launch-demo

A procedure for launching the KB Platform demo, a local Docker Compose application with a web interface at http://localhost:3000. It brings up the services, loads sample data, checks health, and opens the app.

In plain words
What is it for?
Use it to run, start, launch, or smoke-check the demo locally, including rebuilding changed images, seeding data, and confirming the web app is available.
Why use it?
It removes the need to remember the correct compose file, startup sequence, demo data setup, and verification steps.

Skill for Claude CodeCodex

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 skills/syntax753/synkb/launch-demo
Any agent
npx skills add Syntax753/synkb --skill launch-demo
Clone the repo
git clone --depth 1 https://github.com/Syntax753/synkb

Made for: Claude Code, Codex.

Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,176 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 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 $0.00058 $0.02176
Opus 5 $0.00029 $0.01088
Sonnet 5 $0.00012 $0.00435
Haiku 4.5 $0.00006 $0.00218

Measured 2d ago against content hash c93fc8cca51d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade C, and why

launch-demo scanned grade C with 2 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 2d ago.

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.

Downloads and executes remote codehighSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

curl -fsS http://localhost:8086/library/items | python -c "import sys,json;print(len(json.load(sys.stdin)['items']))"

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -fsS http://localhost:8080/healthz # -> {"status":"ok","service":"core-api"}
.claude/skills/launch-demo/SKILL.md · 160 lines

How it starts

The opening of the file, as written. The whole thing — 160 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Launch the KB Platform demo

The demo is a Docker Compose stack (docker-compose.demo.yaml, 16 services) fronted by a Next.js web app on http://localhost:3000. Everything is driven through the Makefile. Never call docker compose without -f docker-compose.demo.yaml — the compose file is non-default, so a bare docker compose finds no services.

One command

make demo

make demo is the idempotent "make me demo-ready" target. It:

  1. pre-cleans stopped containers from previous runs,
  2. brings the stack up if it's down (docker compose up -d --build, rebuilds only changed images),
  3. (re-)seeds the demo data — 50 docs, 8 templates, 5 drafts, ~80 audit events,
  4. prints the URL and what to try.

Safe to re-run between demos without losing state. On success it prints:

Web:    http://localhost:3000  (logged in as demo user — all groups)
Script: demo/demo-script.md  (14-step printable cue card)

Build time: a cold image cache (first-ever run, or after make reset) can take anywhere from a few minutes to ~an hour — the mcp-server / torch-pulling services dominate. A warm stack finishes in well under a minute. On Windows, prefer plain build output for backgrounded builds: docker compose -f docker-compose.demo.yaml build --progress=plain (BuildKit TTY output is lossy when redirected).

Sub-option: run on your personal Claude account — no API key (SUPPLY_PROXY=1, WP-31)

To make the Chatbot + draft generation work without an ANTHROPIC_API_KEY, route the demo's LLM calls through your own Claude subscription via the opt-in claude-proxy:

make demo SUPPLY_PROXY=1

It reads your Claude OAuth token once on the host (~/.claude/.credentials.json; never mounted into a container), starts an in-network proxy (claude-proxy:3456) that forwards to api.anthropic.com under that token, and fails the demo loudly if the token is rejected (with a "validate your token … or set ANTHROPIC_API_KEY" message). A real ANTHROPIC_API_KEY (env or .env) always wins and skips the proxy.

Read the full file on GitHub · 160 lines

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. 2d ago First seen · 160 lines · 58 tokens per session scan C c93fc8cca51d

Subscribe to this mod's changes

launch-demo is a skill published in the GitHub repository Syntax753/synkb (0 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 58 tokens to every session and 2,176 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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