Flexible Endpoint Filtering And Selective Tool Exposure

via “tool and resource sampling with context-aware filtering”

Opinionated MCP Framework for TypeScript (@modelcontextprotocol/sdk compatible) - Build MCP Agents, Clients and Servers with support for ChatGPT Apps, Code Mode, OAuth, Notifications, Sampling, Observability and more.

Unique: Integrates sampling as a first-class MCP server concept with declarative filtering rules that evaluate context at request time, rather than treating it as a post-hoc filtering step or client-side concern

vs others: More efficient than client-side filtering because it reduces the tool list sent over the wire and prevents agents from attempting to call tools they lack permissions for, whereas naive approaches send the full tool registry and rely on runtime errors

Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!

Unique: Provides declarative endpoint filtering at the MCP layer using path patterns and tags, enabling selective tool exposure without modifying the underlying FastAPI application. Filtering is applied during schema conversion, not at runtime.

vs others: Allows selective endpoint exposure without modifying FastAPI code or creating separate application instances, whereas alternatives typically require separate API gateways or endpoint duplication.

via “endpoint filtering and selective exposure”

Expose your FastAPI endpoints as Model Context Protocol (MCP) tools, with Auth!

Unique: Implements filtering at the schema conversion stage (before MCP tool generation) rather than at runtime, preventing filtered endpoints from ever being exposed as MCP tools. This is more secure than runtime filtering because it eliminates the possibility of filter bypass through protocol manipulation.

vs others: More secure than exposing all endpoints and relying on LLM prompts to avoid dangerous calls, and more flexible than hardcoding endpoint lists because filtering can be based on tags, paths, or custom predicates.

via “per-server tool filtering and allowlisting”

** - An MCP (Model Context Protocol) aggregator that allows you to combine multiple MCP servers into a single endpoint allowing to filter specific tools.

Unique: Implements server-side allowlisting at the aggregator level rather than relying on backend server configuration, enabling centralized tool exposure control across multiple backends from a single configuration file

vs others: Provides centralized tool filtering without modifying backend servers or requiring per-client configuration, whereas backend-level filtering would require changes to each server and client-side filtering would duplicate logic across clients

via “selective tool exposure via filtering and name-prefixing”

** - Provides auto-configuration for MCP client functionality in Spring Boot applications.

Unique: Provides both filtering (inclusion/exclusion) and prefixing (collision avoidance) in a single capability, rather than requiring separate mechanisms for each concern

vs others: Addresses tool namespace collision problem at the client level before tools reach the LLM, preventing prompt engineering workarounds and ensuring deterministic tool availability