Skip to main content
Custom AI agents

Not another chatbot. An agent that acts inside your tools.

We design and deploy AI agents that read your data, perform actions in your business tools and deliver measurable outcomes — not a demo, but an operational building block integrated into your stack.

Plugged into your APIs and databases

Guardrails and human approval

First prototype in 4 to 6 weeks

A chatbot answers. An agent acts.

The difference isn't conversational — it's operational.

Chatbot — GenericBonjour ! Comment puis-je vous aider ?Peux-tu créer la facture du client X ?Désolé, je ne peux pas accéder à votresystème de facturation. Voici les étapesmanuelles à suivre…Posez votre question…⚠ AUCUNE ACTION EXÉCUTÉE
Chatbot — generic

Provides answers, redirects to documentation, asks you to do the work yourself. Stuck outside your systems.

Agent · Customer OpsCrée la facture du client Acme Corp🔍 CRM.lookup("Acme Corp")📄 invoice.create(items, 4200€)✉ email.send(client, invoice.pdf)✅ Facture INV-2026-0481 crééeet envoyée à contact@acmecorp.com.Voulez-vous archiver le dossier client ?Donnez une instruction…
AI Agent — connected

Queries your databases, calls your APIs, triggers your workflows, and reports back. You get the outcome, not just a reply.

Why an agent?

The limits of today's solutions, and what a real agent actually solves.

Chatbots stay outside your stack

Classic chatbots reply in text but can't reach your CRM, ERP or internal database. Your teams still have to do all the work behind the scenes.

RAG alone isn't enough

Searching through documents is useful, but it doesn't trigger anything. An agent combines retrieval, reasoning and tool calls to go all the way to action.

Vertical platforms are rigid

Off-the-shelf agent SaaS forces their integrations and their model. Your use cases rarely fit the grid — and you pay per seat.

AI without guardrails is unmanageable

An agent that mutates your data without audit or approval is a liability. We define from day one what it can do, with what approval and what traceability.

Observability is missing

Many agent PoCs run blind. We install logs, replays and metrics from the start so you can actually measure ROI.

You stay locked into one model

If you're tied to a single provider, you're exposed the day pricing changes or the model regresses. Our architecture lets you switch.

What you gain with a custom agent

Concrete operational benefits, measurable sprint after sprint.

Automation of high-value tasks

Quotes, lead qualification, level-1 customer responses, record updates: the agent handles the routine and frees your teams for expertise.

Native integration with your stack

Email, calendar, CRM, ERP, product catalog, internal APIs: the agent plugs into the tools you already have, not a vendor's ecosystem.

Control and guardrails

Per-action permissions, human approval on sensitive operations, dry-run before execution, rollback: you stay in control.

Closed or open-source models, your call

Proprietary models (Claude, GPT) for the best of the state of the art, or open models (Mistral, Llama, Hermes) hosted on your infrastructure or in Europe for sovereignty. We combine based on your case.

Full traceability

Every tool call, every response, every decision: all logged, replayable, auditable. Essential for compliance and continuous improvement.

Measurable ROI

We define KPIs during scoping (time saved, auto-resolution rate, conversions) and track them continuously to steer the project.

Our method

Five steps to go from idea to an agent running in production.

1

Use case scoping

We start from a concrete workflow, identify automatable tasks, required data and tools, and success metrics. No AI for AI's sake.

2

Architecture and guardrails

Model choice, tool graph design, permission boundaries, human-in-the-loop checkpoints and traceability. This is the layer that makes the agent trustworthy.

3

Fast prototype

A working agent on a narrow scope in 4 to 6 weeks, plugged into your real data (dry-run by default for sensitive actions).

4

Real-world iteration

Your users put it through its paces. We analyze logs, tune prompts, add tools, sharpen guardrails, build the eval suite.

5

Production and monitoring

Progressive rollout, quality and cost monitoring, drift alerts, and ongoing support to evolve the agent with your needs.

Typical example

A representative case from projects we deliver.

The context

60-person SMB with an 8-person support team. 200 to 300 customer requests per day, 60% of which are recurring (order status, returns, product FAQ, docs).

The trigger

Support spends most of its time copy-pasting replies and digging information from 4 different tools. Average response time exceeds 24h. Sales can't follow up on warm leads anymore.

The solution

An AI agent connected to the CRM, the order back-office and the documentation base. It handles simple requests end-to-end (reply + action) and triages the complex ones for a human.

The outcome

70% of requests handled without human intervention, average response time down to 8 minutes, support team refocused on high-value cases. First ROI hit at month 3.

The stack we use

A balanced mix of closed models (Claude, GPT) and open-source ones (Mistral, Hermes), orchestrated with open building blocks like n8n and OpenClaw.

Proprietary or open-source models · n8n + OpenClaw orchestration · European hosting available

Claude (Anthropic) logo

Claude (Anthropic)

GPT (OpenAI) logo

GPT (OpenAI)

Mistral AI logo

Mistral AI

Hermes · Hugging Face logo

Hermes · Hugging Face

n8n logo

n8n

OpenClaw logo

OpenClaw

Frequently asked questions

Expect 4 to 6 weeks for a first prototype plugged into your data, and 2 to 4 months for a stable production deployment with guardrails and observability. Duration mostly depends on how many tools need to be integrated.

We combine based on your case. Closed models (Claude from Anthropic, GPT from OpenAI) are often state of the art for reasoning and tool-use. Open-source models (Mistral for Europe, Llama, Hermes from Nous Research, Qwen) enable on-premise or European hosting, full privacy and controlled inference costs. Many of our projects use a closed model for the main reasoning loop and an open one for local tasks.

We can host the agent and its data in Europe, anonymize or pseudonymize what goes out to model APIs, and log everything to meet audit requirements. This is scoped into the architecture from day one.

No. The agent sits behind an abstraction layer that lets you switch model or provider without rewriting the logic. You keep the code, the prompts and the data.

Fine-tuning adapts a model to your style. RAG enriches it with your documents. An agent adds the ability to execute actions in your tools. The three combine depending on your need.

Costs split between build (initial development, typically €20k to €60k depending on scope) and run (model calls, hosting, monitoring). We provide a clear cost model from the scoping phase.

We rely on battle-tested open-source building blocks. n8n for declarative workflows and integration with your business tools (CRM, ERP, email, databases). OpenClaw when we want an autonomous self-hosted agent, model-agnostic and privacy-first. MCP (Model Context Protocol) and LangChain/LangGraph for custom development when logic goes beyond a workflow. The choice depends on the level of autonomy and integration required.

Let's discuss your use case

Describe your need and we'll get back to you within 24 to 48h with a first recommendation and a costed scope.

Talk to an expert
Coladia

Coladia is a digital development studio that helps you in your web and mobile projects, from concept to the final app.

COLADIA SARL

32 bd de Strasbourg

75010 Paris - France

Contact page

Coladia - Building apps since 2006. All rights reserved.This site uses cookies to improve your experience.