Stellmedia

AI Agent Development

The difference between an agent that ships and a demo that impresses is the boring half: evaluation harnesses, escalation paths and knowing what the agent must never do.

AI Agent Development

The problem

Pilots fail at evaluation, not at capability

Teams prove an agent can handle a happy path, then discover they have no way to measure regression, no escalation design, and no agreed definition of an unacceptable answer.

We build the evaluation set before the agent, which means every change afterwards has a number attached and the rollback decision is never a debate.

What you actually get

Every engagement ships these. No line items you cannot point at.

Production agent

Retrieval, tools and guardrails wired into your real systems, not a sandbox with a chat box.

Evaluation harness

A scored test set written before the build, run on every change, with regression gates in deployment.

Escalation design

Clear handoff to a human with full context, and explicit refusal behaviour on anything out of scope.

Observability

Transcript review, containment and satisfaction tracked from day one, with a weekly failure readout.

Typical outcomes

0%

Median containment on support workloads

−0%

First-response time on contained conversations

0 weeks

Median build to production, with evals in place

How we run it, week by week

Weeks 1 to 2

Scope and evals

What it handles, what it refuses, and the scored test set that defines acceptable.

Weeks 3 to 6

Build

Retrieval and tool integration against your systems, with guardrails tested against adversarial cases.

Weeks 7 to 8

Shadow mode

The agent drafts, humans send. We measure agreement rate before it gets the keys.

Ongoing

Managed evaluation

Weekly transcript review and eval runs, because model updates change behaviour without asking you.

Stack we work in

Platform-agnostic. We work in whatever you already own and tell you honestly when it is the constraint.

Claude
OpenAI
LangGraph
Pinecone
Postgres
Zendesk & Gorgias
Twilio

Questions buyers ask us

Scope refusal, retrieval grounded in your own documents, an adversarial test set in the eval harness, and a human escalation path for everything it is not confident about.

Start a project

Tell us the numberyou need to move.

Response time
Under 24 hours