mcp-php-schema

MCP PHP Schema Reference

Quick Navigation

• Server types (resources, tools, prompts): reference/server.md
• Client types (sampling, elicitation, roots): reference/client.md
• Common types (protocol, JSON-RPC): reference/common.md
• RPC methods: reference/rpc-methods.md
• Factories: reference/factories.md

Schema Structure

3 domains, 17 subdomains, 164 types total.

Domains Overview

Domain	Types	Purpose
Common	59	Protocol base, JSON-RPC, content blocks
Server	59	Tools, resources, prompts, logging
Client	46	Sampling, elicitation, roots, tasks

Common Patterns

Finding a Request/Result Pair

1. Check rpc-methods.md for method name
2. Look up request type in domain file
3. Find corresponding result type

Using Factory Classes

Factories create the correct DTO from discriminator values. See factories.md for patterns.

JSON Data Files

For programmatic access:

• data/schema-index.json - Lightweight discovery index
• data/schema-common.json - Common domain types
• data/schema-server.json - Server domain types
• data/schema-client.json - Client domain types

Search Scripts

# Search types by name
./scripts/search-types.sh "Resource"

# Get type details
./scripts/get-type.sh "CallToolRequest"

# Find RPC method
./scripts/find-rpc.sh "tools/call"