EchoKit Config Generator

EchoKit Config Generator

Overview

This SKILL generates config.toml files for EchoKit servers through an interactive five-phase process that includes configuration generation, API key entry, and server launch.

Announce at start: "I'm using the EchoKit Config Generator to create your config.toml."

Handling User Input

Throughout this SKILL, when asking questions with default values:

Always phrase it as: "Question? (default: {VALUE})"

Handle responses:

• Empty response or Enter → Use the default value
• User provides value → Use user's value
• User enters "default" → Use the default value explicitly

Example:

AI: How many messages should it remember? (default: 5)
User: [Enter]
AI: [Uses 5]

AI: How many messages should it remember? (default: 5)
User: 10
AI: [Uses 10]

This applies to ALL questions with defaults throughout the SKILL.

Phase 1: Assistant Definition

Ask these questions one at a time:

1. "What is your AI assistant's primary purpose? (Describe in 1-2 sentences)"
2. "What tone should it have? (professional, casual, friendly, expert, or describe your own)"
3. "What specific capabilities should it have?"
   • Prompt with examples if needed: "code generation", "data analysis", "creative writing", "problem-solving", "teaching", etc.
4. "Any response format requirements?"
   • Examples: "short answers", "detailed explanations", "step-by-step", "conversational", "formal reports"
5. "Any domain-specific knowledge areas?" (Optional)
   • Examples: "programming", "medicine", "law", "finance", etc.
6. "Any constraints or guidelines?" (Optional)
   • Examples: "no bullet points", "always cite sources", "avoid jargon", "max 3 sentences"
7. "Any additional instructions or preferences?" (Optional)

Generate sophisticated system prompt using this structure:

[[llm.sys_prompts]]
role = "system"
content = """
You are a {TONE} AI assistant specialized in {PURPOSE}.

## Core Purpose
{PURPOSE_EXPANDED - elaborate based on user input}

## Your Capabilities
- List the capabilities provided by user
- Each capability on its own line
- Be specific about what you can do

## Response Style
{FORMAT_REQUIREMENTS}

## Domain Knowledge
{DOMAIN_KNOWLEDGE if provided, otherwise omit this section}

## Behavioral Guidelines
{BEHAVIORS_FROM_USER}
- Add any relevant default behaviors based on tone

## Constraints
{CONSTRAINTS_FROM_USER}
- Always maintain {TONE} tone
- {RESPONSE_FORMAT_RULES}

## Additional Instructions
{ADDITIONAL_NOTES if provided}

---
Remember: Stay in character as a {TONE} {DOMAIN} assistant. Always prioritize helpfulness and accuracy.
"""

Enhanced defaults based on tone:

If user doesn't provide specific behaviors, use these expanded defaults:

• professional:

  • Provide accurate, well-researched information
  • Maintain formal, business-appropriate language
  • Acknowledge limitations and uncertainty
  • Structure responses logically

• casual:

  • Be conversational and engaging
  • Use natural, relaxed language
  • Show personality when appropriate
  • Keep interactions friendly and approachable

• friendly:

  • Be warm and welcoming
  • Use simple, clear language
  • Show empathy and understanding
  • Make users feel comfortable

• expert:

  • Provide comprehensive technical details
  • Cite sources and references when relevant
  • Explain trade-offs and alternatives
  • Use appropriate terminology correctly
  • Acknowledge edge cases and limitations

Phase 2: Platform Selection

For each service category (ASR, TTS, LLM):

1. Read platform data from platforms/{category}.yml using the Read tool
2. Display available options with this format:

Available {SERVICE} Services:

1. {PLATFORM_1.name}
   URL: {PLATFORM_1.url}
   Model: {PLATFORM_1.model}
   Get API key: {PLATFORM_1.api_key_url}
   Notes: {PLATFORM_1.notes}

2. {PLATFORM_2.name}
   URL: {PLATFORM_2.url}
   Model: {PLATFORM_2.model}
   Get API key: {PLATFORM_2.api_key_url}
   Notes: {PLATFORM_2.notes}

C. Custom - Specify your own platform/model

Your choice (1-{N} or C):

3. User selection:

   If user selects a number (1-{N}):

   • Store the selected platform data from the YAML file
   • Continue to next service

   If user selects 'C' (Custom):

   Step 1: Get platform name

   • Ask: "What's the platform name?" (e.g., "groq", "deepseek", "mistral", "together")

   Step 2: Auto-fetch API information

   • Use WebSearch to find API documentation
   • Search query: "{PLATFORM_NAME} API endpoint {SERVICE_TYPE} 2025"
     • For ASR: "speech to text API", "transcription API"
     • For TTS: "text to speech API"
     • For LLM: "chat completions API", "LLM API"
   • Extract from search results:
     • API endpoint URL
     • API documentation URL
     • Authentication method
     • Default model names

   Step 3: Confirm with user Display what was found:

   I found the following for {PLATFORM_NAME} {SERVICE}:
   
   API Endpoint: {FOUND_URL}
   Documentation: {FOUND_DOCS_URL}
   Authentication: {FOUND_AUTH_METHOD}
   Default Models: {FOUND_MODELS}
   
   Is this correct? (y/edit)
   

   Step 4: Gather additional details

   • Ask: "What model should I use? (suggested: {FOUND_MODELS} or enter custom)"
   • Ask for additional settings:
     • LLM: "How many messages should it remember? (default: 5)"
     • TTS: "What voice should it use? (default: default)"
     • ASR: "What language? (default: en)"

   Step 5: Store custom platform

   name: "{PLATFORM_NAME}"
   platform: "{INFERRED_TYPE from API docs or user}"
   url: "{CONFIRMED_URL}"
   model: "{USER_MODEL_CHOICE}"
   history/voice/lang: {USER_SETTINGS}
   api_key_url: "{FOUND_DOCS_URL}"
   notes: "Custom {PLATFORM_NAME} - auto-configured"
   

4. Continue to next service

Load platforms in order:

1. ASR from platforms/asr.yml
2. TTS from platforms/tts.yml
3. LLM from platforms/llm.yml

Note on WebSearch: Use WebSearch tool with year-specific queries (2025) to get current API information. For common platforms, you can also infer from patterns:

• OpenAI-compatible: https://api.{platform}.com/v1/chat/completions
• Anthropic-compatible: https://api.{platform}.com/v1/messages
• Together/Groq: OpenAI-compatible format

Phase 3: MCP Server (Optional)

Ask: "Do you need an MCP server? (y/n)"

If yes, ask: "What's your MCP server URL?"

Default: http://localhost:8000/mcp

Add MCP configuration to LLM section:

The MCP server is configured within the LLM configuration as:

[[llm.mcp_server]]
server = "{USER_PROVIDED_URL or http://localhost:8000/mcp}"
type = "http_streamable"
call_mcp_message = "Please hold on a few seconds while I am searching for an answer!"

Explain to user:

• The MCP server will be added to the LLM section
• type can be: "http_streamable" or "http"
• call_mcp_message is shown to users when MCP is being called

Phase 4: Generate Files

Step 1: Preview config.toml

IMPORTANT: EchoKit server requires a specific TOML structure:

• Section order MUST be: [tts] → [asr] → [llm]
• No comments allowed at the beginning of the file
• Field names vary by platform (check platform-specific requirements)

Display complete configuration with this format:

addr = "0.0.0.0:8080"
hello_wav = "hello.wav"

[tts]
platform = "{SELECTED_TTS.platform}"
url = "{SELECTED_TTS.url}"
{TTS_API_KEY_FIELD} = "YOUR_API_KEY_HERE"
{TTS_MODEL_FIELD} = "{SELECTED_TTS.model}"
voice = "{SELECTED_TTS.voice}"

[asr]
platform = "{SELECTED_ASR.platform}"
url = "{SELECTED_ASR.url}"
{ASR_API_KEY_FIELD} = "YOUR_API_KEY_HERE"
model = "{SELECTED_ASR.model}"
lang = "{ASR_LANG}"
prompt = "Hello\\n你好\\n(noise)\\n(bgm)\\n(silence)\\n"
vad_url = "http://localhost:9093/v1/audio/vad"

[llm]
platform = "{SELECTED_LLM.platform}"
url = "{SELECTED_LLM.url}"
{LLM_API_KEY_FIELD} = "YOUR_API_KEY_HERE"
model = "{SELECTED_LLM.model}"
history = {SELECTED_LLM.history}

{GENERATED_SYSTEM_PROMPT}

{MCP_CONFIGURATION if enabled}

Platform-specific field mappings:

TTS platforms:

• openai: uses api_key and model
• elevenlabs: uses token and model_id
• groq: uses api_key and model

ASR platforms:

• openai/whisper: uses api_key and model

LLM platforms:

• openai_chat: uses api_key (optional, can be empty string)

When generating the config, replace {TTS_API_KEY_FIELD}, {ASR_API_KEY_FIELD}, and {LLM_API_KEY_FIELD} with the appropriate field name for the selected platform:

• For ElevenLabs TTS: use token
• For OpenAI/Groq TTS: use api_key
• For Whisper ASR: use api_key
• For OpenAI Chat LLM: use api_key

Step 2: Ask for confirmation

"Does this configuration look correct? (y/edit/regenerate)"

• y - Proceed to write files
• e - Ask which section to edit (asr/tts/llm/system_prompt)
• r - Restart from Phase 1

Step 3: Determine output location

Ask: "Where should I save the config files? (press Enter for default: echokit_server/)"

Handle user input:

• Empty/Enter → Use default: echokit_server/
• Custom path → Use user-provided path
• Relative path → Use as-is (e.g., my_configs/)
• Absolute path → Use as-is (e.g., /Users/username/echokit/)

After path is determined:

1. Check if directory exists
2. If not, ask: "Directory '{OUTPUT_DIR}' doesn't exist. Create it? (y/n)"
   • If y: Create with mkdir -p {OUTPUT_DIR}
   • If n: Ask for different path
3. Verify write permissions
   • Test by attempting to create a temporary file
   • If fails, ask for different location

Step 4: Write files

Use the Write tool to create:

1. {OUTPUT_DIR}/config.toml - Main configuration (includes MCP server if enabled)
2. {OUTPUT_DIR}/SETUP_GUIDE.md - Setup instructions (use template from templates/SETUP_GUIDE.md)

Step 5: Display success message

✓ Configuration generated successfully!

Files created:
  {OUTPUT_DIR}/config.toml
  {OUTPUT_DIR}/SETUP_GUIDE.md

Now proceeding to Phase 5: API Key Entry and Server Launch...

Phase 5: API Key Entry and Server Launch

Overview

This phase collects API keys from the user, updates the config.toml file, builds the server (if needed), and launches it.

Step 1: Display API key URLs

Show the user where to get their API keys:

## Phase 5: API Key Entry and Server Launch

You'll need API keys for your selected services. Here's where to get them:

ASR ({SELECTED_ASR.name}):
  API Key URL: {SELECTED_ASR.api_key_url}

TTS ({SELECTED_TTS.name}):
  API Key URL: {SELECTED_TTS.api_key_url}

LLM ({SELECTED_LLM.name}):
  API Key URL: {SELECTED_LLM.api_key_url}

I'll prompt you for each key. You can also press Enter to skip and manually edit config.toml later.

Step 2: Collect API keys

For each service (ASR, TTS, LLM), ask:

Enter your {SERVICE_NAME} API key:
(or press Enter to skip and add it manually later)

Handle responses:

• User provides a key → Store it for updating config.toml
• Empty/Enter → Keep "YOUR_API_KEY_HERE" placeholder

Store keys temporarily in memory:

ASR_API_KEY = "{user_input or 'YOUR_API_KEY_HERE'}"
TTS_API_KEY = "{user_input or 'YOUR_API_KEY_HERE'}"
LLM_API_KEY = "{user_input or 'YOUR_API_KEY_HERE'}"

Step 3: Update config.toml with API keys

Read the existing config.toml using the Read tool, then replace the API key placeholders:

[asr]
api_key = "{ASR_API_KEY}"

[tts]
{CORRECT_TTS_FIELD} = "{TTS_API_KEY}"

[llm]
api_key = "{LLM_API_KEY}"

Use the Edit tool to update each API key field line in {OUTPUT_DIR}/config.toml.

IMPORTANT - Platform-specific field names:

• ElevenLabs TTS: uses token (not api_key) and model_id (not model)
• OpenAI/Groq TTS: uses api_key and model
• Whisper ASR: uses api_key
• OpenAI Chat LLM: uses api_key

Make sure to preserve the correct field names for each platform when editing!

Step 4: Verify server installation

Check if the EchoKit server is already built:

1. Check if {OUTPUT_DIR}/target/release/echokit_server exists
2. If it exists, skip to Step 6

If not built, ask: "The EchoKit server needs to be built. Do you want me to build it now? (y/n)"

Step 5: Build the server (if needed)

If user said yes in Step 4:

1. Change to the output directory: cd {OUTPUT_DIR}
2. Run: cargo build --release
3. Monitor build output for errors

If build succeeds:

✓ Server built successfully at {OUTPUT_DIR}/target/release/echokit_server

If build fails:

✗ Build failed. Please check the error messages above.

You can manually build the server later with:
  cd {OUTPUT_DIR} && cargo build --release

For now, your config.toml has been saved with your API keys.

• End here - don't proceed to server launch

Step 6: Launch the server

If the server is available (either pre-built or just built):

Ask: "Ready to launch the EchoKit server? (y/n)"

If no:

Your config.toml has been saved with your API keys.

To run the server manually:
  cd {OUTPUT_DIR} && ./target/release/echokit_server

• End here

If yes:

1. Change to output directory: cd {OUTPUT_DIR}
2. Enable debug logging and launch server in background:

   export RUST_LOG=debug
   ./target/release/echokit_server &
   

3. Store the process ID for potential later management
4. Get the actual local IP address by running:

   # Try multiple methods to get IP, use first successful result
   ipconfig getifaddr en0 2>/dev/null || \
   ipconfig getifaddr en1 2>/dev/null || \
   hostname -I 2>/dev/null | awk '{print $1}' || \
   ifconfig | grep "inet " | grep -v 127.0.0.1 | awk '{print $2}' | head -1
   

5. Store the result as LOCAL_IP
6. Display success message with WebSocket URLs:

✓ EchoKit server is now running!

Server Details:
  Location: {OUTPUT_DIR}
  Config: {OUTPUT_DIR}/config.toml
  Bind Address: 0.0.0.0:8080

WebSocket URL: ws://{ACTUAL_LOCAL_IP}:8080/ws

You can connect to the server using any WebSocket client at this URL.

The server is running in the background.

To stop the server later:
  - Find the process: ps aux | grep echokit_server
  - Kill it: kill {PID}

Or if you have the PID: kill {SERVER_PID}

Step 7: Verify server is running

After launching, verify the server started successfully:

1. Wait 2-3 seconds for startup
2. Check if the process is still running: ps aux | grep echokit_server | grep -v grep
3. Optionally test the endpoint: curl -s http://localhost:8080/health || echo "Health check not available"

If server is running:

✓ Server is running and responding!

If server crashed:

⚠ The server may have crashed. Check the logs above for errors.

You can try running it manually to see error messages:
  cd {OUTPUT_DIR} && ./target/release/echokit_server

Error Handling

API key entry issues

If user enters an obviously invalid key (too short, contains spaces, etc.):

Warning: That doesn't look like a valid API key.
API keys are typically long strings without spaces.

Use this key anyway? (y/retry)

• y → Accept the key as entered
• retry → Ask again for that service's key

Build fails

If the build fails:

1. Show the error output
2. Don't proceed to server launch
3. Provide manual build instructions
4. Remind user that config.toml is saved with API keys

Server won't start

If the server process exits immediately:

1. Check for error messages in the output
2. Common issues:
   • Port 8080 already in use
   • Invalid config.toml syntax
   • Missing dependencies
   • Incorrect API keys

Provide troubleshooting suggestions based on error messages.

File Locations

All files are relative to SKILL root:

• Platform data: platforms/asr.yml, platforms/tts.yml, platforms/llm.yml
• Templates: templates/SETUP_GUIDE.md
• Examples: examples/voice-companion.toml, examples/coding-assistant.toml

No external dependencies - this SKILL is completely self-contained.

Error Handling

Platform files not found

If a platform file is missing:

Error: Could not find platforms/{category}.yml

Please ensure the SKILL is properly installed with all platform data files.

Invalid user input

If user enters invalid choice:

Invalid choice. Please enter a number between 1 and {N}.

Cannot create output directory

If directory creation fails:

Error: Cannot create directory {OUTPUT_DIR}

Please choose a different location or create the directory manually.

Cannot write files

If file write fails:

Error: Cannot write to {OUTPUT_DIR}/config.toml

Please check permissions and try again.

Template Variables for SETUP_GUIDE.md

When generating SETUP_GUIDE.md, replace these variables:

• {{TIMESTAMP}} - Current date and time
• {{ASSISTANT_TYPE}} - User's description from Phase 1
• {{ASR_NAME}} - Selected ASR platform name
• {{ASR_MODEL}} - Selected ASR model
• {{ASR_API_URL}} - Selected ASR API key URL
• {{TTS_NAME}} - Selected TTS platform name
• {{TTS_VOICE}} - Selected TTS voice
• {{TTS_API_URL}} - Selected TTS API key URL
• {{LLM_NAME}} - Selected LLM platform name
• {{LLM_MODEL}} - Selected LLM model
• {{LLM_API_URL}} - Selected LLM API key URL
• {{MCP_ENABLED}} - "Yes" or "No" based on Phase 3

Read the template from templates/SETUP_GUIDE.md, replace variables, then write to output.

Example Conversation

User: Generate an EchoKit config for a friendly voice assistant

AI: I'm using the EchoKit Config Generator to create your config.toml.

Phase 1: Assistant Definition

What is your AI assistant's primary purpose?
User: Daily conversational assistance and smart home control

What tone should it have?
User: Friendly

Any specific behaviors or requirements?
User: Keep responses short, show some personality

Phase 2: Platform Selection

Available ASR Services:

1. OpenAI Whisper
   URL: https://api.openai.com/v1/audio/transcriptions
   Model: gpt-4o-mini-transcribe
   Get API key: https://platform.openai.com/api-keys
   Notes: Best accuracy, requires OpenAI account with API access

2. Local Whisper
   URL: http://localhost:8080/transcribe
   Model: base
   Get API key: Not required (local deployment)
   Notes: Free and private, requires local whisper server running

Your choice (1-2):
User: 1

[Continue for TTS and LLM...]

Phase 3: MCP Server

Do you need an MCP server? (y/n)
User: n

Phase 4: Generate Files

[Preview config...]

Does this look correct? (y/edit/regenerate)
User: y

Where should I save? (default: echokit_server/)
User: [Enter]

✓ Configuration generated successfully!
[...]

Version History

• 1.3.1 - Added export RUST_LOG=debug before server launch for better troubleshooting
• 1.3.0 - Fixed config.toml format with correct section order ([tts] → [asr] → [llm]), platform-specific field names (ElevenLabs uses token/model_id), removed comments from top, added prompt and vad_url fields for ASR
• 1.2.0 - Added Phase 5: API Key Entry and Server Launch with interactive key collection, automatic config updates, server build, and launch
• 1.1.0 - Enhanced system prompts, custom platform support with auto-fetch, corrected MCP format
• 1.0.0 - Initial release with four-phase flow

Testing

To test this SKILL:

1. Install to ~/.claude/skills/
2. In Claude Code: "Generate an EchoKit config for testing"
3. Verify files are created correctly
4. Check config.toml has valid TOML syntax
5. Test Phase 5: Enter API keys and verify config.toml is updated
6. Test server build (optional, requires Rust/Cargo)
7. Test server launch (optional, requires built server)

---

This SKILL is 100% standalone with no external dependencies.