SERVICE · 05

Schema-Driven Dev

Contract first. Codegen everywhere. Versioned API surface across 4 languages.

WHAT YOU GET

One source of truth

OpenAPI / Zod / proto schema in your monorepo. All clients regenerate on every change.

Codegen for 4 langs

TypeScript, Python, Go, Rust clients + servers. No hand-written types.

Versioned contracts

Additive-only by default. Breaking changes flagged in CI; deprecation policy enforced.

02 · Reference architecture

What we actually ship.

Every system we build follows this shape. Client at the edge, tools in a sandbox, traces everywhere, evaluators gating output. No black boxes, no "it works on my machine."

EDGE
Client
web · mobile · API
Gateway
auth · rate-limit · PII redact
ORCHESTRATION
Orchestrator
planner · router · memory
Durable · exactly-once
AGENTS & TOOLS
Retrieval
hybrid · rerank · cite
Tool calls
sandboxed · timeboxed
Evaluator
gates · rubrics · LLM-judge
DATA & TRUST
Vector + BM25
tenant-isolated
Traces / logs
OTel · replayable
Signed output
auditable · rollback
04 · Run

Watch an agent do the job.

Three real production scenarios, replayed at observed latency. Every box is a span; every span has tokens, cost, and an eval gate. This is what shows up in your traces, not a marketing animation.

POST/api/v1/agent/runTrade desk submits a €4.2M block trade. Agent must reject, approve, or flag in <3s.
trace · compliancespan_id 7c1f…
orchestrator.run0ms
PLANorchestrator.planorchestrator · 80ms · 184 tok · $0.0014
Plan rationale

Pretrade review requires: applicable-rules retrieval, market-data lookup, position-check, and a deterministic evaluator gate.

Subtasks
retrievaltool.market_datatool.position_checkevaluator
0ms/1.82s
LATENCY0msbudget 3.00s
TOKENS0in + out
COST$0.0000budget $0.025
EVAL GATEdeterministic + LLM-judge
APPROVED · 1 flag
Trade clears 11 of 12 rules. Rule 23.2 (book concentration) flagged for desk-head sign-off.
latency2.41scost$0.014tokens1,827evals12/12
09 · STACK

Modern tools, composed cleanly.

Codegen
OpenAPI, Smithy, Zod
10 · FAQ

FAQ · Schema-Driven Dev

Fixed-price, scoped to two weeks. We can share a rate sheet on request — the goal is that you leave with something concrete (architecture + spike) regardless of whether you continue with us.

Additive-only by default, with a `version` field on every envelope and a deprecation policy that's checked in CI. Breaking changes go through a parallel-version window.

START

Ship the first system.

Fixed-price discovery in 2 weeks. You leave with an architecture, a working spike, and a build plan.