Core Features

Complete guide to registering tools, shorthand schemas, Zod validation, return types, and execution contexts in mcponce.

Parametric resources matching dynamic RFC 6570 URI patterns with parameter extraction, autocompletion callbacks, and automatic return normalization.

Comprehensive security hardening for MCP servers including Bearer token authentication, custom identity validators, tool-level permission scopes, sliding-window rate limiting, and CORS headers.

Native image and binary data support with automatic MIME detection, base64 encoding, and mixed content blocks.

High-throughput LRU response caching with automatic serialization, custom keys, and instant eviction.

How to compose tools hierarchically with automatic cycle detection, depth protection, and telemetry tracking in mcponce.

Test tools, inspect schemas, browse resources, and debug MCP autocompletion in a zero-dependency dark-mode developer playground.

Request LLM completions (sampling/createMessage) and discover workspace directories (roots/list) from connected AI clients.

Composable Onion-style middleware pipeline for authentication, argument mutation, logging, and error interception.

Automatically transform any REST API into type-safe MCP tools from an OpenAPI v3 or Swagger v2 specification with app.fromOpenApi.

Real-time progress updates with MCP notifications/progress, SSE streaming, and CLI terminal status bars.

Real-time resource update notifications with client subscriptions (notifications/resources/updated) and HTTP Bearer Token / API Key protection.

How mcponce prevents tool execution errors by intelligently coercing stringified numbers, booleans, and JSON arguments.