Build log

Notes from building Cyril: the decisions, the failures, and what they taught us about software an agent can operate.

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The Cyril team

9 min read

What changes when your development team is an AI

Cyril is a full business platform built by AI, directed by one person. The interesting part is not the speed — it is that the practices which make AI a reliable developer turn out to be the same practices that make software agent-ready.

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From the other topics

The integration tax by team size: 10, 40 and 150 people

The integration tax calculator’s own model, run at three team sizes with its default assumptions. Every line, every total and every input is stated, so each number can be reproduced in the calculator, along with why the share that is not licences falls as a team grows but never drops below half.

Other topics

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AI architecture 5

Why an AI-native platform has to be designed that way from the foundation: one data model, one context surface, one set of guarantees.

LatestThe integration tax: what five separate tools really cost

Agents and trust 2

What has to be true underneath before software can safely take actions on your behalf: permissions, an audit trail, and a way back.

LatestWhat to ask an AI vendor about permissions

Choosing software 8

How to evaluate a business platform, and what a stack of disconnected tools actually costs. Written for the person who has to decide.

LatestHow to run a consultancy on one system: from proposal to paid invoice

Running a consultancy 4

For consulting firms: winning engagements, delivering them on budget and getting paid, and what the software underneath has to do at each step.

LatestHow to run a consultancy on one system: from proposal to paid invoice

Cyril is opening early access

One platform for sales, projects, support, docs and financials, with the AI underneath rather than bolted on. Join the waitlist to be among the first to use it.

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