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Notes from production.

Lessons from systems we run for real clients: what broke, what held, and what we would do again. Written by the engineers who were on call, not a content team.

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Your Knowledge Base Is Not Ready for RAG

The model is fine. Your wiki is a landfill.

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Webhooks break quietly. Design for the day they do.

A webhook you don't verify is a promise you can't check.

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Voice Agents Fail on Names, Numbers and Noise

The demo call is quiet. The real call has an impact wrench running behind it.

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The board wants AI. Give them a system, not a demo.

A mandate produces a demo by default. Push it toward a system instead.

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The Agent Loop Is Mostly Error Handling

The loop is 50 lines. Production is everything around it.

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Task limits are how no-code tools tell you to leave

A metered platform charges you more the harder your automation works. That is not a budget problem.

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RPA Clicks Buttons. Agents Make Decisions.

RPA replays a recording. An agent holds a goal and decides.

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OpenAI or Anthropic is a portability question

The real cost is not which model you pick. It is what switching costs later.

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No-shows are a software problem

A missed booking is rarely a flaky customer. It is a confirmation loop with a hole in it.

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Multi-Tenant AI Needs Isolation You Can Prove

A prompt telling the model to stay in its lane is not an access control.

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Multi-Location Businesses Need One Phone Brain, Not Five

Five branches, five phones, five versions of the truth.

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Multi-agent is an architecture tax. Pay it late.

Every agent you add multiplies your failure modes, not your output.

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MCP puts your data one tool call from the model. Act like it.

Every MCP server you connect is a capability you handed a language model.

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Hallucinations are a system design problem, not a model bug

Waiting for a model that never hallucinates is not a plan.

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Guardrails Are Code, Not System Prompts

A system prompt telling the model what not to do is a wish, not a rule.

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Context is an engineering budget

Bigger windows did not end context engineering. They moved where the decisions happen.

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Bad RAG Answers Start in the Ingest Pipeline

The wrong answer shipped weeks before anyone typed the prompt.

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An automation that needs a babysitter is not done

If someone re-runs it every Monday, you built a job description.

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An AI Receptionist Needs an Escalation Plan Before a Voice

Write the list of calls it must never take before you pick a voice.

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AI belongs inside the workflow, not instead of it

Replace the whole process with AI and you lose the parts that worked.

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Agents Earn Trust One Tool Call at a Time

An agent is only as reliable as its riskiest tool call.

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Agentic RAG Is RAG That Knows When to Look Again

Classic RAG retrieves once and hopes. Agentic RAG checks its work first.

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Agentic Coding Pays Off Under Code Review

An agent writes code at the speed your review process allows through.

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A Voice Agent Without Call Review Is Unaccountable

If you cannot read what your agent said yesterday, you are running calls on faith.

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A Model Upgrade Is a Breaking Change

The model behind your agent moves on the vendor's schedule, not yours.

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Your vibe-coded app is not 80% done

The demo working is the first 20%, not the last.

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You did not outgrow automation. You outgrew Zapier.

The ceiling you're hitting belongs to the tool, not the idea.

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A Claude developer is a systems engineer, not a prompt writer

The prompt is the smallest file in the repository.

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Vapi, Retell, Bland: The Platform Is Not the Product

The platform choice is the smallest decision in a voice AI build.

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The premium audit backlog is a data problem

The backlog is not a headcount problem. It is three copies of one file.

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Everyone quotes MIT's 95%. The other finding matters more.

MIT's real finding wasn't the failure rate. It was who avoids it.

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The engineer you interview should be the engineer who joins

Senior in the interview, junior on the invoice, is a business model.

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Structured output is the contract between model and product

Free text is a demo. A schema the rest of your stack can check is a product.

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Sensors do not manage sites. Systems do.

The sensor tells you the tank level. It does not tell you who fixes it.

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An AI agent is production-ready when failure is boring

Readiness is not what the agent gets right. It is what happens when it gets something wrong.

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Outbound AI calls work when the job is narrow

Voice AI fails at persuasion and succeeds at errands.

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Off-the-shelf tools quit before your business does

The tool that got you started was built for someone else's business.

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If You Cannot Run an Eval, You Do Not Have an Agent

A system you cannot test against fixed cases is a demo with opinions.

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n8n is a codebase. Treat it like one.

A workflow that runs your operations needs a rollback plan.

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Meeting notes are where decisions die

A transcript is storage. It is not the same thing as a task.

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MCP turns every integration into the same integration

MCP swaps N times M custom adapters for N plus M.

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Human-in-the-Loop Is a Feature, Not an Apology

The approval step is not a workaround for a weak model. It is the design.

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Compliance belongs in the schedule, not the audit

Checking eligibility after the shift is filled finds nothing but a record of who broke the rule.

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Clinical AI ships when a nurse signs off

Compliance is an accountability design, not a checkbox.

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Build on the Agent SDK when the loop is the product

Pick the framework by where the agent sits, not by GitHub stars.

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Bubble is a real platform when you engineer on it

It fails as magic. It holds as a platform you engineer on.

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Automations fail silently, and that is the expensive part

A stopped automation doesn't error. It just goes quiet.

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An MCP server is an API with opinions

Wrapping an API in MCP is easy. Making a model use it well is the job.

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An AI Receptionist Is a Systems Build, Not a Subscription

A voice model can talk. Turning it into a receptionist is the build.

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A Receptionist That Cannot Book Is an Answering Machine

Picking up the phone is easy. Writing a correct booking is the job.

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Start

Let’s build the one that runs after.

We build AI agents and automation, then stay on under an agreed service level. A senior engineer reads every brief, and your call gets scheduled within 24 hours.

What happens next

  1. 01

    You send a brief or book a call

    Two minutes, whichever you prefer.

  2. 02

    A senior engineer replies within 24 hours

    Not a sales rep.

  3. 03

    Honest scoping, in writing

    And if we’re not the right fit, we say so.

Abdul Basit, CEO of Hashlogics

“I started Hashlogics because too many teams ship a demo, get paid, and disappear. We build to a standard we’d run ourselves — and we stay to keep it running.”

Abdul Basit · CEO · a direct line

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