Mirror the hosted Basecamp plugin's listing fields, and list it for Cursor

.cursor-plugin/marketplace.json

@@ -0,0 +1,17 @@
+{
+  "name": "37signals",
+  "owner": {
+    "name": "37signals",
+    "email": "support@37signals.com"
+  },
+  "metadata": {
+    "description": "37signals plugins for Cursor: Basecamp through its official hosted MCP server"
+  },
+  "plugins": [
+    {
+      "name": "basecamp",
+      "source": "plugins/cursor/basecamp",
+      "description": "Find, read, and update projects, to-dos, cards, messages, docs, and schedules."
+    }
+  ]
+}

README.md

@@ -1,15 +1,27 @@
-# 37signals Claude Code Plugins
+# 37signals agent plugins
 
 [Claude Code plugin](https://docs.anthropic.com/en/docs/claude-code/plugins)
 marketplace for Basecamp, HEY, and Fizzy — skills, hooks, and commands that
 let Claude interact with your 37signals products. We also share our internal
 development skills as plugins.
 
 ```
-claude plugin marketplace add basecamp/claude-plugins
+claude plugin marketplace add basecamp/plugins
 claude plugin install <plugin-name>
 ```
 
+This repository was `basecamp/claude-plugins` until 2026-10-12. GitHub
+redirects the old name, and the marketplace is still `37signals`, so existing
+installs keep working.
+
+## Cursor
+
+`.cursor-plugin/marketplace.json` lists the Basecamp plugin for Cursor,
+`plugins/cursor/basecamp`: Basecamp's official hosted MCP server at
+`https://mcp.basecamp.com/mcp`, with no API key to configure. Cursor's
+Marketplace also feeds Grok Bot. Install it from **Cursor Settings → Plugins**
+once it's listed.
+
 ## Available plugins
 
 | Plugin | Description |
@@ -67,9 +79,10 @@ This repo is mostly a thin marketplace index. Plugin source code (skills,
 hooks, commands) lives in each product's own repo. To contribute, open issues
 or PRs there.
 
-The one plugin with files here, `plugins/basecamp` (the hosted plugin, not
-listed in the marketplace), is a mirror. Its source
-of truth is `plugins/claude/basecamp` in the (private) Basecamp connector
+The plugins with files here, `plugins/basecamp` (the hosted plugin for
+Claude, not listed in the Claude marketplace) and `plugins/cursor/basecamp`
+(the same server for Cursor), are mirrors. Their source of truth is
+`plugins/claude/basecamp` and `plugins/cursor/basecamp` in the (private) Basecamp connector
 repository, which tests it against the tools the connector actually serves.
 Don't edit the mirror; change it upstream, then run
 `bin/sync-basecamp-plugin <checkout>` to copy and validate it, and commit

bin/check-marketplace

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Checks .claude-plugin/marketplace.json. Run by CI on every push and pull request.
+# Checks .claude-plugin/marketplace.json and .cursor-plugin/marketplace.json. Run by CI on every push and pull request.
 #
 # 1. It parses, and every plugin name is unique.
 # 2. A plugin named "basecamp", if listed, has exactly the same source as
@@ -53,3 +53,32 @@ if alias is not None:
 sys.exit(1 if failed else 0)
 PY
 echo "marketplace.json OK"
+
+# Cursor: .cursor-plugin/marketplace.json parses, names are unique, and each
+# source is a folder here whose .cursor-plugin/plugin.json has the same name.
+python3 - "$root" <<'PY'
+import collections, json, os, sys
+
+root = sys.argv[1]
+with open(os.path.join(root, ".cursor-plugin", "marketplace.json")) as f:
+    plugins = json.load(f)["plugins"]
+
+failed = False
+for name, count in collections.Counter(p["name"] for p in plugins).items():
+    if count > 1:
+        print(f"error: Cursor plugin name {name!r} is listed {count} times", file=sys.stderr)
+        failed = True
+for p in plugins:
+    manifest = os.path.join(root, p["source"], ".cursor-plugin", "plugin.json")
+    if not os.path.isfile(manifest):
+        print(f"error: Cursor plugin {p['name']!r}: no {manifest}", file=sys.stderr)
+        failed = True
+        continue
+    with open(manifest) as f:
+        if json.load(f)["name"] != p["name"]:
+            print(f"error: Cursor plugin {p['name']!r}: plugin.json name differs", file=sys.stderr)
+            failed = True
+
+sys.exit(1 if failed else 0)
+PY
+echo "Cursor marketplace.json OK"

bin/sync-basecamp-plugin

@@ -1,12 +1,14 @@
 #!/usr/bin/env bash
-# Mirror the hosted Basecamp plugin from basecamp-mcp-server, its source of truth.
+# Mirror the hosted Basecamp plugins (Claude and Cursor) from basecamp-mcp-server,
+# their source of truth.
 #
 #   bin/sync-basecamp-plugin <basecamp-mcp-server checkout>          copy, validate, print the source commit
 #   bin/sync-basecamp-plugin --check <basecamp-mcp-server checkout>  exit 1 if plugins/basecamp differs
 #
-# The source is plugins/claude/basecamp in that checkout. Sync from a clean
-# checkout of its main branch, and put the printed commit in the commit message.
-# Never edit plugins/basecamp here: change it upstream and sync.
+# The sources are plugins/claude/basecamp and plugins/cursor/basecamp in that
+# checkout, mirrored to plugins/basecamp and plugins/cursor/basecamp. Sync from a
+# clean checkout of its main branch, and put the printed commit in the commit
+# message. Never edit the mirrors here: change them upstream and sync.
 set -euo pipefail
 
 check=0
@@ -22,36 +24,52 @@ fi
 
 root="$(cd "$(dirname "$0")/.." && pwd)"
 upstream="$(cd "$1" && pwd)"
-src="$upstream/plugins/claude/basecamp"
-dest="$root/plugins/basecamp"
 
-if [[ ! -f "$src/.claude-plugin/plugin.json" ]]; then
-  echo "error: $src is not the Basecamp plugin (no .claude-plugin/plugin.json)" >&2
-  exit 2
-fi
+# source (in basecamp-mcp-server) → mirror (here), and the manifest that proves it
+pairs=(
+  "plugins/claude/basecamp:plugins/basecamp:.claude-plugin/plugin.json"
+  "plugins/cursor/basecamp:plugins/cursor/basecamp:.cursor-plugin/plugin.json"
+)
 
-if [[ $check -eq 1 ]]; then
-  if diff -r "$src" "$dest"; then
-    echo "plugins/basecamp matches $(git -C "$upstream" rev-parse --short HEAD)"
-  else
-    echo "plugins/basecamp has drifted from basecamp-mcp-server; run bin/sync-basecamp-plugin" >&2
-    exit 1
+for pair in "${pairs[@]}"; do
+  IFS=: read -r rel dest_rel manifest <<<"$pair"
+  if [[ ! -f "$upstream/$rel/$manifest" ]]; then
+    echo "error: $upstream/$rel is not a Basecamp plugin (no $manifest)" >&2
+    exit 2
   fi
-  exit 0
-fi
+done
 
-if [[ -n "$(git -C "$upstream" status --porcelain -- plugins/claude/basecamp)" ]]; then
-  echo "error: uncommitted changes under $src; sync from a committed source" >&2
-  exit 2
+if [[ $check -eq 1 ]]; then
+  drifted=0
+  for pair in "${pairs[@]}"; do
+    IFS=: read -r rel dest_rel manifest <<<"$pair"
+    if ! diff -r "$upstream/$rel" "$root/$dest_rel"; then
+      echo "$dest_rel has drifted from basecamp-mcp-server; run bin/sync-basecamp-plugin" >&2
+      drifted=1
+    fi
+  done
+  [[ $drifted -eq 0 ]] && echo "mirrors match $(git -C "$upstream" rev-parse --short HEAD)"
+  exit $drifted
 fi
 
-rm -rf "$dest"
-mkdir -p "$dest"
-cp -R "$src/." "$dest/"
-find "$dest" -name .DS_Store -delete
+for pair in "${pairs[@]}"; do
+  IFS=: read -r rel dest_rel manifest <<<"$pair"
+  if [[ -n "$(git -C "$upstream" status --porcelain -- "$rel")" ]]; then
+    echo "error: uncommitted changes under $upstream/$rel; sync from a committed source" >&2
+    exit 2
+  fi
+done
+
+for pair in "${pairs[@]}"; do
+  IFS=: read -r rel dest_rel manifest <<<"$pair"
+  rm -rf "${root:?}/$dest_rel"
+  mkdir -p "$root/$dest_rel"
+  cp -R "$upstream/$rel/." "$root/$dest_rel/"
+  find "$root/$dest_rel" -name .DS_Store -delete
+done
 
 if command -v claude >/dev/null 2>&1; then
-  claude plugin validate "$dest"
+  claude plugin validate "$root/plugins/basecamp"
 else
   echo "claude not installed; skipping claude plugin validate" >&2
 fi

plugins/basecamp/.claude-plugin/plugin.json

@@ -1,16 +1,21 @@
 {
   "name": "basecamp",
   "displayName": "Basecamp",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "Work in your Basecamp projects from Claude: catch up on a project, recap your week, triage your Hey! menu, plan work into to-dos and cards, draft a check-in answer, and prep for a meeting, through Basecamp's own hosted connector.",
   "author": {
     "name": "37signals",
     "email": "support@37signals.com",
     "url": "https://basecamp.com"
   },
-  "homepage": "https://basecamp.com",
-  "repository": "https://github.com/basecamp/claude-plugins",
+  "homepage": "https://basecamp.com/ai",
+  "repository": "https://github.com/basecamp/plugins",
   "license": "MIT",
+  "icon": "./assets/logo.png",
+  "documentationUrl": "https://basecamp.com/ai",
+  "supportUrl": "https://basecamp.com/support",
+  "privacyPolicyUrl": "https://37signals.com/policies/privacy",
+  "termsOfServiceUrl": "https://37signals.com/policies/terms",
   "keywords": [
     "basecamp",
     "projects",

plugins/basecamp/LICENSE

@@ -0,0 +1,24 @@
+MIT License
+
+Copyright (c) 2026 37signals, LLC
+
+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.
+
+The Basecamp name and logo are trademarks of 37signals, LLC and are not
+licensed under this license.

plugins/cursor/basecamp/.cursor-plugin/plugin.json

@@ -0,0 +1,38 @@
+{
+  "name": "basecamp",
+  "displayName": "Basecamp",
+  "version": "0.2.0",
+  "minClientVersions": {
+    "cursor": "3.13.0"
+  },
+  "description": "Find, read, and update projects, to-dos, cards, messages, docs, and schedules.",
+  "author": {
+    "name": "37signals",
+    "email": "support@37signals.com"
+  },
+  "homepage": "https://basecamp.com/ai",
+  "repository": "https://github.com/basecamp/plugins",
+  "license": "MIT",
+  "logo": "assets/logo.png",
+  "keywords": [
+    "basecamp",
+    "37signals",
+    "projects",
+    "to-dos",
+    "todos",
+    "cards",
+    "messages",
+    "campfire",
+    "project management",
+    "productivity",
+    "mcp"
+  ],
+  "category": "integrations",
+  "tags": [
+    "basecamp",
+    "project management",
+    "productivity",
+    "mcp"
+  ],
+  "mcpServers": "./mcp.json"
+}

plugins/cursor/basecamp/LICENSE

@@ -0,0 +1,24 @@
+MIT License
+
+Copyright (c) 2026 37signals, LLC
+
+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.
+
+The Basecamp name and logo are trademarks of 37signals, LLC and are not
+licensed under this license.

plugins/cursor/basecamp/README.md

@@ -0,0 +1,57 @@
+# Basecamp
+
+Cursor plugin that connects agents to [Basecamp](https://basecamp.com) through Basecamp's official remote [Model Context Protocol](https://modelcontextprotocol.io/) server, built and run by 37signals.
+
+Find, read, and update projects, to-dos, cards, messages, comments, documents, schedules, check-ins, and Campfire chats in the signed-in Basecamp account.
+
+## Install
+
+1. Open **Cursor Settings → Plugins**.
+2. Search for **Basecamp**.
+3. Click **Install**, then complete the Basecamp sign-in prompt.
+
+Or run `/add-plugin basecamp` in chat.
+
+## MCP
+
+```json
+{
+  "mcpServers": {
+    "basecamp": {
+      "type": "http",
+      "url": "https://mcp.basecamp.com/mcp",
+      "placement": "server"
+    }
+  }
+}
+```
+
+Auth is OAuth 2.1 with Dynamic Client Registration and PKCE. Cursor registers itself and prompts for Basecamp sign-in when the plugin connects — there is no API key or client ID to configure. On the consent screen you choose the Basecamp account and Read-only or Full access.
+
+## What agents can do
+
+| Category | Capabilities |
+| --- | --- |
+| My work | Assignments, Hey! notifications, schedule, and what's new across projects |
+| To-dos and cards | Create, assign, complete, and move to-dos and Card Table cards |
+| Messages and docs | Read and post messages, comments, and documents |
+| Schedules, check-ins, and chat | Add schedule entries, read and answer check-ins, and read and post in Campfire |
+| Search | `search` across the account and `get_by_url` for any Basecamp link |
+
+Every Basecamp operation is its own tool, annotated read-only, additive (creates) or destructive. The hosted runtime is the source of truth for tool names and schemas.
+
+## Notes
+
+- Tool calls run as the Basecamp person who authorizes the connection, with their permissions.
+- Most removals go to the Basecamp trash, where they can be restored. Permanent deletes ask for confirmation where the client supports it.
+- Disconnect any time from **Connected apps** in your Basecamp profile menu.
+
+## Docs
+
+- Basecamp and AI assistants: https://basecamp.com/ai
+- Server URL: https://mcp.basecamp.com/mcp
+- Basecamp CLI and agent skill: https://github.com/basecamp/basecamp-cli
+
+## License
+
+MIT, © 37signals. The Basecamp name and logo are trademarks of 37signals and aren't licensed under it.

plugins/cursor/basecamp/mcp.json

@@ -0,0 +1,9 @@
+{
+  "mcpServers": {
+    "basecamp": {
+      "type": "http",
+      "url": "https://mcp.basecamp.com/mcp",
+      "placement": "server"
+    }
+  }
+}