Show & Tell

Aggregate a day's work into a presentation-ready artifact for team show & tell. Not a status report — a demonstration. Show what was built, prove it works, share what was learned.

When to Use

• Before daily show & tell meeting
• User says "prep for show and tell", "prepare my demo", "what did I ship today"
• End of day when user wants to capture the day's outcomes

When NOT to Use

• Mid-session check-ins (use handoff instead)
• Written documents for async consumption (use create-briefing instead)
• Commit-level summaries (use recall-commit instead)

Philosophy

Show, don't tell. A show & tell is not a standup. Nobody wants to hear "I worked on the auth module." They want to see the login flow working, the test suite passing, the before/after performance numbers.

The agent's job: help the human prepare a compelling 3-5 minute demo by gathering evidence, curating highlights, and assembling a clean artifact the human can walk through with the team.

Curate ruthlessly. A day might have 15 commits across 3 repos. The show & tell should cover 2-4 highlights. More than that and it's a status report.

Evidence > description. For every highlight, include at least one piece of evidence: command output, a screenshot, a test run, a before/after comparison. If you can't demonstrate it, it's not a show & tell item — it's a bullet point.

Invocation

/show-and-tell — Prepare demo for today's work (default: last 24 hours) /show-and-tell 2d — Cover the last 2 days (after weekends, sick days) /show-and-tell [repo-path] — Scope to a specific repo

Procedure

Phase 1: Gather

Collect from four sources: git, local session history, Atlas (Slack + team context), and Notion. Run independent queries in parallel.

1a. Git & GitHub

# Commits in the period (all branches)
git log --all --oneline --since="24 hours ago" --author="$(git config user.email)"

# Branches touched
git for-each-ref --sort=-committerdate --format='%(refname:short) %(committerdate:relative) %(subject)' refs/heads/ | head -20

# PRs created/merged (if gh available)
gh pr list --author @me --state all --search "created:>=$(date -v-24H +%Y-%m-%d)" 2>/dev/null

# Current AGENT-LEARNINGS.md entries from the period
# (read the file and filter by date)

Also check:

• AGENT-LEARNINGS.md for today's entries (filter by Author if present)
• .claude/project-diary.md for decisions made
• Any open PRs with review status

1b. Local Session History

Work that never became a commit still leaves traces in Claude Code's session logs and auto-memory. Scan for non-commit work from the period:

# Find recent session transcript files (last 24h)
find ~/.claude/projects/ -name "*.jsonl" -mtime -1 2>/dev/null

For each recent transcript, use Grep to search for high-signal patterns:

• "tool":"Write" or "tool":"Edit" — files the agent worked on
• "tool":"WebFetch" or "tool":"WebSearch" — research performed
• "tool":"Bash" — commands run (builds, tests, deploys, investigations)

Also check the project's auto-memory directory (~/.claude/projects/*/memory/) for any notes saved during the period.

Don't read full transcripts — they're huge. Grep for patterns, extract summaries. The goal is to surface work the user might have forgotten: a research session that didn't produce code, a debugging investigation, a design discussion.

Present anything found that isn't already in git:

"I also found these sessions not reflected in commits:

• [Time] Research on [topic] (web searches, file reads)
• [Time] Debugging [issue] (no fix committed yet)

Include any of these in the demo?"

1c. Atlas — Team Context & Slack Activity

If Atlas MCP is available, run these queries:

# Team context — what others shipped (for framing your own work)
get_daily_summary

# Your Slack activity — messages, links shared, discussions
search_all_summaries with query: "[user's name] [today's date]"

# Recent updates that might include your Slack messages, threads, shared artifacts
get_recent_updates

Slack often captures work that doesn't land in git: sharing a finding with the team, answering a question, posting a link to a resource, discussing architecture in a thread. These are legitimate show & tell material — especially when the work was helping others rather than shipping code.

1d. Notion — Recently Created Pages

If Notion MCP is available, search for pages the user created or modified in the period:

API-post-search with query: "[user's name]"
  — filter by last_edited_time in the past 24 hours

Look for: design docs, RFCs, meeting notes, project pages, research notes. If the user created or substantially edited a Notion page, that's work worth surfacing — it may be more demo-worthy than the code that preceded it.

Phase 2: Curate

From the raw material, identify the 2-4 most demo-worthy items. Rank by:

1. Visible impact — Can you show it? UI changes, new CLI commands, API responses, test output. Prioritize things the team can see.
2. Significance — Does this unblock others? Ship a feature? Fix a painful bug? Resolve a hard technical problem?
3. Interest — Would the team find this interesting, surprising, or useful for their own work? A clever debugging approach counts.

Cut mercilessly. Dependency upgrades, config tweaks, and routine refactors are not show & tell material unless they solved a real problem worth sharing.

Present the curated highlights to the user for confirmation before proceeding:

"I found these as today's highlights:

1. [Item] — [one-line why it's interesting]
2. [Item] — [one-line why it's interesting]

Want me to adjust before I gather evidence?"

Phase 3: Evidence

For each highlight, capture at least one piece of concrete evidence. Choose the most appropriate type:

Command output — Run a command, capture the result:

• Test suite passing: pnpm test or equivalent
• CLI tool working: run it with sample input
• Build succeeding: pnpm build output
• API response: curl or equivalent

Screenshot — For visual/UI work, use chrome-devtools MCP:

• Navigate to the relevant page
• Take a screenshot
• If before/after matters, capture both (use git stash to show the before state, then pop to show after)

Diff summary — For architectural or refactoring work:

• Key file diffs that show the shape of the change
• Metric improvements (bundle size, test count, coverage delta)

Test output — For bug fixes and reliability work:

• Show the specific test that now passes
• Show coverage improvement

Keep evidence gathering fast. If a demo requires spinning up infrastructure or complex setup, describe what would be shown and note it as a live demo candidate. Don't burn 10 minutes on evidence for a 3-minute slot.

Phase 4: Compose

Assemble the artifact. Write to file using the output format below.

Embed evidence inline — command output in code blocks, screenshots as image references, diffs as collapsed details.

Phase 5: Deliver

Save the artifact:

docs/show-and-tell/YYYY-MM-DD.md

Create the directory if it doesn't exist. If multiple repos were involved, save to the primary repo (where the skill was invoked).

Offer next steps:

"Demo artifact saved to docs/show-and-tell/YYYY-MM-DD.md. Want me to also publish this to Notion?"

If user confirms Notion publication and Notion MCP is available, create a page under the team's show & tell database/page.

Output Format

# Show & Tell — YYYY-MM-DD

**[Your Name]** · [Repo(s)] · [N commits, N PRs]

---

## 1. [Highlight Title]

[2-3 sentences: What this is, why it matters, who it affects.]

**Evidence:**

\`\`\`
$ [command that demonstrates it]
[actual output]
\`\`\`

<!-- Or for screenshots: -->
<!-- ![Description](path/to/screenshot.png) -->

<!-- Or for diffs: -->
<!-- <details><summary>Key changes</summary> ... </details> -->

---

## 2. [Highlight Title]

[2-3 sentences: What this is, why it matters, who it affects.]

**Evidence:**

\`\`\`
$ [command]
[output]
\`\`\`

---

## Learnings

[1-2 key insights from AGENT-LEARNINGS.md that the team would benefit from.
Skip if nothing team-relevant was captured today.]

- **[Insight]**: [One sentence directive — "Do X, not Y" or "X works because Y"]

---

## Up Next

[1-2 sentences on what's planned for tomorrow. Helps team see the trajectory
and flag dependencies or coordination needs.]

Format Principles

• Headlines that stand alone. A teammate scanning should get the gist from titles and opening sentences without reading evidence blocks.
• Evidence is optional to read. It's there to support claims during the live demo, not to be read line-by-line. Use collapsible sections for long output.
• No filler sections. If there are no team-relevant learnings, omit the section. If there's only one highlight, that's fine — one strong demo beats four weak ones.
• Present tense. "This adds..." not "I added..." — focus on the work, not the narrator.

Rules

• Always confirm highlight selection with the user before gathering evidence.
• Never fabricate evidence. If a command fails, show the failure or skip the evidence.
• Never include sensitive data in evidence (API keys, credentials, PII). Redact before embedding.
• Keep the artifact under 200 lines. This is a presentation aid, not documentation.
• Don't capture evidence for items the user plans to demo live — just note "[Live demo]" in the evidence section.
• Screenshots go in docs/show-and-tell/assets/ alongside the artifact.
• If git log shows no commits in the period, check session history, Slack, and Notion before concluding it was a quiet day. Research, design work, and helping teammates are legitimate highlights. But don't stretch nothing into something — a quiet day is fine to say plainly.

Integration Points

Inputs:

• recall-commit → git log with conventional commit messages (structured, parseable)
• AGENT-LEARNINGS.md → team-relevant insights (with Author attribution)
• handoff → session summaries in project diary
• Claude Code session transcripts → non-commit work (research, debugging, design)
• Atlas MCP → team context, Slack activity, what others shipped
• Notion MCP → recently created/edited pages, docs, RFCs

Outputs to:

• docs/show-and-tell/ → persistent archive of demos
• Notion (optional) → team-accessible page
• Team meeting → the human presents, the artifact supports them

Anti-Patterns

• The status report: Listing every commit. Nobody cares about "chore: update lockfile" in a show & tell.
• The essay: Paragraphs of explanation without evidence. Show it working.
• The humble-brag: "Just a small thing but..." — state what it does and why it matters, plainly.
• The apology: "I didn't get much done but..." — if it was a research/planning day, say what you learned. If nothing happened, say that in one sentence.
• The screenshot dump: 8 screenshots with no narrative. Each piece of evidence needs context.