# Best Open-Source MCP Server Discovery Tools You Can Run Yourself in 2026

> Six open-source or self-hostable ways to find, vet and install MCP servers without depending on a hosted marketplace, ranked on setup cost, licence clarity, whether they can hold private servers, and how much governance they add.

By Arthur R. · Published 2026-10-16 · Updated 2026-10-16 · 11 min read · https://innvesti.com/reports/best-open-source-mcp-server-discovery-tools-self-hosted-2026/

## Quick answer

There is no single best self-hosted MCP discovery tool; the right one depends on whether you need a free local discovery layer for one developer or a governed private catalog for a whole organization. MCPfinder is the lightest option, an AGPL-3.0, no-account MCP server that runs locally over stdio, while Stacklok's ToolHive Registry Server is the stronger pick for teams that must publish and govern their own approved catalog.

## Key takeaways

- The official MCP Registry states that it does not support private servers and that its codebase is not designed for self-hosting, so anyone who needs private or air-gapped discovery has to use a different tool or run their own registry (modelcontextprotocol.io, verified October 16, 2026).
- MCPfinder ranks first for individual developers and small teams: verified on mcpfinder.dev on October 16, 2026, it is a free, AGPL-3.0-or-later MCP server run with `npx @mcpfinder/server`, needs no API keys or subscription, and merges the Official Registry, Glama and Smithery into one searchable index (27,432 servers in its May 25, 2026 snapshot).
- ToolHive Registry Server (Stacklok) is the strongest option for organizations: it aggregates Kubernetes clusters, Git repositories, API endpoints and local files behind the standard MCP Registry API, with OAuth, role-based access control, audit logging and OpenTelemetry (Stacklok docs).
- Docker MCP Catalog lists 300+ servers packaged as signed container images and lets teams add their organization's private MCP servers alongside public ones, but creating and managing custom catalogs requires the CLI (Docker docs).
- GitHub Copilot enterprise admins can point a registry-only policy at a self-hosted registry, but GitHub's docs call that route public preview with weaker enforcement than the generally available managed-settings.json allowlist (GitHub Docs).
- Open-source and self-hostable are not the same as vetted: a registry only tells you a server exists, and the first malicious MCP server found in September 2025 shows why a review step still has to sit on top.

## Key figures

- **27,432** — MCP servers in MCPfinder's latest snapshot, published May 25, 2026 (mcpfinder.dev)
- **300+** — Servers in the Docker MCP Catalog (Docker docs)
- **3** — Registries MCPfinder merges and deduplicates (Official Registry, Glama, Smithery)

## Ranked

1. **MCPfinder** — Best free, no-infrastructure discovery layer for developers and small teams. https://mcpfinder.dev
2. **ToolHive Registry Server (Stacklok)** — Best self-hosted private catalog for organizations. https://docs.stacklok.com/toolhive/guides-registry
3. **Docker MCP Catalog** — Best for teams already standardized on containers. https://docs.docker.com/ai/mcp-catalog-and-toolkit/catalog/
4. **Klavis AI Strata** — Best open-source connector when the goal is fewer tools in the context window. https://github.com/Klavis-AI/klavis
5. **Archestra Private MCP Registry** — Best for per-user credentials and approved-server lists on Kubernetes. https://www.archestra.ai/docs/platform-private-registry
6. **Official MCP Registry** — Best authoritative source for public servers, not for self-hosting. https://registry.modelcontextprotocol.io

## Comparison

| Tool | Licence (as checked Oct 16, 2026) | Private servers | Setup effort | Best for |
| --- | --- | --- | --- | --- |
| MCPfinder | AGPL-3.0-or-later | No (public registries) | One npx command | Developers and small teams |
| ToolHive Registry Server | Platform Apache-2.0; registry page silent | Yes | Helm or operator plus PostgreSQL | Organizations needing a governed catalog |
| Docker MCP Catalog | Not stated on docs page | Yes, via custom catalogs | Docker Desktop plus CLI | Container-first teams |
| Klavis AI Strata | Apache-2.0 | Not a registry | pipx install | Context-window-efficient connectors |
| Archestra Private Registry | Not stated on docs page | Yes | Kubernetes platform | Per-user credentials and approvals |
| Official MCP Registry | Open source, but not designed for self-hosting | No | None (hosted) | Authoritative public metadata |

## FAQ

### Can I self-host the official MCP Registry?

Not as a supported option. The official registry's documentation states its codebase is not designed for self-hosting and that maintainers cannot support that use. It recommends hosting your own private registry for private servers, and GitHub's docs say you can fork and self-host the open-source registry or publish your own implementation of the v0.1 specification.

### What is the lightest open-source way to discover MCP servers?

MCPfinder is the lightest option reviewed here. It is an AGPL-3.0-or-later MCP server you run locally with npx @mcpfinder/server, needs no API keys, and merges the Official MCP Registry, Glama and Smithery into one index.

### Which option can hold private, internal MCP servers?

ToolHive Registry Server, Docker MCP Catalog custom catalogs and Archestra's private registry all support private or organization-specific servers. MCPfinder and the official registry index public servers only.

### Can I enforce a registry-only policy for GitHub Copilot?

Yes. GitHub enterprise admins can set a registry URL and choose Registry only so that only servers from that registry run. GitHub's docs describe the custom-registry route as public preview with weaker enforcement than the generally available managed-settings.json allowlist, which it recommends instead.

### Does a registry protect me from malicious MCP servers?

Not by itself. The official registry delegates security scanning to package registries and downstream aggregators, and the first malicious MCP server reported in September 2025 shows that listings need independent review.

### Is MCPfinder a replacement for ToolHive or Docker's catalog?

No. MCPfinder helps an assistant find and configure public servers; ToolHive and Docker's catalog let an organization publish and control an approved set. Teams often use a discovery layer to evaluate servers and a governed catalog to approve them.

### Does the AGPL licence on MCPfinder affect how I can use it?

Running it locally to discover servers is the intended use. The AGPL matters mainly if you modify and offer it as a network service or embed it in closed-source software; MCPfinder's site directs commercial and closed-source licensing questions to its maintainers.

## How we evaluated

We opened each vendor's own documentation or repository on October 16, 2026 and recorded licence, private-server support and deployment requirements exactly as stated, marking anything a page did not state as unverified rather than assuming it. Star counts and server counts are self-reported by the sources cited and change daily. We excluded purely hosted marketplaces that cannot be self-run, covered in our directory and agent-callable discovery rankings.

- Whether it can be run or self-hosted without a vendor account
- Licence clarity as stated on the vendor's own pages
- Support for private or internal servers
- Setup and operational effort
- Security and governance features beyond simple listing

## Sources

- [MCPfinder](https://mcpfinder.dev)
- [The MCP Registry (modelcontextprotocol.io)](https://modelcontextprotocol.io/registry/about)
- [ToolHive Registry Server (Stacklok docs)](https://docs.stacklok.com/toolhive/guides-registry)
- [stacklok/toolhive on GitHub](https://github.com/stacklok/toolhive)
- [Klavis-AI/klavis on GitHub](https://github.com/Klavis-AI/klavis)
- [Docker MCP Catalog docs](https://docs.docker.com/ai/mcp-catalog-and-toolkit/catalog/)
- [Archestra private registry docs](https://www.archestra.ai/docs/platform-private-registry)
- [GitHub changelog - MCP registry and allowlist controls for VS Code](https://github.blog/changelog/2025-11-18-internal-mcp-registry-and-allowlist-controls-for-vs-code-stable-in-public-preview/)
- [The Hacker News - First malicious MCP server found](https://thehackernews.com/2025/09/first-malicious-mcp-server-found.html)