Phase 1: Retrieval & Knowledge Systems · ~25 hours · Python and TypeScript reference models; any production language

Capstone 13: Stateless MCP Server with Registry and Governance

Production MCP is not one server process. It is a chain of contracts: publishable metadata, live discovery, a stateless request envelope, authorization, policy, audit, and deployment evidence.

Hiring signal: Can build capstone 13: stateless mcp server with registry and governance end to end

What you will learn

Implement the stateless MCP request and result envelope.
Keep Registry metadata separate from live protocol discovery.
Build deterministic, cache-aware tool discovery.
Enforce issuer, audience, scope, and approval policy for every tool call.
Deploy Streamable HTTP without session affinity.
Prove behavior at the wire, authorization, policy, registry, and audit boundaries.

Introduction

Required MCP deep dives: Lesson 28: Tool Contracts, Lesson 29: Reliability, Lesson 30: Registry Supply Chain, and Lesson 31: Conformance Operations Protocol target: MCP 2026-07-28

Type: Capstone Languages: Python and TypeScript reference models; any production language Prerequisites: Phase 11, Phase 13, Phase 14, Phase 17, and Phase 18 Time: ~25 hours

Objective

Learning objectives

Implement the stateless MCP request and result envelope.
Keep Registry metadata separate from live protocol discovery.
Build deterministic, cache-aware tool discovery.
Enforce issuer, audience, scope, and approval policy for every tool call.
Deploy Streamable HTTP without session affinity.
Prove behavior at the wire, authorization, policy, registry, and audit boundaries.

Required MCP Prerequisite Path

Complete the four linked Phase 13 lessons in order before treating this capstone as production-ready:

Lesson 28 defines the tool, schema, content, pagination, completion, routing, and error contracts this server must expose.
Lesson 29 defines cancellation races, deadlines, idempotency, backpressure, retry, and reconnect behavior.
Lesson 30 defines namespace, provenance, admission pin, Registry status, drift, ledger, and rollback evidence.
Lesson 31 defines golden and negative transcripts, strict version eras, SDK differential checks, proxy proof, redaction, health, and release gating.

The capstone integrates those artifacts. It does not replace them with one happy-path SDK test.

Unlock the full lesson

You've read the first 2 sections. The rest of this lesson covers The Problem, Build, Check Yourself, Key Terms & Next — plus a hands-on lab, quiz, and project artifact.

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Key terms in this lesson

MCP (Model Context Protocol)