News and Updates from Kristian Papadakishttps://kristianpapadakis.com/en-GBhttps://kristianpapadakis.com/writing/how-corey-is-builthttps://kristianpapadakis.com/writing/how-corey-is-builtThe architecture behind Corey, an agent OS built on Claude Code and MCP - routing, roles, skills, three-tier markdown memory, and a server-side approval gate.Sun, 02 Aug 2026 11:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/a-year-of-building-with-aihttps://kristianpapadakis.com/writing/a-year-of-building-with-aiTwelve months of building with Claude Code and MCP - the four stages from chat window to agent OS, what I got wrong at each one, and what actually made the difference.Sun, 02 Aug 2026 10:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/the-file-only-machines-readhttps://kristianpapadakis.com/writing/the-file-only-machines-readAn audit that found a machine-readable file no parser could read, contrast failing at 2.76 against a 4.5 minimum.Sun, 26 Jul 2026 09:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/bugs-about-the-worldhttps://kristianpapadakis.com/writing/bugs-about-the-worldSeven review rounds on a ticketing and refunds path - quantity handling, refund scope, idempotency keys.Sat, 25 Jul 2026 11:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/the-migration-that-hit-the-wrong-databasehttps://kristianpapadakis.com/writing/the-migration-that-hit-the-wrong-databaseHow a mismatch between DATABASE_URL and DB_URL sent a staging migration to a local dev database, why the error message pointed the wrong way.Fri, 24 Jul 2026 18:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/the-403-that-was-not-from-the-vendorhttps://kristianpapadakis.com/writing/the-403-that-was-not-from-the-vendorHow a default Python user agent triggered a Cloudflare bot ban on an email API, why the blast radius was wider than the reported symptom.Fri, 17 Jul 2026 20:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/building-an-mcp-server-people-actually-usehttps://kristianpapadakis.com/writing/building-an-mcp-server-people-actually-useThe design of a production MCP server that lets a customer's own AI drive your software - tool granularity, naming, recoverable errors, auth.Fri, 17 Jul 2026 16:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/the-filesystem-is-my-databasehttps://kristianpapadakis.com/writing/the-filesystem-is-my-databaseWhy the AI operator running my business stores everything in plain markdown files instead of a database.Fri, 17 Jul 2026 14:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/how-my-company-runs-from-my-phone-on-claude-codehttps://kristianpapadakis.com/writing/how-my-company-runs-from-my-phone-on-claude-codeThe daily reality of running a business through an AI operator on Claude Code - the morning brief, five execution lanes, an overnight dream cycle.Fri, 17 Jul 2026 12:00:00 GMTKristian Papadakishttps://kristianpapadakis.com/writing/i-built-an-ai-operator-that-runs-a-company-end-to-endhttps://kristianpapadakis.com/writing/i-built-an-ai-operator-that-runs-a-company-end-to-endHow I built an agent OS on Claude Code that runs a real B2B business end to end - routing, roles, memory, MCP, human-in-the-loop approvals.Fri, 17 Jul 2026 09:00:00 GMTKristian Papadakis