feat: add twilio plugin implementation Closes #1631

[boolkeys]

feat: add twilio plugin implementation

Relates to & Closes #1631

Risks

Low - This plugin:

• Uses standard Twilio services (SMS, Voice with Amazon Polly TTS)
• Implements proper webhook handling and security
• Includes comprehensive error handling and logging
• Follows A2P 10DLC compliance requirements

Background

What does this PR do?

• Adds Twilio plugin for SMS and voice interactions
• Implements two core actions: SEND_SMS and CALL_VOICE
• Supports custom Amazon Polly voices
• Provides webhook server for handling incoming messages/calls
• Includes TypeScript types and interfaces
• Follows Eliza plugin architecture

What kind of change is this?

Feature (non-breaking change which adds functionality)

Documentation

Added comprehensive documentation including:

• A2P 10DLC compliance requirements
• Plugin configuration guide
• Available actions and usage examples
• Voice configuration options
• Webhook setup instructions (ngrok & production)
• Environment variables reference
• Troubleshooting guide

Testing

Where should a reviewer start?

1. src/actions/ - SMS and voice call actions
2. src/services/webhook.ts - Webhook handling
3. src/services/twilio.ts - Twilio service implementation

Testing steps

1. Configure environment:

   ANTHROPIC_API_KEY=your_key
   TWILIO_ACCOUNT_SID=your_sid
   TWILIO_AUTH_TOKEN=your_token
   TWILIO_PHONE_NUMBER=your_number
   TWILIO_CHARACTER=your_character.json
   WEBHOOK_PORT=3004
   WEBHOOK_BASE_URL=your_webhook_url
   

2. Setup webhook:

   • Development: Use ngrok (ngrok http 3004)
   • Production: Configure domain

3. Test SMS action:

   "Send SMS to +1234567890: Hello!"
   

4. Test Voice action:

   "Call +1234567890 and say Welcome!"
   

Voice Configuration Testing

Test different voice configurations:

{
	"settings": {
		"voice": {
			"language": "en",
			"gender": "female"
		}
	}
}

Or with custom Polly voice:

{
	"settings": {
		"voice": {
		"custom": "Polly.Aria-Neural"
		}
	}
}

Video demo

https://www.boolkeys.com/eliza/plugin-twilio/DEMO-plugin-twilio.mov

Deploy Notes

1. Register for A2P 10DLC if sending to US numbers
2. Configure webhooks in Twilio Console
3. Set all required environment variables
4. Ensure webhook endpoint is publicly accessible

Discord: @boolkeys

[boolkeys]

@Freytes core workflow ok: User calls or texts Twilio number -> agent responses via text or voice.

current code doesn't need ElevenLabs or Deepgram services. using Twilio's built-in services: voice generation and speech recognition.

[Freytes]

@Freytes core workflow ok: User calls or texts Twilio number -> agent responses via text or voice.

current code doesn't need ElevenLabs or Deepgram services. using Twilio's built-in services: voice generation and speech recognition.

If I can get a demo of this working I would recommend that you completed the bounty

[boolkeys]

@Freytes core workflow ok: User calls or texts Twilio number -> agent responses via text or voice. current code doesn't need ElevenLabs or Deepgram services. using Twilio's built-in services: voice generation and speech recognition.

If I can get a demo of this working I would recommend that you completed the bounty

Hi, demo is here: https://www.boolkeys.com/eliza/plugin-twilio/DEMO-plugin-twilio.mov how can I complete the bounty? thanks for your help

[Freytes]

@Freytes core workflow ok: User calls or texts Twilio number -> agent responses via text or voice. current code doesn't need ElevenLabs or Deepgram services. using Twilio's built-in services: voice generation and speech recognition.

If I can get a demo of this working I would recommend that you completed the bounty

Hi, demo is here: https://www.boolkeys.com/eliza/plugin-twilio/DEMO-plugin-twilio.mov how can I complete the bounty? thanks for your help

@boolkeys great demo! Jin will be in touch for bounty payment

[mot1se]

would like to mention that this plugin does not seem functional... i cant find the code for the actions?

[boolkeys]

would like to mention that this plugin does not seem functional... i cant find the code for the actions?

no action needed, all code is triggered via webhook need to setup a server webhook (like ngrok) and configure that webhook url in twilio console before using

[AIFlowML]

You can add a service and avoid the ngrok. Also the actions should be implemented since is a framework and people will use your tool as building block.

[boolkeys]

You can add a service and avoid the ngrok. Also the actions should be implemented since is a framework and people will use your tool as building block.

Sure I’ll look into that

[Freytes]

@boolkeys is it probable to use a custom voice if support by Twilio?

[boolkeys]

@boolkeys is it probable to use a custom voice if support by Twilio?

Yes, Twilio supports custom voices through Amazon Polly. https://docs.aws.amazon.com/polly/latest/dg/available-voices.html

I updated the code to support custom Polly voices. Read more in README

[boolkeys]

You can add a service and avoid the ngrok. Also the actions should be implemented since is a framework and people will use your tool as building block.

2 options for the webhook: ngrok for local (https needed by twilio) or custom domain name). I added 2 actions: SEND_SMS and CALL_VOICE

[Freytes]

@boolkeys I thought Twilio has an automatic ElevenLabs integration, I am just thinking of other options aside from Amazon

[boolkeys]

@boolkeys I thought Twilio has an automatic ElevenLabs integration, I am just thinking of other options aside from Amazon

I will integrate elevenlabs as an option (Amazon does not require api key)

[Freytes]

@boolkeys I thought Twilio has an automatic ElevenLabs integration, I am just thinking of other options aside from Amazon

I will integrate elevenlabs as an option (Amazon does not require api key)

Can we discuss? Please reach out to me on discord, I have reached out to you

[boolkeys]

plugin-twilio updated with:

• elevenlabs integration
• sms and call actions

feel free to test it out and get back to me with any question/inquiry @Freytes @mot1se

[GeorgeBacky]

I have tested everything and reviewed your code. Everything seems to be in order, and it's ready to proceed to the main branch.

[boolkeys]

I have tested everything and reviewed your code. Everything seems to be in order, and it's ready to proceed to the main branch.

great! did you enjoy the experience? kind of fun talking to our made-up characters by phone, right?

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Walkthrough

The pull request introduces a comprehensive Twilio plugin for ElizaOS, enabling SMS and voice call capabilities. The implementation includes services for sending SMS, handling voice calls, text-to-speech conversion using ElevenLabs, and webhook management. The plugin supports initializing calls, generating responses, and managing conversation memory across different interaction types.

Changes

File	Change Summary
.gitignore	Added .env_BACKUP, pnpm-lock.yaml, and /characters to ignored files
package.json	Added @elizaos/plugin-twilio dependency
packages/core/types/index.d.ts	Added ServiceType enum
packages/plugin-twilio/	Added complete plugin structure with services, actions, routes, and utilities

Assessment against linked issues

Objective	Addressed	Explanation
Twilio text support	✅
Twilio voice support	✅
ElevenLabs TTS integration	✅
Speech-to-Text	❓	No explicit Deepgram/Whisper integration visible
Demonstration of functionality	❓	Video recording not included in PR

The pull request substantially meets the core requirements for Twilio text and voice integration, with a robust implementation of SMS and voice call capabilities. The ElevenLabs integration for text-to-speech is well-implemented. However, the speech-to-text component and video demonstration are not explicitly addressed in the current PR.

---

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[boolkeys]

Speech-to-Text ❓ No explicit Deepgram/Whisper integration visible Demonstration of functionality ❓ Video recording not included in PR

The pull request substantially meets the core requirements for Twilio text and voice integration, with a robust implementation of SMS and voice call capabilities. The ElevenLabs integration for text-to-speech is well-implemented. However, the speech-to-text component and video demonstration are not explicitly addressed in the current PR.

---

This plugin uses Twilio's built-in speech recognition capabilities for voice interactions.

Demo here: https://www.boolkeys.com/eliza/plugin-twilio/DEMO-plugin-twilio.mov

[sebastienmascha]

@boolkeys how can we use your plugin? Is there anything else to do for the integration? I am happy to contribute as well.

https://github.com/elizaOS/eliza/issues/1631#issuecomment-2664964453

[boolkeys]

You can download pr and use the plugin as is but i don't know about integration in Eliza plugins, i guess i have to make a new pr since the plugin repo exists now

[boolkeys]

plugin reference in registry "@elizaos-plugins/plugin-twilio": "github:boolkeys/plugin-twilio"

https://github.com/boolkeys/plugin-twilio