Buildoto
Technical details

Freelance AI Agent developer, at a fixed price

AI agents that execute your repetitive tasks, connect your tools and free up your teams. Measurable gains (time, errors, follow-ups), which I deploy in your environment, at a fixed price from €440 excl. tax, no subscription. You own them.

SM

Sébastien Mignot

Fixed price · indicative base ~€60/h

app.exemple.com
Monthly revenue
12 480 €
+18%
Signed contracts
34
+6
Conversion
24,1%
+2,3pt
Signatures / week
Acme SASSigned4 900 €
NorthwindIn progress8 200 €
GlobexSigned3 600 €

The problem

What slows you down, and what we change

Today

  • Hours of repetitive work (sorting, follow-ups, data entry) piling up every week: salaries absorbed by tasks with no value.
  • Your tools don't talk to each other: copy-pasting between applications, errors, information lost.
  • Finding a developer who really masters AI agents in production is a risky bet.

With Buildoto

  • The agent handles them on its own, 24/7, without errors: your teams' time is given back to valuable tasks. Sized at the audit, at a fixed price.
  • The agent connects your tools and moves data automatically: fewer errors, less re-entry, processes that advance on their own.
  • I design, code and deploy single-handedly, as on beforbuild.com: one point of contact, proof in production, and a 6-month warranty in the package.

Freelance AI Agent developer, I design and deploy intelligent agents that automate your business processes. Stack already in production on beforbuild.com, delivered at a firm fixed price on a signed scope, from €440 excl. tax.

What I build:

  • Document RAG agent: answers from your documents, contracts, procedures, with the source.
  • Autonomous business agents: qualify cases, trigger follow-ups, extract data, make decisions according to your rules.
  • Workflow automation: connect your tools (CRM, ERP, messaging) and move data without copy-pasting.
  • Voice agent: answers your customers 24/7 by phone, escalates to a human when needed.
  • Monitoring and dashboards: React/shadcn interface to run your agents, see the logs, track performance.

The stack: Cloudflare Workers (edge API, orchestration), Supabase (PostgreSQL database, auth, multi-tenant RLS), Mistral/OpenAI (LLM), LangChain or custom code for the agent logic. All optimized to run at minimal cost.

Observed orders of magnitude: a case-qualification agent processes 500 cases in minutes where a person spends 2 days. A RAG agent saves 15 to 30 minutes of searching per question asked. The monthly operating cost of an agent in production is around 5 to 30 € depending on the volume of LLM calls.

The packaged offer, at a fixed price

Fixed price on a signed scope: a price known in advance, a production delivery documented and take-over-ready for your team.

  • Simple automation from €440 excl. tax: one workflow, a few steps, connected to one or two tools. Delivered in 2 to 4 weeks.
  • Complex business agent from €1,760 excl. tax: multi-step, decisions, monitoring, control interface. Delivered in 4 to 6 weeks.

We start with a free 30-minute audit: your need, what you have, and a fixed-price quote within 48 h.

Proof in production

AI agents in production on beforbuild.com

beForBuild.com (my B2B SaaS) runs several business AI agents on a secure multi-tenant database: automatic qualification, follow-ups, summaries. This is the proven base I adapt to your processes.

Visit beforbuild.com
24/7
execution without intervention
Agents
specialized per business
UI
monitoring included

Method

Audit → Build → Production

  1. 01

    Free audit · 30 min

    I embed in your context: mapping of your processes, your subscriptions and your vendor dependencies. No commitment.

  2. 02

    Fixed-price quote

    Scope priced on portable building blocks: feature to deploy or subscription replacement. Price and scope signed within 48 h.

  3. 03

    Deployment & handover

    I build it, deploy it in your environment and document it. You own the code and keep control of your data.

Fixed price

Complex business agent

€1,760 excl. VAT

+ customization quoted on your spec · fixed price signed before we start

Fixed price on a defined scope · indicative base ~€60/h

Book

Your free audit · 30 min

Pick a slot. We audit your case and you leave with a fixed-price quote.

FAQ

Frequently asked questions

SM

Who I am

A single point of contact, from audit to handover

I design, develop and run my own features in production: BeForBuild.com, the B2B SaaS I manage single-handedly, is the proof. These proven building blocks, I deploy them in your environment, at a fixed price, and you own them.

You talk directly to the person who delivers: no subcontracting, no agency layer. The one who designs is the one who codes, deploys and hands over.

Founder of BeForBuild.comA single point of contactFrom quote to ownership handover

Stack & intégrations

Cloudflare
Supabase
React
shadcn/ui
TypeScript
Mistral
Stripe
Documenso

Let's talk about your project

30 minutes to scope your need and quote the fixed price, no subscription. 6-month guarantee included. Reply within 24h.

Book my free audit · 30 min