17th Street LabsStart a conversation

Senior leverage,
at the fault line.

We enter where capability, uncertainty, and consequence meet. Every engagement is led hands-on by senior practitioners.

01
BUILD

AI product engineering

Production architecture for agentic applications, retrieval, tool use, model routing, durable workflows, and the integrations that make them useful.

From impressive prototype to dependable product.
02
ATTACK / DEFEND

AI security

Threat modeling, adversarial testing, red teaming, permissions, control design, and operational defenses for systems that reason and act.

Know how the system breaks before an attacker does.
03
PROVE

Evals & reliability

Curated datasets, scenario evaluations, deterministic and LLM judges, failure taxonomies, regression gates, and measurable improvement loops.

Replace launch anxiety with decision-quality evidence.
04
LEAD

Technical advisory

Architecture direction, build-vs-buy decisions, platform strategy, executive counsel, and hands-on enablement for senior teams.

Move faster without mortgaging the system.

Need a precise engagement?

Tell us what is stuck
NEW ENGAGEMENT

What hard problem are you carrying?

Give us the useful version: what you are building, what is uncertain, and what happens if it fails.

Opens your email app with a draft for you to send.