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Notes from the build.
Practical, sourced articles on the things we build every day.
How Much Does It Cost to Build an AI Agent in 2026?
What an AI agent really costs in 2026: build vs run, token math per task, why agents burn more tokens than chat, and how evals, caching and routing cut spend.
Read the article5 min readGetting Cited by ChatGPT, Claude and Google AI Overviews
What gets a site cited in AI answers, per the evidence: Google's AI features guidance, crawler access, llms.txt data, the GEO paper's limits and Ahrefs studies.
Read the article5 min readWhat an AWS Review Should Check: Cost, Security, Reliability
A practical AWS review checklist built on the Well-Architected Framework: root and IAM security, tested backups, rightsizing, Savings Plans and hidden costs.
Read the article6 min readHow to Cut Your AWS and AI Bill Without Breaking Anything
A safe order for cutting AWS and LLM costs: visibility, idle resources, rightsizing, Savings Plans, storage and NAT fixes, then caching, batching and limits.
Read the article5 min readCore Web Vitals in 2026: What to Fix First
Core Web Vitals in 2026: the LCP, INP and CLS thresholds, why LCP fails most often on mobile, and the fixes to make first, based on web.dev and Google guidance.
Read the article6 min readEvals First: How to Know Your AI Agent Actually Works
How to evaluate an AI agent before launch: real test tasks, code and model graders, pass@k vs pass^k, regression suites, and reading transcripts that matter.
Read the article6 min readStripe Webhooks Without Double Charges or Lost Orders
How to make Stripe payments safe to retry: idempotency keys, duplicate webhook events, signature checks, fulfillment that runs once, and daily reconciliation.
Read the articleFrom MenteDB
On AI memory.
Infinite Context Window for AI with Memory
How long term memory lets an assistant work past the limits of its context window.
Read on mentedb.comFrom MenteDBYour agent knows your preferences. It just never uses them
Why stored preferences go unused, and how memory recall fixes it.
Read on mentedb.comFrom MenteDBWhy your agent keeps repeating facts you already corrected
Contradictions, stale beliefs and how a memory engine should handle corrections.
Read on mentedb.com