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MCP

Curated insights and technical field notes on MCP.

Reader guide

Start with the newest decision note, then follow the topic lanes when you need payments, AI systems, or product architecture depth.

Decision notes

Clear recommendation, rejected paths, and proof trail.

Systems maps

Visual artifacts sit near the section they explain.

Source posture

Public claims stay tied to released work or cited material.

AI systems

Context rot can start before the first prompt

My LLM session loaded 276,989 tool-schema tokens before I typed anything - eleven MCP servers, 609 tool definitions, 27.7 percent of a million-token window spent on payload the model might never call. A bigger context window did not fix that, it gave the problem more room. So I built mcp-broker, PgBouncer for MCP, and the always-loaded tool payload dropped by more than 80 percent.

Lead essay

Start here when you want the current Doric argument instead of a chronological archive.

Read the note

01 / Payments

Commerce architecture

Merchant-of-record decisions, checkout ownership, billing operations, settlement, reconciliation, and risk boundaries.

02 / AI tooling

Practical AI systems

Agentic commerce, multi-agent orchestration, model fine-tuning, runtime governance, and production deployment.

03 / Build notes

From idea to system

The design, architecture, and operating decisions behind Doric Stack products as they move from prototype to public release.

Latest Notes

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