MCP Server License Statistics 2026: MIT and Apache Cover 85% of Listings

Permissive licensing dominates MCPtrove's directory snapshot: 336 listings use MIT and 106 use Apache-2.0, together covering 442 of 520 listings.

Contents

• Methodology and limitations
• Main findings
• Interpretation
• Practical decision guidance
• How to cite and download the data
• Related MCPtrove research
• FAQ

Methodology and limitations

This analysis describes license labels in a 520-listing snapshot of MCPtrove’s directory. It is a directory analysis, not a survey of users, maintainers, or organizations. It also does not measure every MCP server in existence. The findings should be read as a structured view of the listings represented in this snapshot.

MCPtrove preserves the original license label in the raw CSV. For counting, the directory applies an editorial license-family normalization so that related labels can be compared consistently. This normalization is intended to improve discovery and analysis; it is not legal advice.

The classification rules are:

• Exact MIT labels are counted as MIT.
• Exact Apache-2.0 labels are counted as Apache-2.0.
• Missing or explicitly unavailable license information is counted as Unspecified.
• A recorded label containing AGPL, GPL, MPL, Mozilla Public, EUPL, or EPL is counted as Copyleft.
• ISC, BSD, Unlicense, and MIT OR Apache are counted as Other permissive.
• Remaining custom, source-available, or proprietary labels are counted as Other/source-available/proprietary.

These families simplify comparison, but they do not replace review of the original terms. A repository license can change after a listing is published. A listing can also depend on components distributed under other licenses, and a hosted service may impose terms that are separate from the repository license. Trademark restrictions, attribution requirements, patent provisions, network-use conditions, and commercial-service agreements may all matter even when the headline license is familiar.

The raw CSV is therefore the authoritative place to inspect the original recorded label. The family is a counting aid, not a conclusion that a project is safe for every intended use.

Main findings

The snapshot contains the following normalized license families:

The headline result is concentration around two recognizable permissive licenses. MIT and Apache-2.0 together account for 442 of 520 listings, or 85.0% of the snapshot.

MIT is the largest family by a wide margin, with 336 listings. Apache-2.0 follows with 106 listings. This gives MCP users a strong initial signal: most listings in this directory snapshot present a license family that many engineering teams already recognize and have processes for reviewing.

The remaining categories still matter. Copyleft accounts for 27 listings, while 25 listings are Unspecified. Other permissive licensing accounts for 13 listings, and another 13 listings fall into the Other/source-available/proprietary family.

The smaller categories should not be dismissed as edge cases. Unspecified licensing creates an information gap at precisely the point where a deployment, redistribution, or internal approval process may require clarity. Custom, source-available, and proprietary terms may be perfectly workable, but they usually demand closer reading because the name alone does not provide the same shortcut as MIT or Apache-2.0.

Interpretation

The editorial takeaway is simple: a familiar permissive label reduces initial review friction, but it does not eliminate review.

MIT and Apache-2.0 are useful starting points because many engineering and legal teams know where to begin with them. That familiarity can make a project easier to triage, compare, and route through an organization’s existing open-source process. It can also help a team distinguish a potentially straightforward repository review from a listing that needs specialized attention.

But license familiarity is not the same as deployment permission in every context. The repository may contain dependencies with different terms. A project may have separate documentation, hosted-service, API, or trademark conditions. The practical obligations of attribution, notices, patent rights, modifications, redistribution, and commercial use still depend on the actual license text and the way the software is used.

The presence of Copyleft, Unspecified, and Other/source-available/proprietary listings adds useful diversity to the directory, but it also changes the review posture. These categories should prompt a deliberate check of the original label and associated terms. “Unspecified” is not a permissive license; it is an absence of enough information in the recorded listing to make a confident family-level conclusion.

This analysis is descriptive, not causal. It does not show that a particular license causes adoption, maintenance activity, trust, quality, or popularity. It only shows how the recorded license labels are distributed within the MCPtrove snapshot. Any broader conclusion would require additional evidence.

Practical decision guidance

Use the license family as an intake signal, then inspect the original record before making a deployment or redistribution decision.

For an MIT or Apache-2.0 listing, begin with the repository license and notice requirements. Confirm that the current repository state matches the listing and check whether dependencies, bundled assets, or generated components introduce other obligations. If the MCP server is accessed as a hosted service, review the service terms separately from the source license.

For a Copyleft listing, identify what your organization plans to do: run the server internally, modify it, redistribute it, combine it with other software, or offer it through a network service. Those distinctions can affect the relevant obligations. The normalized family is a prompt for careful reading, not a substitute for legal review.

For an Unspecified listing, treat the missing label as a genuine review item. Look for a repository license file, package metadata, release notes, and maintainer statements. If the terms remain unclear, do not infer permission from public availability alone.

For Other/source-available/proprietary listings, read the custom terms directly. Source availability does not automatically mean open-source permission, and a project may restrict commercial use, redistribution, hosted use, or particular categories of deployment.

MCPtrove’s open-source collection is a useful next stop for readers who want to browse projects with an open-source orientation. The official collection can help when provenance and publisher identity are central to the decision. For broader discovery, use best MCP servers.

For configuration and deployment risk, MCPtrove recommends Config Doctor. It is a configuration-focused resource, not a replacement for license interpretation or legal advice.

How to cite and download the data

Download the raw CSV from /research-data/mcp-server-license-statistics-2026.csv. The file preserves the original license label alongside the normalized family used for this analysis.

The safest way to reuse the figures is to cite the CSV and keep the scope visible: these results describe MCPtrove’s directory snapshot, not the entire MCP ecosystem. If the directory changes, the counts and any derived interpretation may change as well.

Citation: MCPtrove, “MCP Server License Statistics 2026: MIT and Apache Cover 85% of Listings,” https://mcptrove.com/research/mcp-server-license-statistics, accessed September 23, 2026.

Related MCPtrove research

For a complementary view of the directory, read MCP maintenance activity statistics and MCP server language statistics. License, maintenance activity, and implementation language describe different dimensions of a listing; none should be treated as a stand-in for the others.

FAQ

Does MIT or Apache-2.0 automatically mean a listing is safe to use?

No. These labels can reduce initial review friction, but the repository may include dependencies, assets, or services with separate terms. Confirm the current license text, notices, dependencies, and intended use.

Why does MCPtrove normalize license labels?

Normalization makes directory-level counting more consistent. It groups comparable recorded labels while preserving the original label in the CSV. The normalized family is editorial metadata, not a legal determination.

What should I do when a listing is Unspecified?

Treat it as a review gap. Look for a repository license file and related project documentation. Do not assume that public access or source visibility grants permission to modify, redistribute, or use the project commercially.

Can these figures be used to describe all MCP servers?

No. They describe the MCPtrove directory snapshot represented by the raw CSV. They do not measure every MCP server, repository, hosted service, or private deployment.