Kanshō/Message bubble

Message bubble

The container every message in the conversation lives inside. User on the right, assistant/tool on the left, system messages centred. Carries author, timestamp, status, and footer slot.

Included in the single kansho full pack. Components are not offered as separate installs.

Conversation — typical flow

Static preview: the pinned message actions are callback-less

Audit-log review

5 messages · branch audit-log

SystemRun started · research-writer · main·
You
Can you summarise the last 5 commits on the audit-log branch and flag anything that looks like a regression?
Assistant

I'll pull the log, scan the diffs for risky patterns (deletes, env changes, migrations), and write a short rundown.

gittool
git log --oneline -n 5 origin/audit-log
Assistant

Three of the five commits are doc-only. The fourth adds a new event type to the audit log enum — that touches the persistence layer and should be reviewed against the existing index.

Boxed assistant reply

Opt back into the box with variant='bubble'; static preview: footer actions are callback-less
You
Walk me through how the audit-log writer batches its flushes.
Assistant

The writer keeps an in-memory ring buffer and flushes on two triggers: a 200ms timer and a 64-entry high-water mark, whichever comes first. Flushing drains the buffer into a single batched insert, so a burst of events costs one round-trip rather than one per event.

States

user — sending
YouSending…
Pulling repo now…
assistant — error
AssistantFailed
The shell command exceeded the 60s timeout. I can retry with a narrower scope.
Retry available · model: claude-opus-4-7
tool — output
postgrestool
SELECT count(*) FROM audit_log WHERE event = 'delete';
system — centred
SystemBranch switched to audit-log-fix·

Compact density

Quick operator thread

Compact chat container

You
ack.
Assistant
Noted, sir.
You
One more thing — open the run details panel.
Assistant
On it.

Rich assistant message states

Static preview: message actions are callback-less; source pills open real links

Chain-of-thought variants

claude-opus-4-7

The safest implementation keeps the session token out of JavaScript and writes it from the Route Handler.

app/api/session/route.tsts
response.cookies.set("session", token, {
  httpOnly: true,
  sameSite: "lax",
  secure: true,
});
Assistant
Session token flow diagram
Suggested token handoff sketch
session-token-flow.png · 1.2 MB
Assistant

I need to distinguish storage from transport before writing code, otherwise the answer reads like a preference instead of a security boundary.

  • Token storage: HttpOnly cookie.
  • Cookie flags: Secure, SameSite=Lax.
  • Route Handler writes the cookie after signing.

Component documentation

Message Bubble

components/agent/message-bubble.tsx

Purpose

Frames a user, assistant, system, or tool message with optional author, time, status, metadata, and footer.

Appropriate use

Use as the message-level container in a conversation; use MessageGroup for consecutive same-author bursts.

Example

components/agent/message-bubble.tsx has a representative live example in the "Conversation — typical flow" section on /components/message-bubble.

States

Roles are user, assistant, system, and tool; statuses are sending, streaming, sent, and error; density is comfortable or compact and variant is prose or bubble.

API and props

MessageBubble accepts role, author, timestamp, status, children, meta, footer, density, variant, hideHeader, and className.

Dependencies

Direct imports are React, Lucide icons, AgentDot, Tag, Time, and cn.

Accessibility

Errors use alert semantics and the Sending label is a polite live update; streaming status is not announced, while parseable timestamps use Time.

Limitations

It does not stream content, group authors, retry failures, or manage announcements across an entire thread.

Source

Source: components/agent/message-bubble.tsx.

Full pack

components/agent/message-bubble.tsx is documented at /components/message-bubble and installs only through the single Kansho full pack; no individual component install is offered.