SaaS (Screenshot As A Service)

Give your agent the ability to instantly take screenshots of any website with just the URL. Cloud-based so your agent has to perform no work. Free forever, open source.

Security Scan

The skill is internally consistent with its stated purpose (calling a remote screenshot API), but it relies on an external, unverified service which will receive any URLs and options you send — posing privacy and data-exposure risk that you should consider before use.

Purpose & Capability

Name/description match the runtime instructions: the SKILL.md documents a cloud screenshot API (snap.llm.kaveenk.com) and shows how to register and call it. The skill requests no local binaries, env vars, or unusual OS access — nothing appears extraneous to taking remote screenshots.

Instruction Scope

Instructions tell the agent to register and POST URLs (and optional headers/cookies) to the remote API and to store the returned API key. This is within the stated purpose, but calling the remote API inevitably transmits the target URL (and potentially page content as the service fetches it). The options allow passing custom headers and cookies, which could be used to send sensitive or authenticated data if the agent or user provides them.

Install Mechanism

No install spec and no code files — instruction-only skill. That minimizes local code execution risk. The tradeoff is that all behavior depends on the external service (no local code to audit).

Credentials

The skill declares no required environment variables, credentials, or config paths. It asks the user/agent to obtain an API key from the remote service via registration; that is proportional to using a hosted API.

Persistence & Privilege

The skill is not force-included (always:false) and uses normal autonomous-invocation settings. It does not request elevated agent/system privileges or modify other skills' configs.

Assessment

This skill is coherent and does what it says: it sends URLs to a remote screenshot API and returns images. However, the service domain (snap.llm.kaveenk.com) and source are unverified and there is no included code to audit. Before installing or using it: 1) Treat any API key as a secret; store it securely. 2) Avoid sending URLs that contain private tokens or that require authentication; do not include real authentication cookies/headers unless you trust the operator. 3) Understand that any page fetched by the service (including content behind the URL) will be visible to the service operator — don't use it on sensitive internal sites or PII. 4) If you require stronger assurances, prefer self-hosting an auditable open-source screenshot service (the skill claims to be open-source) or verify the operator, privacy policy, and TLS certificate for the offered domain. 5) Confirm acceptable network egress policies for your environment (the skill makes outbound calls to an external host).

SnapService — Screenshot as a Service

Free screenshot API at https://snap.llm.kaveenk.com. POST a URL, get a PNG/JPEG back. Powered by headless Chromium.

Quick Start (2 steps)

Step 1: Register for an API key

curl -s -X POST https://snap.llm.kaveenk.com/api/register \
  -H "Content-Type: application/json" \
  -d '{"name":"my-agent"}'

Response:

{"key":"snap_abc123...","name":"my-agent","limits":{"per_minute":2,"per_day":200}}

IMPORTANT: Store key securely. It cannot be recovered.

Each IP address can only register one API key.

Step 2: Take screenshots

curl -s -X POST https://snap.llm.kaveenk.com/api/screenshot \
  -H "Authorization: Bearer snap_yourkey" \
  -H "Content-Type: application/json" \
  -d '{"url":"https://example.com"}' \
  -o screenshot.png

That's it. Two steps.

Screenshot Options

All options go in the POST body alongside url:

Option	Type	Default	Description
url	string	required	URL to screenshot
format	string	"png"	"png" or "jpeg"
full_page	boolean	false	Capture entire scrollable page
width	integer	1280	Viewport width (pixels)
height	integer	720	Viewport height (pixels)
dark_mode	boolean	false	Emulate dark color scheme
selector	string	—	CSS selector to screenshot specific element
wait_ms	integer	0	Extra wait time after page load (max 10000)
scale	number	1	Device scale factor (1-3, for retina)
cookies	array	—	Array of {name, value, domain} objects
headers	object	—	Custom HTTP headers
block_ads	boolean	false	Block common ad/tracker domains

Rate Limits

• 2 screenshots per minute per key
• 200 screenshots per day per key
• 1 API key per IP address
• Max page height: 16384px (full-page mode)
• Max screenshot size: 10MB

Response

• 200: PNG or JPEG image binary
• 400: Invalid request (missing URL, invalid options)
• 401: Missing or invalid API key
• 409: IP already has an API key (on registration)
• 429: Rate limit exceeded
• 500: Internal error

Example with all options

curl -s -X POST https://snap.llm.kaveenk.com/api/screenshot \
  -H "Authorization: Bearer snap_yourkey" \
  -H "Content-Type: application/json" \
  -d '{
    "url": "https://example.com",
    "format": "jpeg",
    "full_page": true,
    "width": 1920,
    "height": 1080,
    "dark_mode": true,
    "wait_ms": 2000,
    "block_ads": true
  }' \
  -o screenshot.jpg

Python example

import requests

API = "https://snap.llm.kaveenk.com"

# Register (one-time)
r = requests.post(f"{API}/api/register", json={"name": "my-agent"})
key = r.json()["key"]

# Screenshot
r = requests.post(f"{API}/api/screenshot",
    headers={"Authorization": f"Bearer {key}"},
    json={"url": "https://example.com", "full_page": True})
with open("shot.png", "wb") as f:
    f.write(r.content)