Case study · Applied AI

How I built a global agency's first AI agent

A tool to generate image alt-text, simple enough for anyone to use. From choosing the task to the decision pipeline, all the way to results that freed up dozens of hours for the team.

Role · UX WriterBuilt soloStatus · in production
The challenge

Generating alt-text was manual, slow and error-prone. High volume, strict rules and little creative room. A technical, repetitive job that ate into the UX Writing team's time. The ideal scenario for rules-based automation.

The results, in numbers

Less time on mechanical tasks, more focus on what matters.

+208%

UX Writing team productivity

66%

reduction in time spent creating alt text

160h

saved in just 1 month of alt-text tasks

The process

And in practice, how does it work?

01

I chose the right task

I picked a task with low creative need, high technical demand, repetitive and with room for human error due to volume. In other words, perfect for rules-based automation.

02

I built it with AI's help

I used an enterprise AI assistant to help me build the agent, explaining in detail exactly what I wanted: an alt-text generator.

03

I applied the content rules

Describe only what is visible in the image. Use relevant details such as color, angle and scenario. Respect character limits. Recommended model: [angle/part] of the [brand model version], [color], [feature/part], [visible logos/text], [scenario].

04

I designed the decision pipeline

It receives visual and contextual data (brand, model, angle, color, feature, scenario). Generates the ALT ordered by relevance, trimmed to 125 characters. Generates an informative, non-redundant TITLE. Generates the IMAGE NAME with technical normalization. Delivers everything in a single, standardized format.

05

I fed it approved examples

A robust set of real, approved examples from automotive brands defines the style and serves as reference for the desired behavior.

06

I tested, tested and tested again

I built it in one night and started using it the next day. I shared it with the team, who embraced the project right away. We kept improving it as needed.

The agent in action

From a screenshot to a standardized alt-text

generate the alts for this image

Agent · Alt-text generator

Image name

compact-suv-white-special-edition

Title

White compact SUV in focus

Alt Text

White compact SUV with a black roof over a cassette-tape illustration, with special edition logos and text on a red background.

1

Screenshot of the image(s)

2

Generation prompt for the page's alts

3

A UX Writing professional reviews it

AI speeds up the mechanical part, but the final word always belongs to a person. The agent delivers a standardized draft and the team reviews it before publishing.

Results

Production time, before and after

Number of altsWithout the agentWith the agent
228h2h
5520h8h
7328h10h

A saving of 160 hours per month that the team reinvested in higher-value content.