Topic
MCP servers
The Model Context Protocol (MCP) is the open standard through which hosts such as ChatGPT, Claude, VS Code and Gemini CLI let an AI agent use a product's tools. These notes cover when to build a server, what each host requires of it, how to test it, and how websites are being opened to agents.
An MCP server is the program that lists those tools, and an AI host is the application that runs it for a person. The short answers from these notes: build a server now if customers already ask agents about you or agents already scrape you, and wait if nobody is asking yet. Design it to the strictest host rule, because eight hosts add their own rules to the specification and conflict on name length, allowed characters, required annotations and budgets. Expect to assemble the testing yourself: of about eighty tools reviewed on 1 October 2026, every capability exists somewhere, but no open, local tool combines them. And check what your website already exposes, since Wix, Shopify, GitBook and Mintlify sites already have MCP endpoints.
Most of the notes summarise research founder Amir Pournasserian published on pournasserian.com. They are what we build to in our MCP servers and AI integrations service: a two-week design sprint that ends in a working prototype against one host, then a production build secured with OAuth 2.1 and tested against each host's rules.
October 8, 2026 · 4 min read
Your website has a new visitor: AI agents
An MCP server for a website lets AI agents search the site, ask it questions and act on it for a person, and who runs that server decides what agents see. A summary of founder Amir Pournasserian's October 2026 survey of 44 tools, and what it means for a business.
October 8, 2026 · 4 min read
Should your product have an MCP server? A decision guide
An MCP server lets AI agents in ChatGPT, Claude and other hosts use your product through a small set of tools. This decision guide for SaaS and platform teams gives five signals to build one now, three to wait, and what a good first server looks like.
October 8, 2026 · 4 min read
What each AI host requires of an MCP server
Each AI host adds its own rules to the MCP specification, so a compliant server can still be rejected by the Claude directory or the ChatGPT plugin directory (shared with Codex). The rules of eight hosts as of 1 October 2026, where they conflict, and how we build to them.
October 8, 2026 · 4 min read
Testing an MCP server: what exists and what is still missing
Testing an MCP server covers six jobs: inspection, evaluations of tool choice, design audits, host-rule checks, security scans and load tests. Founder Amir Pournasserian reviewed about eighty tools and compared thirty-one on 1 October 2026: every capability exists somewhere, but no open, local tool combines them.
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