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Working notes on MCP: what a server can actually reach, how to install one in each client, what the errors mean, what these things cost, and how to publish one people install. Written for the person about to make the decision, not for the person who already made it.

No product announcements, and no invented statistics. Every figure in every post is counted from this catalogue when the page loads — if a number here is wrong, the catalogue is wrong, and you can click through to check it.

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Product 11 Aug 2026 · 3 min read

Running MCP across a team without making a mess

One engineer with five servers is fine. Twenty engineers with their own five each is an audit finding waiting to happen — and it arrives on the day somebody leaves.

MCP is trivial for one person and becomes a governance problem at about the fifth install. This is what changes: keys per machine rather than per person, installs owned by an account rather than a laptop, two ceilings that do different jobs, an audit trail that answers who approved what, and the two mistakes teams make first.

Read the post MRmcprush team · The people who run the gateway

Everything else 1–6 of 11 · 12 posts · 12 written end to end

11 Aug 2026 How to write tool descriptions a model gets right The most-read text you will ever write, read by something that cannot ask a follow-up question. Here is what makes the difference. Publishing 2 min MRmcprush team 10 Aug 2026 What happens between your prompt and a tool call Everything an agent does in one turn, in order, and which parts of it you are paying for whether they are used or not. Engineering 3 min MRmcprush team 9 Aug 2026 How to publish an MCP server people actually install The code is the easy half. What separates a listing with installs from one without is a short list of things that have almost nothing to do with your server working. Publishing 3 min MRmcprush team 8 Aug 2026 Every error an MCP gateway returns, and what to do about each one A handful of checks run before your call reaches a publisher. The first one that fails is the error you get — and knowing the order tells you exactly where to look. Engineering 3 min MRmcprush team 7 Aug 2026 MCP vs function calling, plugins and RAG: what it actually replaces Four things that get compared as if they were the same category. Three of them are, one is not, and knowing which is which saves a rewrite. Engineering 3 min MRmcprush team 6 Aug 2026 How MCP servers are priced, and what you are actually paying for Free, subscription, one-time licence — and the metered model that keeps being tried and keeps disappearing. What each one does to a buyer, and what it does to a publisher. Product 2 min MRmcprush team

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New writing when there is something to say — a release that taught us something, or a pass over the catalogue that produced a number worth publishing. No product mail.

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