Agency engineering

Our Developments

We use the best AI tools in our work and build our own open-source solutions that accelerate analytics, reporting, and decision-making in marketing.

Stack
Claude
Codex
GA4 API
GitHub

What we
use daily

Our team integrates modern AI models into everyday processes — from SEO audits and content creation to ad campaign analysis and reporting automation.

Claude (Anthropic)
Our main AI assistant. We use it for deep GA4 data analysis, building marketing strategies, writing SEO content, competitor research, and automating client reporting.
Codex (OpenAI)
AI agent for development and automation. Helps write data-processing scripts, integrate with APIs (GA4, Search Console, ad platforms), build dashboards, and run page-level mass optimization.
ChatGPT
Supporting tool for copywriting, ad creative ideation, translation between language versions of websites, and generating meta-tag variants.
Custom skills and prompts
Over 20 specialized prompts and skills tailored to typical agency tasks: SEO audits, ROAS forecasting, Google Ads campaign analysis, meta-tag optimization.

Our Developments

Our own tools for marketing analytics and optimization. Free on GitHub — use, fork, contribute.

Claude Skill MIT

Spilno GA4 ROAS Corridor Analysis

A skill for Claude that automates Google Ads revenue forecasting using GA4 data. The “ROAS corridor fluctuation” method takes actual six-month ROAS variability and builds a revenue uplift forecast across three scenarios (pessimistic, baseline, optimistic) for budget increases.

  • Automatic GA4 integration
  • 6-month ROAS variability analysis
  • 3 scenarios: +€500 / +€1k / +€2k budget
  • Ready-to-share branded report
  • MIT license, fully customizable
Free Tool Web

UTM Builder — UTM Link Generator

Online tool for generating UTM-tagged links with ready-made templates for Google Ads, Meta, TikTok, Email, and other channels. One-click copy.

  • 8 channels with auto-filled UTM parameters
  • Dynamic tracking variables for Google Ads, Meta Ads, TikTok Ads
  • Live link preview as you type
  • Copy button built into the result field
Free Tool Web

Advertising ROI Calculator

Online advertising profitability calculator: enter ad spend, revenue, number of purchases, and profit margin (or markup) to instantly get ROI, ROAS, average order value, customer acquisition cost (CAC), and profit from ads.

  • ROI based on margin profit, not turnover
  • Automatic markup-to-margin conversion
  • Break-even point: minimum ROAS for your margin
  • Runs entirely in the browser — no data is sent anywhere
Claude Code Case study

RobotsCheck — Google Merchant Product Coverage in Google Ads

An internal tool on the RobotsCheck platform, built together with Claude Code: it cross-checks the Google Merchant Center feed against Google Ads campaigns and lists products that passed moderation but received no ad coverage at all.

  • Automatic reconciliation of Merchant Content API and Google Ads
  • List of products with no ad coverage
  • Coverage metric in % (example: 83%)
  • Dashboard + PDF digest for the client
  • Saves weeks of manual product-by-product checking
Coming soon

More developments ahead

We constantly build new tools for agencies and clients. Follow updates on GitHub.

Let’s talk about your project

Marketing that pays for itself

Tell us about your project — we’ll show how we’d apply these tools to grow your business and propose a tailored strategy.