Module schema_exposure 

Schema Exposure Architecture for MCP Built-in Servers.

This module implements the Three-Layer Schema Model:

• Layer 1: Source Schema (original API specification)
• Layer 2: Exposure Policies (what gets exposed)
• Layer 3: Derived Schemas (computed views)

See SCHEMA_EXPOSURE_ARCHITECTURE.md for full design documentation.

Structs

CodeModeExposurePolicy

Code Mode exposure policy.

DerivationMetadata

Metadata about schema derivation.

DerivationStats

Statistics about schema derivation.

DerivedSchema

Derived schema for a specific exposure context.

FilteredOperation

An operation that was filtered during derivation.

GlobalBlocklist

Global blocklist - these operations are never exposed.

McpExposurePolicy

Complete exposure policy configuration.

MethodExposurePolicy

Per-method-type exposure policy.

Operation

Normalized operation model that works across all schema formats.

OperationParameter

Operation parameter.

SchemaDeriver

Derives schemas from source + policy.

SchemaMetadata

Metadata about the source schema.

ToolExposurePolicy

Tool exposure policy.

ToolOverride

Per-operation customization for tools.

Enums

ExposureMode

Exposure mode determines how allowlist/blocklist are interpreted.

FilterReason

Why an operation was filtered.

GraphQLOperationType

GraphQL operation type.

OperationCategory

Operation category for filtering.

OperationDetails

Format-specific operation details.

OperationRiskLevel

Risk level for an operation.

SchemaFormat

Schema format identifier.

SchemaSource

Where the schema came from.

SqlStatementType

SQL statement type.

Functions

pattern_matches

Check if a pattern matches a string using glob-style wildcards. Supports: * (match any characters)