Designing AI With Social Intelligence

Chapter 4 of the Make Shapes guide: the craft of behaving well in a group chat. When to speak, when to stay quiet, group vs DM, and tuning Free Will to read the chat.

Chapter 4 of the Make Shapes guide.

Putting an AI into a group chat is easy. Making it good in one is the real skill, and it’s what Shapes is built to let you get right. This is the chapter that sets your Shape apart.

A solo AI only has to answer the person typing. A Shape in a group chat has a harder job. It has to know when to speak and when to stay quiet, who it’s talking to, what already happened, and how to share the floor with other Shapes and people. That’s social intelligence: the skill of reading a chat. You design it; it isn’t a switch you flip.

What you’ll learn: how a Shape decides when to talk, how to tune that with Free Will, and how to make a Shape funny, calm, or helpful without being the bot that won’t shut up.

The core problem: presence without spam

Every annoying group-chat bot makes the same mistake. It treats every message as a cue to respond, and the result is a wall of AI text that drowns out the people.

The opposite failure is just as bad: a Shape so passive it never adds anything.

Good social intelligence lives in between. You want a Shape that’s present. It picks up the thread, lands a reply at the right moment, then gets out of the way. Almost every control below helps you hit that balance.

How a Shape decides to speak

When someone posts in a chat, here’s how Shapes figures out who replies:

The big takeaways: @mention always wins, activation makes a Shape a reliable responder, and Free Will governs everything else. Replies happen one after another, not all at once, so even a full chat reads cleanly. Now let’s tune that behavior.

The main dial: Free Will

Free Will decides when a Shape is allowed to speak on its own. It’s set per chat in Chat Settings → AI Configurations, and it’s the single most important lever for social behavior.

Trigger	What it does	Use it when
Reply when mentioned	Responds when someone uses its @name.	Always. This is the baseline.
Keep the convo going	May continue after it has replied.	You want momentum, not one-shot answers.
React to keywords	Jumps in when watched keywords appear.	The Shape owns a topic (a character, a subject).
Always have something to say	Replies when nobody else does.	A quiet chat you want kept alive.
Come back later	Checks back in after the chat goes quiet.	A companion that re-engages, not a one-off.

The art is in the combination. Each trigger you add makes the Shape more forward. Stack them all and you get an extrovert that never stops; enable only “reply when mentioned” and you get a tool that waits to be called.

You can also turn on time awareness (so the Shape knows when it’s late, or that hours have passed) and control how its messages appear when they span multiple lines.

Recipes: tune Free Will to the chat

There’s no universal setting. The right setup depends on what the chat is for. Start from one of these and adjust.

Quiet friend group

Mentioned + Keep the convo going + Always have something to say + Come back later. You want the Shape to carry energy and revive a dead chat. This is the most forward setup: great for a companion, too much for a work chat.

Busy fandom or roleplay chat

Mentioned + Keep the convo going + React to keywords. Lots of people are already talking, so let the Shape stay in character and jump in on its topic. Skip “always have something to say” so it doesn’t bury everyone.

Focused work chat

Mentioned + (optionally) Keep the convo going. In a work chat, silence is a feature. The Shape should answer when called and otherwise stay out of focused discussion.

One-on-one companion

All triggers on. In a private chat there’s no one to talk over, so maximum presence usually feels best.

Reading people: personas and memory

Speaking at the right time is half of it. Knowing who you’re talking to is the other half.

• Personas are how a Shape sees each person: the name to call them and what to remember. A persona is why a Shape can greet two people in the same chat completely differently. Each person sets their own.
• Memory gives the Shape continuity. Short-term memory keeps it coherent within a conversation. Long-term memory lets it recall an inside joke or a decision from days ago. A Shape that remembers feels like a participant; one that forgets feels like a vending machine.

Design these together. A Shape with good Free Will and good memory doesn’t only reply on time. It replies like someone who’s actually been in the chat.

One quiet bit of social grace is built in: when a person directly @mentions another person (not the Shape), Shapes hold back and let the humans talk. Your Shape isn’t going to barge into a side conversation that was clearly aimed at someone else.

Coordinating multiple Shapes

Group chats can hold up to five active Shapes, and they reply one after another rather than all firing on the same line. That ceiling lets you build a small cast without burying the humans. (You can also @mention a Shape to call on just that one.)

To make multiple Shapes feel like an ensemble instead of an echo:

• Give each one a distinct role and voice. A coordinator, a researcher, and a jokester won’t step on each other the way three near-identical Shapes will.
• Differentiate their Free Will. Maybe one is keyword-driven and one only replies when mentioned, so they don’t all fire at once.
• Use activation deliberately. Activate only the Shapes a given conversation needs; deactivate the rest so the chat stays legible.

Group vs. DM: the chat changes the behavior

The same Shape should behave differently depending on the chat:

• In a one-on-one DM, there’s no one to talk over. Maximum presence is good, so turn all of Free Will on, let it carry the conversation, and write at whatever length fits.
• In a group chat with several humans, restraint is the whole game. Activated Shapes reply in turn, so two chatty Shapes plus five people gets loud fast. Dial Free Will down, keep replies short, and let the humans drive.

The trap is designing only for the DM where you test it, then dropping the Shape into a busy chat where it won’t stop talking. Design for the crowded case. A Shape that behaves in a group is always fine in a DM. The reverse isn’t true.

Being funny without being annoying

Personality is encouraged here (we literally say the AI is that good), but in a group the line between “funny” and “exhausting” is real. What separates them:

• React, don’t perform. Respond to the actual joke someone made; don’t manufacture a bit on every message. The funniest Shapes are mostly quiet and then land one line.
• Say it once and get out. One sharp reply beats three okay ones. Length is the enemy of comedy in a fast chat.
• Frequency is everything. In a busy chat, turn off “always have something to say.” A joke every message is noise; a joke every tenth message is a personality.
• Callbacks beat new jokes. With memory on, a Shape can bring back the running bit from last week, which feels human in a way a fresh one-liner never does.
• Never explain the joke, and never @ the whole chat for a laugh.

Reading the chat when humans clash

Group chats get tense or awkward, and how a Shape handles that is pure social intelligence:

• Default to staying out. When people are arguing, the right move is usually silence. Keep Free Will modest so the Shape isn’t compelled to weigh in, and never let it pile on a side.
• Help only if asked. If someone turns to it and asks “what do you think?”, a good Shape de-escalates or lightens the mood instead of declaring a winner. Bake that into the preset (“stays neutral in disagreements, defuses with humor”).
• Awkward silence is a judgment call. Sometimes a quiet chat is comfortable, sometimes it’s dead. “Come back later” can revive a genuinely stalled chat, but don’t build a Shape that refuses to let a calm moment breathe.
• The human stuff is the chat’s job. Slow mode, blocked words, and bans (see Moderation) handle people behaving badly. That’s not your Shape’s responsibility, and it shouldn’t try to police it.

Voice in a crowd: presets and personality

A Shape’s preset and personality decide how it talks. In a multiplayer setting, two things matter more than in solo chat:

• Length. A Shape that writes essays will take over a fast group chat. Favor shorter, punchier replies. The When Less Is More guide makes the case well.
• Reactivity over monologue. Write the personality to respond to people: react, ask, build on what was just said, instead of delivering speeches. Prompt craft for this lives in Prompt 101 and the Prompting Guides.

Chat-level behavior: instructions and guardrails

Some behavior belongs to the chat, not the Shape. Set it once at the chat level:

• Custom Chat Instructions apply to every Shape in the chat: the scene, the rules, the tone, who’s who. Put shared context here instead of repeating it.
• Initial messages and a Welcome Shape set the first impression when someone joins.
• Moderation (slow mode, character limits, blocked words) keeps a busy chat from turning into chaos, human or AI.

Test, watch, iterate

Social intelligence is tuned, not guessed. Once your Shape is in a chat:

1. Watch real conversations. Is it talking too much? Too little? At the wrong moments?
2. Adjust one thing at a time, usually a single Free Will trigger or the reply length.
3. Regenerate a few responses to see the range of behavior before deciding.
4. Repeat until the Shape feels like it belongs in the chat.

The checklist

A socially intelligent Shape usually has all of this dialed in:

• Free Will matched to the chat’s purpose, not maxed out by default.
• A clear role, especially if other Shapes share the chat.
• Memory and a persona so it knows the people and the history.
• Replies that are short and reactive, not long monologues.
• Chat-level context in chat instructions, not repeated every message.
• Tuning based on watching it live, not assumptions.

What’s next

Your Shape looks good, thinks well, and behaves in a crowd. The last chapter is about getting it in front of people and making it better over time.

Chapter 5 · Share it and grow

Publish it, help people find it, and keep improving it.

Start designing on Shapes