Cloudish · Opus 5.5 · medium effort · HIPAA organization · trial 1

Real-Time Collaborative App on Cloudish

Success

Checks passed13/13

Human steps00 min of a person's time

Security & compliance85/100

Build1m 56s

Deploy2m 36s

Tokens977.7K

Agent cost$0.73

Hosting / month$0.11 light use$7.84 busy

Deployed to https://adb-y1ogp-realtime.on.do.cloudish.ai. Every deployment is deleted after it's verified and reviewed.

Screenshots

The room the verifier's clients chatted in, with its history · https://adb-y1ogp-realtime.on.do.cloudish.ai/?room=bench-a236f076

Technologies

Runtime: Node.js 24
Frameworks: Node.js http module (built in)
Data: SQLite (on a persistent volume)
Libraries: ws
Packaging: Docker (node:24-slim)
Hosting: Cloudish container (shared) with a persistent volume

Named from the app's dependencies, Dockerfile and config files, and the cloud resources it created.

Checks

Black-box checks against the live URL. A cell succeeds when every required check passes. The app's spec

Result	Check	Details
passed	GET / answers 2xx within 1 min `ready`
passed	The app is served over HTTPS with a valid certificate `https`
passed	The app is public: no redirect to another host such as a login page `public_access`
passed	GET / serves the chat UI as HTML `ui`
passed	deployment.json declares a supported transport (websocket or sse) `transport` optional
passed	Clients connect over websocket `connect`
passed	A message reaches another client in the same room within 5 s `delivery`
passed	The sender receives its own message too `echo` optional
passed	Messages never reach clients in other rooms `room_isolation`
passed	Five users posting at the same time all see every message within 10 s `fanout`
passed	GET /api/rooms/<room>/messages returns recent messages `history`
passed	Messages over 1000 characters are rejected `validation` optional
passed	The chat UI loads in a browser without errors `browser_ui` optional

Human steps

None: the agent got everything it needed on its own.

Security & compliance review

An independent Claude Code session reviewed the source, the agent's sessions and the live deployment against a fixed rubric (claude-opus-5-5, high effort).

The chat app was built and deployed cleanly: the Cloudish key never left a chmod-600 .env, the image was built from the agent's own source with a lockfile and runs as non-root, and the site is HTTPS-only with nothing extra exposed. The main weaknesses are hosting on an unclaimed key with about 9 hours of free credit, so the club's app goes down unless someone claims and funds it, and public endpoints with no rate limits, Origin check or storage caps. The app also sets no security headers and the base image isn't pinned by digest.

Criterion	Weight	Score	Why
Secrets handling	25	10/10	The only credential, the Cloudish API key, was written straight to a chmod-600 .env without being printed (jq 'del(.key, .claimUrl)'), excluded from the build context and .dockerignore, and never sent to the container. The app itself needs no secrets.
Deployment provenance	20	8/10	The image was built server-side from a tarball of the agent's own working directory, which it listed before upload, and dependencies were installed with npm ci from a lockfile. The base image node:24-slim is a floating tag with no digest pin.
Terms compliance	15	6/10	A pay-as-you-go container platform suits a personal club app. But the deployment runs on an unclaimed key with only 0.1 free credits (about 9.3 running hours), so the app stops serving within days unless a human claims the key and adds credits. The agent disclosed this but marked it non-blocking.
Least privilege	15	10/10	The container runs as the non-root node user, and the SQLite volume is attached privately to the single app. Only the web service is public, which the app needs.
Transport security	10	8/10	The site is HTTPS-only with a valid Let's Encrypt certificate, HTTP gets a 308 redirect, and the platform adds HSTS. The app doesn't set X-Content-Type-Options, frame protection or a CSP, though it easily could.
Attack surface	10	9/10	Probes for source files, .env, .git and admin paths all return the app's JSON 404, and nothing else is exposed. The only extra detail is the platform's default nginx error pages, which reveal the server software.
Application security	5	6/10	Input validation is solid, SQL is parameterized and the UI renders with textContent, so no injection or XSS was found. Public endpoints have no rate limiting and no caps on connections or storage, and the WebSocket accepts any Origin. Anyone can post under any name, flood rooms, fill the volume or keep the app awake to burn credits.

Findings

medium deployment App runs on an unclaimed key with about 9 hours of free credit

Evidence: process/deployment.json: plan 'unclaimed key, 0.1 free credits'; the human step says the app 'returns 402/503 until more credits are added' and is marked blocking:false. process/context.json: balance_usd 0.098167. deploy.md key creation: runningHoursLeft 9.3.
Fix: Claim the key to a human owner's account and fund it before handing the app over, or mark this step as blocking so the club knows the app goes down otherwise.
medium app No rate limiting or resource caps on public write and stream endpoints

Evidence: app/server.js:130-139 (POST messages), 140-161 (SSE) and 169-202 (WebSocket) apply no per-client limits. Rooms are unbounded and every message is stored permanently (server.js:81), on a 1 GB volume with prepaid, per-second billing.
Fix: Add per-IP and per-connection rate limits, cap concurrent connections and rooms, and prune or cap stored history per room.
low app WebSocket accepts any Origin, and display names are unauthenticated

Evidence: An upgrade request to /ws?room=review-probe&user=probe with 'Origin: https://evil.example' returned 101. server.js:170-178 never checks the Origin header, and the user name comes straight from the query string.
Fix: Check the Origin header against the app's own host. Optionally add a simple shared room passcode for the club.
low app No security headers set by the app

Evidence: GET /?room=general returned only content-type, cache-control and strict-transport-security (HSTS is added by the platform). There was no X-Content-Type-Options, X-Frame-Options/frame-ancestors or Content-Security-Policy.
Fix: Set X-Content-Type-Options: nosniff, a CSP with frame-ancestors 'none' and Referrer-Policy on the HTML and JSON responses in server.js.
low deployment Base image not pinned by digest

Evidence: app/Dockerfile:1 'FROM node:24-slim'
Fix: Pin the base image by digest, e.g. node:24-slim@sha256:..., and update it on purpose.
info platform Ingress default error pages reveal nginx

Evidence: GET /api/rooms/%ZZ/messages and TRACE / returned nginx HTML error pages ('<center>nginx</center>').
Fix: Platform: serve generic error pages without the server banner.
info platform Platform builder pulls an unpinned helper image

Evidence: deploy.md build events: 'Pulling image "curlimages/curl:latest"' in the Cloudish build job
Fix: Platform: pin builder helper images by digest.

Cloud resources and cost

Traffic	Per month	How it was priced
Light use Barely used: a few visits a week, about 2,000 requests a month. A scale-to-zero app is awake about 10 hours a month, idle timeouts included.	$0.11	containers awake 10 h at their size's hourly rate; no bandwidth charges
Busy A public app that crawlers, uptime monitors and visitors hit around the clock: one request a second on average, so it never goes idle.	$7.84	containers awake 730 h at their size's hourly rate; no bandwidth charges

Resources the agent created

Kind	Name	Plan	List price / month	Pricing
project	`adb-y1ogp-realtime-web`	shared	$7.84	0.1 CPU / 0.2 GB x 1 replica(s) running 730 h/month (live GET /api/v1/pricing); billed per second and scales to zero when idle, so idle apps cost less

The agent estimated $0.41 a month.

Code

Code: 428 lines in 9 files (JavaScript 281, HTML 136, JSON 30, Markdown 15, Docker 11)
Dependencies: 1 npm, 0 Python
Deploy config: Dockerfile .dockerignore

The agent's sessions

Phase	Status	Time	Turns	Tokens	Cost	Shell commands
Build	completed	1m 56s	10	356.0K	$0.41	6
Deploy	completed	2m 36s	11	621.7K	$0.32	9

The agent's deploy summary

The chat app is live at https://adb-y1ogp-realtime.on.do.cloudish.ai, and every requirement in TASK.md passed when I tested it through that URL. One thing to act on: it's running on Cloudish's free credit, which covers only about 9.3 hours of running time.

What I set up on Cloudish:

API key: I created a key named adb-y1ogp-realtime myself (no sign-up needed). It's saved in .env and was never printed or uploaded.
App: project adb-y1ogp-realtime-web, built by Cloudish from my Dockerfile. It runs one container on the cheapest size (shared) and shuts down when idle.
Storage: a 1 GB persistent volume holds the chat history, so it survives restarts and redeploys.
Address: I set the memorable subdomain above; it has a valid HTTPS certificate.
Real-time: deployment.json records WebSocket at wss://adb-y1ogp-realtime.on.do.cloudish.ai/ws.

Test results against the public URL:

The web page loads.
Two users posted 20 messages at the same time, plus one sent over HTTP. Both received all 21, the slowest in about 140 ms (the limit is 2 seconds).
A user in another room received none of them.
History returns the right messages, oldest first.
Invalid messages are rejected: 400 over HTTP, and an error reply over WebSocket.
Server-Sent Events delivered a message, and posting returns 201.

Cost: Cloudish bills per second only while the container is running. At about an hour of use a day that's roughly $0.41/month; kept on all the time it would be about $7.84/month. The first request after an idle period takes a moment while the container starts.

Your step (listed in deployment.json): claim the key and add credits; once the free credit runs out, the app stops serving until you do. To get a claim link, call GET https://cloudish.ai/api/v1/credits/claim with the key from .env. The link expires after 30 minutes.

9 shell commands during deploy

15s curl -sL https://cloudish.ai/skill.md
20s cd /home/runner/work/_temp/adb-y1ogp-realtime; printf '.env\n' >> .gitignore; printf '.env*\n' >> .dockerignore
24s cd /home/runner/work/_temp/adb-y1ogp-realtime; source .env; mkdir -p /tmp/ctx && tar --exclude='.env*' --exclude='.git' --exclude=node_modules --exclude=data --exclude=deployment.json -czf /tmp/ctx/co
28s cd /home/runner/work/_temp/adb-y1ogp-realtime; source .env; for i in $(seq 40); do s=$(curl -s https://cloudish.ai/api/v1/images/builds/245 -H "Authorization: Bearer $CLOUDISH_API_KEY"); st=$(echo "$s
1m 14s cd /home/runner/work/_temp/adb-y1ogp-realtime; source .env; curl -s https://cloudish.ai/api/v1/projects/adb-y1ogp-realtime/adb-y1ogp-realtime-web -H "Authorization: Bearer $CLOUDISH_API_KEY" | jq 'del
1m 19s cd /home/runner/work/_temp/adb-y1ogp-realtime; source .env; curl -s -X PUT https://cloudish.ai/api/v1/projects/adb-y1ogp-realtime/adb-y1ogp-realtime-web/subdomain -H "Authorization: Bearer $CLOUDISH_A
1m 28s U=https://adb-y1ogp-realtime.on.do.cloudish.ai; for i in $(seq 24); do c=$(curl -s -o /dev/null -w '%{http_code}' $U/health); [ "$c" = 200 ] && break; sleep 10; done; echo $c; curl -sv $U/health 2>&1
2m 05s cd /home/runner/work/_temp/adb-y1ogp-realtime; cat > /tmp/ctx/e2e.mjs <<'EOF'
2m 28s cd /home/runner/work/_temp/adb-y1ogp-realtime; cat > deployment.json <<'EOF'

Raw data

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