#sse

Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably, socket.io, Phoenix.PubSub, SignalR. Set up once and forever.

Drop-in replacement for Requests. Automatic HTTP/1.1, HTTP/2, and HTTP/3. WebSocket, and SSE included. WASI Supported.

Mock everything your AI app talks to — LLM APIs, MCP, A2A, AG-UI, vector DBs, search. One package, one port, zero dependencies.

🪝 Durable webhook gateway with Caddyfile-style config. Receive → queue → deliver (pull, push, SSE, or exec). HMAC auth, retries, DLQ, hot reload.

A TypeScript framework for building MCP servers.

Portable AI agent runtime for the JVM. One @Agent class runs on Spring AI, LangChain4j, Anthropic, or 9 more behind one SPI. Token streaming, tool calls, human approvals, and governance over WebSocket, SSE, gRPC, or WebTransport/HTTP3. Speaks MCP, A2A, and AG-UI.

Realtime server for reliable two-way communication to power-up any backend

Multi-GB/s JSON (de)serialization written in AssemblyScript utilizing elegant SIMD and SWAR algorithms

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

Babysitter enforces obedience on agentic workforces and enables them to manage extremely complex tasks and workflows through deterministic, hallucination-free self-orchestration

A free and open-source toolkit for running other people's code in your applications.

C++ image processing and machine learning library with using of SIMD: SSE, AVX, AVX-512, AMX for x86/x64, NEON, SVE for ARM, HVX for Hexagon

A very simple and straightforward HTTP client written in Rust.

Experimental extractors, middleware, and other extras for possible inclusion in Actix Web.

EventSource client for Node.js, browsers and other JavaScript runtimes

Mock API requests in Storybook with Mock Service Worker.

A TypeScript streamable HTTP and SSE proxy for MCP servers that use stdio transport.

Bidirectional stdio ↔ HTTP gateway for MCP servers — connect clients to remote servers or publish local servers

Implementations of SIMD instruction sets for systems which don't natively support them.

The transparent, composable harness for TypeScript agents. The same code runs the full agent loop on a local 4B model or a frontier API, with tool-call healing, verification, and a signed evidence receipt for every run.

OpenAPI generator for Rust: typed models, async Reqwest/SSE clients, and Axum server scaffolding for OpenAPI 3.0/3.1.

Harness the power of local LLMs with this TUI MCP Client for Ollama. Featuring all core MCP primitives (tools, prompts, resources), agent mode, multi-server, model switching, streaming responses, human-in-the-loop, thinking mode, model params config, system prompts, and saved preferences.

Typescript SDK to build MCP servers in an agnostic way