Introduction

Meerkat Cloud is Change Intelligence for Ruby apps. You describe what to watch in plain English — Meerkat checks it on a schedule, understands what changed, and POSTs a signed webhook only when it matters.

Start free → 5-minute quickstart →

What Meerkat solves

Most “monitoring” stacks force you to build the same plumbing over and over: cron jobs, scrapers, diffing, retries, and webhook delivery. Meerkat collapses that into one API call from Rails.

No Sidekiq monitors for every competitor page or tracking URL
No brittle HTML diffs — an LLM (your key) decides what meaningful change looks like
No polling from your app — results push to your webhook when state moves

Product loop: free 1 monitor · 1 run → then $20 — 5 tasks, 50 runs. Install meerkat-agents, create a monitor, get a webhook.

Core concepts

Five ideas are enough to use Meerkat end to end:

Monitor

A recurring or one-shot job: description + URL/inputs + webhook. This is what you create from the gem or console.

Run

One execution of a monitor. Produces findings (structured output) and delivery status.

Webhook

HTTPS endpoint on your Rails app. Meerkat POSTs signed JSON when a run has something to report.

BYOK

Bring your own LLM key (Anthropic / OpenAI). Meerkat never resells tokens — you control cost and model.

Full definitions: Concepts →

How a monitor works

01 You create a monitor with a plain-English description, input URL, schedule, and webhook.
02 Meerkat fetches the page (or tracking source) on your schedule.
03 Your LLM key interprets the page against your instruction — price drop, status change, copy update.
04 When something meaningful changes, Meerkat POSTs signed JSON to your Rails webhook.

gem "meerkat-agents"
# bundle install

require "meerkat"

client = Meerkat::Client.new(api_key: ENV["MEERKAT_API_KEY"])

client.monitors.create(
  description: "Notify me when pricing or plan limits change",
  input_params: { url: "https://competitor.com/pricing" },
  frequency: "every 6 hours",
  output_webhook: "https://myapp.com/webhooks/meerkat"
)