MetaMCP

What it is

MetaMCP is an MCP proxy that dynamically aggregates MCP servers into a unified MCP server and applies middleware; it is itself an MCP server, so any MCP client can use it (README, read 2026-10-08). Tagline: “MCP Aggregator, Orchestrator, Middleware, Gateway in one docker”.

Maker and licence

Repo metatool-ai/metamcp (single maintainer “James” per the repo’s recent-updates note), MIT licence. 2,698 stars on 2026-10-08; latest release v2.4.22 (2025-12-19); last push 2026-06-22 (GitHub API). Docs: https://docs.metamcp.com.

Position

Self-hosted MCP aggregator / gateway with a web UI.

Core capabilities (README)

• Concepts: MCP servers, namespaces, endpoints, middleware, inspector, tool overrides and annotations.
• Auth: API keys (Bearer), MCP OAuth following spec 2025-06-18, OIDC/SSO providers, Better Auth for the UI; multi-tenancy with private and public scopes; separate registration controls.
• Traffic management: endpoint and per-user rate limits; counters are in-memory, so on a cluster each node counts only its own traffic (README).
• Deployment: Docker Compose (recommended), dev containers or local; Nginx SSE configuration notes.

MCP spec support

README: tools, resources and prompts supported; OAuth-enabled MCP servers tested for the 03-26 version; OAuth on exposed endpoints follows the 2025-06-18 spec.

Maturity

The author states (recent-updates.md) that development is slow but the project is maintained, with PR merging and no aggressive new features; no release since 2025-12-19.

Fit and limits (opinion)

Good for self-hosters who want a UI to compose namespaces of tools. Because of the maintenance status stated by the author, evaluate carefully for production and compare MCPJungle and Obot.

Related notes

• agentgateway, Arcade MCP Gateway, Portkey, OmniRoute: other gateway notes in this folder
• MCP security with a gateway, Model Context Protocol, A2A protocol
• HyperTool MCP (tool-subset proxy) and Tool Platforms (managed tool/integration platforms) cover adjacent ground and are not repeated here

Self-learning

• Docs: https://docs.metamcp.com
• Repo and README: https://github.com/metatool-ai/metamcp

Sources

• https://raw.githubusercontent.com/metatool-ai/metamcp/main/README.md and recent-updates.md (fetched 2026-10-08)
• https://api.github.com/repos/metatool-ai/metamcp and /releases/latest (fetched 2026-10-08)

Open items

• docs.metamcp.com not independently opened.
• Newer MCP spec revisions: not stated.