Add Statsig third-party MCP plugin

.cursor-plugin/marketplace.json

@@ -397,6 +397,11 @@
       "name": "excalidraw",
       "source": "third_party/excalidraw",
       "description": "Draw and export hand-drawn diagrams from chat."
+    },
+    {
+      "name": "statsig",
+      "source": "third_party/statsig",
+      "description": "Inspect and manage feature gates, experiments, dynamic configs, and metrics."
     }
   ]
 }

README.md

@@ -80,6 +80,7 @@ Official Cursor plugins for popular developer tools, frameworks, and SaaS produc
 | `meltwater` | [Meltwater](third_party/meltwater/) | Cursor | Integrations | Search media and social mentions and pull analytics. |
 | `daloopa` | [Daloopa](third_party/daloopa/) | Cursor | Integrations | Pull source-linked fundamentals, KPIs, filings, and prices. |
 | `excalidraw` | [Excalidraw](third_party/excalidraw/) | Cursor | Integrations | Draw and export hand-drawn diagrams from chat. |
+| `statsig` | [Statsig](third_party/statsig/) | Cursor | Integrations | Inspect and manage feature gates, experiments, dynamic configs, and metrics. |
 Author values match each plugin’s `plugin.json` `author.name` (Cursor lists `plugins@cursor.com` in the manifest).
 
 ## Repository structure

third_party/statsig/.cursor-plugin/plugin.json

@@ -0,0 +1,35 @@
+{
+  "name": "statsig",
+  "displayName": "Statsig",
+  "version": "1.0.0",
+  "minClientVersions": {
+    "cursor": "3.13.0"
+  },
+  "description": "Inspect and manage feature gates, experiments, dynamic configs, and metrics.",
+  "author": {
+    "name": "Cursor",
+    "email": "plugins@cursor.com"
+  },
+  "homepage": "https://docs.statsig.com/integrations/mcp/cursor",
+  "repository": "https://github.com/cursor/plugins",
+  "license": "MIT",
+  "logo": "assets/logo.png",
+  "keywords": [
+    "statsig",
+    "feature flags",
+    "feature gates",
+    "experiments",
+    "a/b testing",
+    "dynamic configs",
+    "metrics",
+    "mcp"
+  ],
+  "category": "integrations",
+  "tags": [
+    "statsig",
+    "feature-flags",
+    "experimentation",
+    "mcp"
+  ],
+  "mcpServers": "./mcp.json"
+}

third_party/statsig/CHANGELOG.md

@@ -0,0 +1,9 @@
+# Changelog
+
+All notable changes to this plugin will be documented here.
+
+## 1.0.0 — initial release
+
+- Added the `statsig` MCP server pointing at Statsig's hosted Streamable HTTP endpoint (`https://api.statsig.com/v1/mcp`).
+- Auth uses OAuth with Statsig user login — no Console API key or client ID to configure.
+- Logo: Statsig's official mark, from the `statsig-io` GitHub organization.

third_party/statsig/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Cursor
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

third_party/statsig/README.md

@@ -0,0 +1,65 @@
+# Statsig
+
+Cursor plugin that connects agents to [Statsig](https://www.statsig.com) through Statsig's official remote [Model Context Protocol](https://modelcontextprotocol.io/) server.
+
+List and inspect feature gates, experiments, dynamic configs, and metrics in the signed-in Statsig project, pull gate and experiment results, and (with write permissions) create or update gates, experiments, and configs from chat.
+
+Official Cursor setup: https://docs.statsig.com/integrations/mcp/cursor
+
+## Install
+
+1. Open **Cursor Settings → Plugins**.
+2. Search for **Statsig**.
+3. Click **Install**, then complete the Statsig sign-in prompt.
+
+Or run `/add-plugin statsig` in chat.
+
+## MCP
+
+```json
+{
+  "mcpServers": {
+    "statsig": {
+      "type": "http",
+      "url": "https://api.statsig.com/v1/mcp"
+    }
+  }
+}
+```
+
+Auth is OAuth against Statsig. Cursor prompts for Statsig user login when the plugin connects — there is no API key or client ID to configure.
+
+## Before you connect
+
+You need a Statsig account with access to a project. Statsig's MCP OAuth issues a **Personal Console API Key** scoped to your role, so your Statsig org owner must have enabled Personal Console API Key creation for your role under organization settings. If sign-in fails, ask your org owner to enable it.
+
+## What agents can do
+
+| Category | Capabilities |
+| --- | --- |
+| Gates (feature flags) | List gates with type filters (for example stale or permanent), get full gate configuration, pull gate results, view version history, and create or replace gates |
+| Experiments | List experiments by status, creator, or tag; get experiment details; pull overall and dimension results with CUPED and confidence options; view version history; start code cleanup; create or replace experiments |
+| Dynamic configs | List configs, get targeting rules and return values, and create or replace configs |
+| Metrics | List metrics and metric sources and read metric definitions |
+
+The hosted runtime is the source of truth for tool names and schemas.
+
+## Notes
+
+- Tool calls run as the Statsig user who authorizes the connection and cannot exceed that user's role permissions. Read-only roles can use every read tool; write tools require a role with write access.
+- `Update_*_Entirely` tools replace the whole entity — any field left out is removed. Read the entity first and confirm before writing.
+- Statsig also documents an API-key setup that runs `npx mcp-remote` locally with a `statsig-api-key` header. This plugin intentionally packages only the OAuth Streamable HTTP endpoint and does not wrap a local stdio server.
+- Revoke access at any time by deleting the Personal Console API Key from your Statsig project's API keys page.
+
+## Docs
+
+- Statsig MCP in Cursor: https://docs.statsig.com/integrations/mcp/cursor
+- Statsig MCP overview and tool list: https://docs.statsig.com/integrations/mcp/overview
+- Personal Console API Keys: https://docs.statsig.com/access-management/api-keys
+- Server URL: https://api.statsig.com/v1/mcp
+
+Logo is Statsig's official mark, from the `statsig-io` GitHub organization.
+
+## License
+
+MIT

third_party/statsig/mcp.json

@@ -0,0 +1,8 @@
+{
+  "mcpServers": {
+    "statsig": {
+      "type": "http",
+      "url": "https://api.statsig.com/v1/mcp"
+    }
+  }
+}