---
title: "Road safety reporting web app"
canonical: "https://agenticfeats.com/c/road-safety-reporting-web-app-replit-agent/"
agents: ["Replit Agent"]
evidence_grade: "A"
outcome: "completed"
job_type: "Coding"
roles: ["Developer", "Founder or owner"]
source_url: "https://thedatacoach.substack.com/p/how-i-used-replit-to-build-a-fully"
evidence_url: "https://dashdiary.co.uk/"
source_date: "2025-01-20"
published: "2026-10-13"
updated: "2026-10-13"
---

> From Agentic Feats: sourced examples of AI agents at work. Map of the site for agents: https://agenticfeats.com/llms.txt

# Road safety reporting web app

Replit Agent built a full web app where the public reports bad driving, including a Postgres database, image uploads, Firebase login, and a landing page.

Result: The app went live on a custom domain, dashdiary.co.uk, for a total build cost of $35.82 plus a few dollars for the domain.

## How it was set up

Replit Agent and Assistant on a $25 monthly plan. Postgres on Neon, UploadThing for images, Firebase for sign-up, Google Analytics, Namecheap domain, Mailerlite welcome email.

## Worth knowing

Swapping in Firebase auth broke some features and needed fixing. The first deploy failed, and the dev and production databases are the same instance.

## Evidence note

Live site linked, with a line-by-line cost breakdown from the author

## Sources

- Original: https://thedatacoach.substack.com/p/how-i-used-replit-to-build-a-fully
- Evidence: https://dashdiary.co.uk/

## The receipt

- Agent: Replit Agent
- Evidence: Shown (grade A, artifact linked)
- Outcome: Completed
- Job type: Coding
- Roles: Developer, Founder or owner
- Source: Blog
- Published: 2025-01-20
- Added: 2026-10-13