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vinkius-labs/mcp-fusion

v3.19.0 Feature

This release adds 3 notable features for engineering teams evaluating rollout.

Published 1mo MCP Developer Tools
✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

mcp mcp-framework mcp-server model-context-protocol

Summary

AI summary

New @vurb/a2a package adds A2A v1.0.0 protocol bridge with JSON‑RPC dispatcher, SSE transport, and Agent Card generation.

Full changelog

@vurb/a2a — A2A Protocol Bridge (NEW PACKAGE)

Spec-compliant A2A v1.0.0 bridge enabling Vurb.ts MCP servers to participate in multi-agent orchestration through standardized Agent Cards, JSON-RPC dispatch, and SSE streaming. First TypeScript MCP framework with native A2A interoperability.

Highlights

  • A2AHandler — Framework-agnostic JSON-RPC 2.0 dispatcher for all 11 A2A protocol methods
  • StreamableHttpTransport — HTTP transport layer supporting both sync JSON responses and SSE streaming (Express, Hono, Fastify)
  • StreamingExecutorLike — Interface for streaming tool executors via AsyncGenerator
  • TaskManager — In-memory task lifecycle engine with finite state machine, TTL eviction, cursor-based pagination
  • AgentCardCompiler — Auto-compiles MCP tool registry into A2A Agent Card (/.well-known/agent-card.json)
  • SSE Utilities — formatSSEEvent(), formatSSEErrorEvent(), parseSseStream()
  • Complete Types — 100% A2A v1.0.0 type coverage (20+ interfaces, discriminated unions)
  • Error Classes — 6 spec-compliant error classes with JSON-RPC error codes

Test Suite

210 tests across 7 suites — A2AHandler (50), TaskManager (36), AgentCardCompiler (35), Errors (45), SSE (13), Extensions (14), StreamableHttpTransport (17)

Install

npm install @vurb/[email protected]

See CHANGELOG.md for full details.

View diff on GitHub

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About vinkius-labs/mcp-fusion

A TypeScript framework for building production-ready MCP servers with automatic tool discovery, multi-transport support (stdio/SSE/HTTP), built-in validation, and zero-config setup.

All releases →

Related context

Earlier breaking changes

  • v4.0.0 All packages now published under the `@mcpfusion` npm scope.
  • v4.0.0 GitHub repository renamed to vinkius-labs/mcpfusion; npm packages under @mcpfusion scope.
  • v4.0.0 All source code, documentation, CLI output, workflows, and npm packages now use the @mcpfusion scope.

Beta — feedback welcome: [email protected]