Strengthen marketplace validator and remove orphaned test file

- validate-marketplace.ts: check duplicate names and required fields
  (name, description, source) per entry, not just valid JSON
- remove .github/workflows/test-marketplace-check.js: tested a
  checkMarketplaceViolations function that doesn't exist in the PR,
  and was in workflows/ instead of scripts/

.claude-plugin/marketplace.json

@@ -251,6 +251,30 @@
         }
       }
     },
+    {
+      "name": "ruby-lsp",
+      "description": "Ruby language server for code intelligence and analysis",
+      "version": "1.0.0",
+      "author": {
+        "name": "Anthropic",
+        "email": "support@anthropic.com"
+      },
+      "source": "./plugins/ruby-lsp",
+      "category": "development",
+      "strict": false,
+      "lspServers": {
+        "ruby-lsp": {
+          "command": "ruby-lsp",
+          "extensionToLanguage": {
+            ".rb": "ruby",
+            ".rake": "ruby",
+            ".gemspec": "ruby",
+            ".ru": "ruby",
+            ".erb": "erb"
+          }
+        }
+      }
+    },
     {
       "name": "agent-sdk-dev",
       "description": "Development kit for working with the Claude Agent SDK",
@@ -680,10 +704,33 @@
       "description": "Semgrep catches security vulnerabilities in real-time and guides Claude to write secure code from the start.",
       "category": "security",
       "source": {
-        "source": "url",
-        "url": "https://github.com/semgrep/mcp-marketplace.git"
+        "source": "git-subdir",
+        "url": "https://github.com/semgrep/mcp-marketplace.git",
+        "path": "plugin"
       },
       "homepage": "https://github.com/semgrep/mcp-marketplace.git"
+    },
+    {
+      "name": "pagerduty",
+      "description": "Enhance code quality and security through PagerDuty risk scoring and incident correlation. Score pre-commit diffs against historical incident data and surface deployment risk before you ship.",
+      "category": "monitoring",
+      "source": {
+        "source": "url",
+        "url": "https://github.com/PagerDuty/claude-code-plugins.git",
+        "sha": "b16c23e0d790deceaa7a6182616d0e36673f2eae"
+      },
+      "homepage": "https://github.com/PagerDuty/claude-code-plugins"
+    },
+    {
+      "name": "postman",
+      "description": "Full API lifecycle management for Claude Code. Sync collections, generate client code, discover APIs, run tests, create mocks, publish docs, and audit security. Powered by the Postman MCP Server.",
+      "category": "development",
+      "source": {
+        "source": "url",
+        "url": "https://github.com/Postman-Devrel/postman-claude-code-plugin.git",
+        "sha": "0714280351c1a137e79aad465a66730511ffbd57"
+      },
+      "homepage": "https://learning.postman.com/docs/developer/postman-mcp-server/"
     }
   ]
 }

.github/scripts/validate-marketplace.ts

@@ -0,0 +1,77 @@
+#!/usr/bin/env bun
+/**
+ * Validates marketplace.json: well-formed JSON, plugins array present,
+ * each entry has required fields, and no duplicate plugin names.
+ *
+ * Usage:
+ *   bun validate-marketplace.ts <path-to-marketplace.json>
+ */
+
+import { readFile } from "fs/promises";
+
+async function main() {
+  const filePath = process.argv[2];
+  if (!filePath) {
+    console.error("Usage: validate-marketplace.ts <path-to-marketplace.json>");
+    process.exit(2);
+  }
+
+  const content = await readFile(filePath, "utf-8");
+
+  let parsed: unknown;
+  try {
+    parsed = JSON.parse(content);
+  } catch (err) {
+    console.error(
+      `ERROR: ${filePath} is not valid JSON: ${err instanceof Error ? err.message : err}`
+    );
+    process.exit(1);
+  }
+
+  if (!parsed || typeof parsed !== "object" || Array.isArray(parsed)) {
+    console.error(`ERROR: ${filePath} must be a JSON object`);
+    process.exit(1);
+  }
+
+  const marketplace = parsed as Record<string, unknown>;
+  if (!Array.isArray(marketplace.plugins)) {
+    console.error(`ERROR: ${filePath} missing "plugins" array`);
+    process.exit(1);
+  }
+
+  const errors: string[] = [];
+  const seen = new Set<string>();
+  const required = ["name", "description", "source"] as const;
+
+  marketplace.plugins.forEach((p, i) => {
+    if (!p || typeof p !== "object") {
+      errors.push(`plugins[${i}]: must be an object`);
+      return;
+    }
+    const entry = p as Record<string, unknown>;
+    for (const field of required) {
+      if (!entry[field]) {
+        errors.push(`plugins[${i}] (${entry.name ?? "?"}): missing required field "${field}"`);
+      }
+    }
+    if (typeof entry.name === "string") {
+      if (seen.has(entry.name)) {
+        errors.push(`plugins[${i}]: duplicate plugin name "${entry.name}"`);
+      }
+      seen.add(entry.name);
+    }
+  });
+
+  if (errors.length) {
+    console.error(`ERROR: ${filePath} has ${errors.length} validation error(s):`);
+    for (const e of errors) console.error(`  - ${e}`);
+    process.exit(1);
+  }
+
+  console.log(`OK: ${marketplace.plugins.length} plugins, no duplicates, all required fields present`);
+}
+
+main().catch((err) => {
+  console.error("Fatal error:", err);
+  process.exit(2);
+});

.github/workflows/close-external-prs.yml

@@ -36,7 +36,7 @@ jobs:
               owner: context.repo.owner,
               repo: context.repo.repo,
               issue_number: context.payload.pull_request.number,
-              body: `Thanks for your interest! This repo only accepts contributions from Anthropic team members. If you'd like to submit a plugin to the marketplace, please submit your plugin [here](https://docs.google.com/forms/d/e/1FAIpQLSdeFthxvjOXUjxg1i3KrOOkEPDJtn71XC-KjmQlxNP63xYydg/viewform).`
+              body: `Thanks for your interest! This repo only accepts contributions from Anthropic team members. If you'd like to submit a plugin to the marketplace, please submit your plugin [here](https://clau.de/plugin-directory-submission).`
             });
 
             await github.rest.pulls.update({

.github/workflows/validate-marketplace.yml

@@ -0,0 +1,17 @@
+name: Validate Marketplace JSON
+
+on:
+  pull_request:
+    paths:
+      - '.claude-plugin/marketplace.json'
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: oven-sh/setup-bun@v2
+
+      - name: Validate marketplace.json
+        run: bun .github/scripts/validate-marketplace.ts .claude-plugin/marketplace.json

plugins/ralph-loop/hooks/stop-hook.sh

@@ -24,6 +24,16 @@ MAX_ITERATIONS=$(echo "$FRONTMATTER" | grep '^max_iterations:' | sed 's/max_iter
 # Extract completion_promise and strip surrounding quotes if present
 COMPLETION_PROMISE=$(echo "$FRONTMATTER" | grep '^completion_promise:' | sed 's/completion_promise: *//' | sed 's/^"\(.*\)"$/\1/')
 
+# Session isolation: the state file is project-scoped, but the Stop hook
+# fires in every Claude Code session in that project. If another session
+# started the loop, this session must not block (or touch the state file).
+# Legacy state files without session_id fall through (preserves old behavior).
+STATE_SESSION=$(echo "$FRONTMATTER" | grep '^session_id:' | sed 's/session_id: *//' || true)
+HOOK_SESSION=$(echo "$HOOK_INPUT" | jq -r '.session_id // ""')
+if [[ -n "$STATE_SESSION" ]] && [[ "$STATE_SESSION" != "$HOOK_SESSION" ]]; then
+  exit 0
+fi
+
 # Validate numeric fields before arithmetic operations
 if [[ ! "$ITERATION" =~ ^[0-9]+$ ]]; then
   echo "⚠️  Ralph loop: State file corrupted" >&2
@@ -77,35 +87,39 @@ if ! grep -q '"role":"assistant"' "$TRANSCRIPT_PATH"; then
   exit 0
 fi
 
-# Extract last assistant message with explicit error handling
-LAST_LINE=$(grep '"role":"assistant"' "$TRANSCRIPT_PATH" | tail -1)
-if [[ -z "$LAST_LINE" ]]; then
-  echo "⚠️  Ralph loop: Failed to extract last assistant message" >&2
+# Extract the most recent assistant text block.
+#
+# Claude Code writes each content block (text/tool_use/thinking) as its own
+# JSONL line, all with role=assistant. So slurp the last N assistant lines,
+# flatten to text blocks only, and take the last one.
+#
+# Capped at the last 100 assistant lines to keep jq's slurp input bounded
+# for long-running sessions.
+LAST_LINES=$(grep '"role":"assistant"' "$TRANSCRIPT_PATH" | tail -n 100)
+if [[ -z "$LAST_LINES" ]]; then
+  echo "⚠️  Ralph loop: Failed to extract assistant messages" >&2
   echo "   Ralph loop is stopping." >&2
   rm "$RALPH_STATE_FILE"
   exit 0
 fi
 
-# Parse JSON with error handling
-LAST_OUTPUT=$(echo "$LAST_LINE" | jq -r '
-  .message.content |
-  map(select(.type == "text")) |
-  map(.text) |
-  join("\n")
+# Parse the recent lines and pull out the final text block.
+# `last // ""` yields empty string when no text blocks exist (e.g. a turn
+# that is all tool calls). That's fine: empty text means no <promise> tag,
+# so the loop simply continues.
+# (Briefly disable errexit so a jq failure can be caught by the $? check.)
+set +e
+LAST_OUTPUT=$(echo "$LAST_LINES" | jq -rs '
+  map(.message.content[]? | select(.type == "text") | .text) | last // ""
 ' 2>&1)
+JQ_EXIT=$?
+set -e
 
 # Check if jq succeeded
-if [[ $? -ne 0 ]]; then
+if [[ $JQ_EXIT -ne 0 ]]; then
   echo "⚠️  Ralph loop: Failed to parse assistant message JSON" >&2
   echo "   Error: $LAST_OUTPUT" >&2
-  echo "   This may indicate a transcript format issue" >&2
-  echo "   Ralph loop is stopping." >&2
-  rm "$RALPH_STATE_FILE"
-  exit 0
-fi
-
-if [[ -z "$LAST_OUTPUT" ]]; then
-  echo "⚠️  Ralph loop: Assistant message contained no text content" >&2
+  echo "   This may indicate a transcript format issue." >&2
   echo "   Ralph loop is stopping." >&2
   rm "$RALPH_STATE_FILE"
   exit 0

plugins/ralph-loop/scripts/setup-ralph-loop.sh

@@ -141,6 +141,7 @@ cat > .claude/ralph-loop.local.md <<EOF
 ---
 active: true
 iteration: 1
+session_id: ${CLAUDE_CODE_SESSION_ID:-}
 max_iterations: $MAX_ITERATIONS
 completion_promise: $COMPLETION_PROMISE_YAML
 started_at: "$(date -u +%Y-%m-%dT%H:%M:%SZ)"

plugins/ruby-lsp/README.md

@@ -0,0 +1,31 @@
+# ruby-lsp
+
+Ruby language server for Claude Code, providing code intelligence and analysis.
+
+## Supported Extensions
+`.rb`, `.rake`, `.gemspec`, `.ru`, `.erb`
+
+## Installation
+
+### Via gem (recommended)
+```bash
+gem install ruby-lsp
+```
+
+### Via Bundler
+Add to your Gemfile:
+```ruby
+gem 'ruby-lsp', group: :development
+```
+
+Then run:
+```bash
+bundle install
+```
+
+## Requirements
+- Ruby 3.0 or later
+
+## More Information
+- [Ruby LSP Website](https://shopify.github.io/ruby-lsp/)
+- [GitHub Repository](https://github.com/Shopify/ruby-lsp)