API Design & Integrations.
REST and GraphQL APIs other engineers actually enjoy calling — versioned, OpenAPI-documented, and monitored, with partner SDKs and webhooks that just work. We design the contract first, ship the SDKs and docs alongside it, and monitor every endpoint in production.
What shows up in your repo.
Agent graph
Typed nodes, tool schemas, retry and fallback policy. Versioned like code.
agents/*.ts · dag.yamlEval harness
Golden sets, LLM-as-judge, regression runs on every PR.
evals/*.jsonl · ci.ymlObservability
Traces, token costs, hallucination rates, drift alarms. Wired to your stack.
otel · datadog · honeycombRunbook
What to do when a tool 500s, when latency spikes, when eval red-lines.
docs/runbook.mdIf we can't measure it, we don't ship it.
Every system lands with a golden dataset, LLM-as-judge graders, PII and jailbreak guards, and nightly regression runs in CI. You get a pass/fail number on every pull request.
Ten weeks — demos, not decks.
- w 01Discover4 interviews · trace 1 week of the target workflow · define success metric
- w 02Architectagent graph v0 · tool contracts · eval set v0
- w 03–05Ship v1live demo every Friday · first guarded prod use by w05
- w 06–08Hardenload, cost, drift, fallback · SRE review · runbook
- w 09–10Handoffin-house eng shadowing · on-call rotation · retro
- w 11+Operatewe stay on-call, tune prompts, update graders as the world changes
A pricing engine, rebuilt in six weeks.
One representative case. Read the full editorial walkthrough, including the deploy log and latency chart.
Rebuilding a pricing engine in six weeks.
Series C fintech · monolith → 4 services + gateway · 42 TB ledger migrated · zero downtime.
READ THE CASE →Six things finance + eng teams want answered.
Whichever is best for the job — Anthropic, OpenAI, Google, or open-weights on your infra. We write the graph so the model is a swappable dependency.
Only under your DPA and with your key-management. We run on your cloud account unless you explicitly ask us to host.
Eval harness runs nightly and on every PR. If a model update breaks a grader, we freeze and triage before rollout.
Yes — our router speaks the APIs your team already runs: Salesforce, Zendesk, Stripe, Snowflake, internal services. We write typed tool schemas.
A monthly retainer tied to eval runs + on-call. Typically 8–15% of the build fee, reviewed quarterly. No surprise hours.
You do, from day one. Repo is yours. We leave MIT-licensed helper libraries where we can reuse them across clients.