Datasets:

PolicyLayer
/

mcp-server-catalogue

@@ -26,10 +26,10 @@ configs:
 A risk-classified catalogue of every Model Context Protocol (MCP) server reachable through the public registries. Each tool exposed by each server is classified into one of six risk categories using a verb-based classifier with input-schema heuristics.
-**1,787 servers · 25,329 tools · classified May 2026 · refreshed monthly.**
 The catalogue is the underlying dataset for PolicyLayer's research report,
-[*The State of MCP Security — May 2026*](https://policylayer.com/research/state-of-mcp-2026).
 ---
@@ -111,7 +111,7 @@ One row per tool exposed by a server in the `servers` split.
 | `Other` | Does not fit the above categories. | varies |
 Classification is verb-based with input-schema heuristics. Methodology details and known failure modes are documented in the
-[research report](https://policylayer.com/research/state-of-mcp-2026#methodology).
 ---
@@ -119,8 +119,8 @@ Classification is verb-based with input-schema heuristics. Methodology details a
 - **Public registries only.** The dataset covers servers reachable through the official Model Context Protocol registry, npm, Smithery, and Glama. Private and self-hosted servers are not represented.
 - **Lower bound.** Some registry-listed servers are unreachable through the scan pipeline (broken installs, dependency failures, or auth-walled launchers) and are excluded. The dataset is therefore a lower bound on the real ecosystem.
-- **Static snapshot.** This release is the May 2026 edition. New monthly versions are released on the 1st of each month.
-- **Classifier confidence varies.** 72.3% of tool classifications are high-confidence and 15.4% are verified. The remaining 12.3% are medium or low confidence and should be treated as advisory rather than authoritative for downstream risk decisions.
 - **Usage metrics are point-in-time.** `npm_weekly_downloads` reflects the week immediately before the snapshot. `github_*` fields reflect the GitHub repository state at fetch time. Metrics are null where the server is not on npm, has no GitHub repo, or the upstream API rate-limited the fetch.
 ---
@@ -130,8 +130,8 @@ Classification is verb-based with input-schema heuristics. Methodology details a
 If you use this dataset in research or commentary, please cite the research report:
 ```
-PolicyLayer. (2026). The State of MCP Security — May 2026.
-https://policylayer.com/research/state-of-mcp-2026
 ```
 For the dataset itself:
@@ -149,13 +149,14 @@ The catalogue is regenerated monthly from PolicyLayer's continuously-updated sca
 | Edition | Tag | Servers | Tools |
 |---|---|---:|---:|
 | May 2026 | `2026-05` | 1,787 | 25,329 |
 ---
 ## Related
-- **Research report:** [The State of MCP Security — May 2026](https://policylayer.com/research/state-of-mcp-2026)
 - **Public tool catalogue:** [policylayer.com/tools](https://policylayer.com/tools) — browse classifications by server.
 - **MCP attack database:** [policylayer.com/attacks](https://policylayer.com/attacks) — documented MCP incidents and attack patterns.
 - **PolicyLayer:** [policylayer.com](https://policylayer.com) — the MCP control plane (gateway, policy engine, audit log) for production agent fleets.

 A risk-classified catalogue of every Model Context Protocol (MCP) server reachable through the public registries. Each tool exposed by each server is classified into one of six risk categories using a verb-based classifier with input-schema heuristics.
+**2,031 servers · 31,000 tools · classified June 2026 · refreshed monthly.**
 The catalogue is the underlying dataset for PolicyLayer's research report,
+[*The State of MCP Security — June 2026*](https://policylayer.com/research/state-of-mcp).
 ---
 | `Other` | Does not fit the above categories. | varies |
 Classification is verb-based with input-schema heuristics. Methodology details and known failure modes are documented in the
+[research report](https://policylayer.com/research/state-of-mcp#methodology).
 ---
 - **Public registries only.** The dataset covers servers reachable through the official Model Context Protocol registry, npm, Smithery, and Glama. Private and self-hosted servers are not represented.
 - **Lower bound.** Some registry-listed servers are unreachable through the scan pipeline (broken installs, dependency failures, or auth-walled launchers) and are excluded. The dataset is therefore a lower bound on the real ecosystem.
+- **Static snapshot.** This release is the June 2026 edition. New monthly versions are released on the 1st of each month.
+- **Classifier confidence varies.** 74.5% of tool classifications are high-confidence and 12.5% are verified. The remaining 12.9% are medium or low confidence and should be treated as advisory rather than authoritative for downstream risk decisions.
 - **Usage metrics are point-in-time.** `npm_weekly_downloads` reflects the week immediately before the snapshot. `github_*` fields reflect the GitHub repository state at fetch time. Metrics are null where the server is not on npm, has no GitHub repo, or the upstream API rate-limited the fetch.
 ---
 If you use this dataset in research or commentary, please cite the research report:
 ```
+PolicyLayer. (2026). The State of MCP Security — June 2026.
+https://policylayer.com/research/state-of-mcp
 ```
 For the dataset itself:
 | Edition | Tag | Servers | Tools |
 |---|---|---:|---:|
+| June 2026 | `2026-06` | 2,031 | 31,000 |
 | May 2026 | `2026-05` | 1,787 | 25,329 |
 ---
 ## Related
+- **Research report:** [The State of MCP Security — June 2026](https://policylayer.com/research/state-of-mcp)
 - **Public tool catalogue:** [policylayer.com/tools](https://policylayer.com/tools) — browse classifications by server.
 - **MCP attack database:** [policylayer.com/attacks](https://policylayer.com/attacks) — documented MCP incidents and attack patterns.
 - **PolicyLayer:** [policylayer.com](https://policylayer.com) — the MCP control plane (gateway, policy engine, audit log) for production agent fleets.

servers.jsonl CHANGED Viewed

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tools.jsonl CHANGED Viewed

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