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OpenAPI → MCP Server generator CLI
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MCP development npm Local 196 a week MIT
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In-memory, stdio, and HTTP MCP test harnesses.
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Developer tools npm Local 646 a week SSPL-1.0
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Debugger io.github.Digital-Defiance/mcp-debugger Node.js and TypeScript debugging with 25+ tools for AI agents
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Developer tools Official MCP Registry · npm Local 53 a week MIT
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asyncmcp io.github.bh-rat/asyncmcp-changelog.md Async MCP Transport layer for queue and async based systems
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MCP development PyPI Local APACHE-2.0
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Workit shared MCP transport for the eight task and policy operation families
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Project management npm Local 293 a week MIT
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MCP transport adapters - Streamable HTTP
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MCP development npm Local APACHE-2.0
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MCP transport, session, auth hooks, and error mapping for CodeLit products
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MCP development npm Local MIT
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A unified API abstraction over the MCP SDK. It aggregates tools from multiple MCP servers into OpenAI's format, automatically orchestrates tool calls and responses, and injects resources directly into
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Communication and chat npm Local ISC
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Security-first MCP server for Vikunja — full API coverage, read-only by default with opt-in write/delete, and just one dependency (the official MCP SDK).
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Developer tools npm Local MIT
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MCP server building blocks: tool registry types, dispatcher with timeout/perf/abort/error-wrap baked in, stdio + Streamable HTTP transports, sanitize() for user content, UUID-gated prompt-injection he
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MCP development npm Local MIT
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HelixID middleware for Model Context Protocol (MCP) servers — inbound VP verification with scope enforcement and outbound VP attachment for agent-to-tool calls.
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MCP development npm Local APACHE-2.0
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Reference adapter from the official @modelcontextprotocol/sdk Client to the @hlao/mcp-gateway McpClient port. Peer-dep on the SDK so downstream apps pin their own version.
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MCP development npm Local MIT
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MCP server registry & tool routing — MCP server registry with progressive 3-layer discovery, capability matching, and dynamic tool routing for multi-agent systems.
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MCP development npm Local SEE-LICENSE-IN
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A reactive, cached, embeddable MCP client for non-agentic apps. TanStack Query keys + RTK Query tags + LSP-client lifecycle, on top of the official MCP SDK.
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Developer tools npm Local MIT
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LongTable MCP transport for workspace state and Researcher Checkpoints
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MCP development npm Local MIT
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MCP transport bridges for MCP Restrictor.
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MCP development npm Local MIT
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Stable MCP Apps server metadata, validation, fragments, and direct-server feature composition for MCP SDK v2.
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MCP development npm Local BSD-3-CLAUSE
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Doc2x MCP server (stdio, MCP SDK).
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MCP development npm Local MIT
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Canonical Oxy app catalog to MCP transport and OAuth resource validation
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MCP development npm Local SEE-LICENSE-IN
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Read-only MCP server for AI agents to inspect and debug Roblox Studio — safe browsing with zero write risk.
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MCP development npm Local MIT