Add /add-registry slash command and new cookbook entries

- Add Claude Code slash command to help contributors add notebooks to registry.yaml
- Update PR template with checklist item for registry entries
- Add new cookbook entries: crop tool, programmatic tool calling, tool search, automatic context compaction, ElevenLabs voice assistant

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: PedramNavid

.claude/commands/add-registry.md

@@ -0,0 +1,72 @@
+---
+allowed-tools: Read,Glob,Grep,Edit
+description: Add a new notebook to registry.yaml
+---
+
+Add a new entry to `registry.yaml` for the notebook specified in the prompt above.
+
+## Instructions
+
+1. **Read the notebook** at the specified path to understand its content
+2. **Check author exists** in `authors.yaml`:
+   - Ask the user for the GitHub username of the notebook author
+   - Read `authors.yaml` and check if that username exists as a key
+   - If the author does NOT exist, ask the user for their details and add them to `authors.yaml`:
+     - **name**: Full display name
+     - **website**: GitHub profile URL or personal website
+     - **avatar**: Use `https://github.com/<username>.png` as default
+3. **Generate the registry entry** with these fields:
+
+### Required Fields
+- **title**: Extract from the notebook's first heading or create a concise, descriptive title
+- **description**: Write a brief 1-2 sentence description summarizing what the notebook teaches
+- **path**: The notebook path relative to the repository root
+- **authors**: Use the GitHub username from step 2
+- **date**: Use today's date in YYYY-MM-DD format
+- **categories**: Select 1-2 appropriate categories from this list:
+  - Agent Patterns
+  - Claude Agent SDK
+  - Evals
+  - Fine-Tuning
+  - Multimodal
+  - Integrations
+  - Observability
+  - RAG & Retrieval
+  - Responses
+  - Skills
+  - Thinking
+  - Tools
+
+### Style Guidelines
+- Title should be concise but descriptive (see existing entries for examples)
+- Description should be ~15-20 words, focusing on what the user will learn/build
+- Choose categories that best match the notebook's primary focus
+
+## Output
+
+1. If author is new, show the proposed `authors.yaml` entry for review and add it after approval
+2. Show the user the proposed `registry.yaml` entry for review
+3. After user approval, use the Edit tool to append the entry to `registry.yaml`
+4. Maintain alphabetical ordering by path within the file, or append to the end if unclear
+
+## Example Entry Formats
+
+### authors.yaml (only if new author)
+```yaml
+github-username:
+  name: Full Name
+  website: https://github.com/github-username
+  avatar: https://github.com/github-username.png
+```
+
+### registry.yaml
+```yaml
+- title: Example Notebook Title
+  description: Brief description of what this notebook covers and teaches users.
+  path: category/notebook_name.ipynb
+  authors:
+  - github-username
+  date: 'YYYY-MM-DD'
+  categories:
+  - Category Name
+```

.github/pull_request_template.md

@@ -24,6 +24,7 @@
 - [ ] Includes a problem statement or use case description
 - [ ] Code is well-commented and easy to follow
 - [ ] Includes expected outputs or results
+- [ ] Added entry to `registry.yaml` (run `/add-registry <notebook-path>` or add manually)
 
 ## Testing
 

registry.yaml

@@ -1,4 +1,50 @@
 # yaml-language-server: $schema=./.github/registry_schema.json
+- title: Giving Claude a Crop Tool for Better Image Analysis
+  description: Give Claude a crop tool to zoom into image regions for detailed analysis
+    of charts, documents, and diagrams.
+  path: multimodal/crop_tool.ipynb
+  authors:
+  - nadine-anthropic
+  date: '2025-11-22'
+  categories:
+  - Multimodal
+  - Tools
+- title: Programmatic Tool Calling (PTC)
+  description: Reduce latency and token consumption by letting Claude write code that
+    calls tools programmatically in the code execution environment.
+  path: tool_use/programmatic_tool_calling_ptc.ipynb
+  authors:
+  - PedramNavid
+  date: '2025-11-24'
+  categories:
+  - Tools
+- title: Tool Search with Embeddings
+  description: Scale Claude applications to thousands of tools using semantic embeddings
+    for dynamic tool discovery.
+  path: tool_use/tool_search_with_embeddings.ipynb
+  authors:
+  - henrykeetay
+  date: '2025-11-24'
+  categories:
+  - Tools
+- title: Automatic Context Compaction
+  description: Manage context limits in long-running agentic workflows by automatically
+    compressing conversation history.
+  path: tool_use/automatic-context-compaction.ipynb
+  authors:
+  - PedramNavid
+  date: '2025-11-24'
+  categories:
+  - Tools
+- title: Low Latency Voice Assistant with ElevenLabs
+  description: Build a low-latency voice assistant using ElevenLabs for speech-to-text
+    and text-to-speech combined with Claude.
+  path: third_party/ElevenLabs/low_latency_stt_claude_tts.ipynb
+  authors:
+  - Adriaan-ANT
+  date: '2025-11-24'
+  categories:
+  - Integrations
 - title: Prompting for Frontend Aesthetics
   description: Guide to prompting Claude for distinctive, polished frontend designs
     avoiding generic aesthetics.
@@ -523,3 +569,4 @@
   categories:
   - Multimodal
   - Tools
+