Technical guides

Fixes and frameworks for the problems that actually come up building this stuff, not generic advice.

• What an AI voice agent actually costs to build in 2026A realistic cost breakdown for AI voice agents — build cost by tier, the ongoing per-minute and hosting costs nobody quotes upfront, and how retainers compare to a flat day rate.
• Building a HIPAA-compliant Next.js app on VercelVercel only signs a BAA on Enterprise — and that is just the first of several things a HIPAA-ready Next.js architecture needs. Here is the full picture: hosting tiers, encryption, audit logging, RBAC, and subprocessor BAAs.
• How to make Stripe webhooks idempotent (and stop double-charging customers)Stripe retries webhooks, and a naive handler turns those retries into duplicate orders and duplicate charges. Here's the event-ID idempotency pattern, with a Next.js App Router route handler that verifies signatures first.
• Why your Salesforce integration suddenly stops authenticating (OAuth token refresh, done properly)An integration that ran fine for months starts throwing 401s overnight. The cause is almost always refresh token handling — expiry, revocation, rotation, or clock skew. Here's the diagnosis path and the refresh pattern that survives production.
• pgvector vs. Pinecone: how to actually pick a vector databaseThe choice isn't which vector store is better — it's which one fits your scale and your ops model. A practical framework: cost at scale, operational overhead, performance by vector count, and the migration path if you outgrow your first pick.
• How to reduce voice AI agent latencyWhere latency actually accumulates in a voice agent pipeline — STT, LLM, TTS, and network — and the concrete techniques that cut it, plus the tradeoffs nobody mentions.
• Why your Salesforce/NetSuite sync creates duplicate records (and how to fix it)Duplicate customers, accounts, and sales orders after a Salesforce↔NetSuite sync almost always come from four root causes. Here is how to diagnose each one and the fix pattern for it.