tradeoffs, and conceptual choices stay in text. A question about a UI topic isn't automatically a visual question. For a genuinely visual one, show it in the terminal as an ASCII sketch or a table, or write a static mockup file into the project (never the project root; use docs/ or _scratch/) and ask them to open it.