Developer Extracts Rust Matrix SDK into Standalone WebAssembly Library

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A developer working on a project called Vigilant encountered growing pains from tightly coupling the Rust Matrix SDK with application UI code, making independent testing and reuse difficult. To address this, they extracted the Matrix client integration into a standalone, reusable library called matrix-sdk-bridge. The library compiles Rust to WebAssembly using wasm-bindgen, allowing JavaScript to handle UI rendering while WebAssembly manages protocol state, cryptographic sessions, and timeline synchronization. This separation created a clean architectural boundary, enabling frontend developers to consume or mock WASM methods without modifying Rust code. The developer noted that treating internal tooling as open-source from the start encourages cleaner abstractions, better documentation, and higher overall code quality.

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AWS Expands Aurora DSQL to 5 New Regions, Adds PHP Connector and New Relic MCP Integration

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ProgrammingDEV Community ·

Nabu.NET library converts ASP.NET Core Web APIs into MCP servers with one attribute

A new open-source library called Nabu.Mcp.AspNetCore allows developers to expose existing ASP.NET Core Web API endpoints as Model Context Protocol (MCP) tools by adding a single [McpTool] attribute. The library preserves the full ASP.NET Core middleware pipeline, meaning authentication, authorization, validation, and rate limiting remain fully enforced on every MCP call. Tool descriptions are automatically derived from XML documentation, while input schemas are generated from CLR types, reducing the need for manual configuration. Per-caller tool visibility is supported, so the tools/list response is filtered according to each caller's authorization policies. The package is MIT licensed, targets netstandard2.0 through net10.0, and is available on NuGet under the name Nabu.Mcp.AspNetCore.

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ProgrammingDEV Community ·

How to Build a .NET MCP Client That Connects to and Calls MCP Servers

A developer tutorial on DEV Community explains how to consume Model Context Protocol (MCP) servers from a .NET application, positioning the app itself as the client rather than relying on tools like Claude Desktop. The guide uses the ModelContextProtocol.Core SDK to establish a connection via stdio transport, which launches the MCP server as a child process and performs a protocol handshake. Three core steps are outlined: connecting through a transport layer, discovering available tools and their schemas at runtime, and invoking those tools by name with arguments. The tutorial highlights that runtime tool discovery distinguishes MCP clients from standard API clients, since no pre-generated proxy classes are involved. It also warns developers to properly dispose of the client object to avoid orphaned child processes, and recommends listing available tools before making any calls to avoid debugging mismatched tool names.

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ProgrammingDEV Community ·

Microsoft MCP SDK lets .NET apps act as MCP clients to consume tool servers

Developers building .NET applications can now use the ModelContextProtocol SDK to connect their apps directly to MCP servers as clients, rather than relying on third-party tools like Claude Desktop. The process involves three core steps: connecting to a server via stdio or HTTP transport, discovering available tools at runtime, and invoking them by name with arguments. Unlike traditional API clients, there are no pre-generated proxy classes — tools and their schemas are received dynamically, requiring code that adapts at runtime. The stdio transport works by launching the MCP server as a child process, with the SDK handling the protocol handshake automatically. A key practical tip highlighted is to always print the discovered tool list before making calls, since tool names are SDK-derived and may differ from the original C# method names in the server code.

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