Telnyx Toolkit

Telnyx Toolkit

The complete toolkit for building with Telnyx. Includes ready-to-use tools and SDK documentation for all Telnyx APIs.

Quick Start

export TELNYX_API_KEY="your_key_here"

🚀 Getting Started

Two companion skills handle account lifecycle. They are included with the toolkit and can also be installed independently via ClawHub.

| Skill | Purpose | Path | Install standalone | |-------|---------|------|--------------------| | Telnyx Bot Signup | Create a new account or sign into an existing one (PoW challenge → email → API key) | {baseDir}/getting-started/telnyx-bot-signup/ | clawhub install telnyx-bot-signup | | Telnyx Freemium Upgrade | Upgrade freemium → professional via GitHub or LinkedIn identity verification | {baseDir}/getting-started/telnyx-freemium-upgrade/ | clawhub install telnyx-freemium-upgrade |

When to Use Account Signup

Hand off to telnyx-bot-signup when ANY of these are true:

> Note: The bot_signup endpoint handles both new and existing accounts transparently — just provide the user's email.

When to Use Account Upgrade

Hand off to telnyx-freemium-upgrade when ANY of these are true:

| Trigger | Detection | |---------|-----------| | Error 10039 | SMS send fails: "destination not verified" | | Error D60 | Voice call fails: "destination not verified" | | Error 10038 | Feature blocked: "not available on current plan" | | Number limit hit | Second phone number purchase fails | | Cannot add funds | Freemium account cannot add payment method or top up | | Explicit request | User says "upgrade my account" |

Before handing off, check ~/.telnyx/upgrade.json — if decision is APPROVED, the account is already upgraded (retry the operation instead). If PASS_TO_HUMAN, it's under review (don't retry). See the telnyx-freemium-upgrade SKILL.md for full decision tree.

Each skill has its own SKILL.md with complete instructions. Read the skill's SKILL.md before executing its workflow.

💳 Balance & Payments

Use these endpoints to check balance and add funds programmatically.

> Important: Top-ups charge the payment method (credit card, PayPal, or ACH) saved in the Telnyx Portal. There is no API to add a payment method — this is done by the user in the portal. Do not prompt the user about this upfront — just attempt the top-up when needed. If it returns 403, that's when you inform the user they need to add a payment method in the portal.

Check Balance

curl -s https://api.telnyx.com/v2/balance -H "Authorization: Bearer $TELNYX_API_KEY"

Response:

{
  "data": {
    "balance": "300.00",
    "credit_limit": "100.00",
    "available_credit": "400.00",
    "currency": "USD"
  }
}

Check Auto-Recharge Status

Check whether auto-recharge is enabled. If it is, the account will top up automatically when balance drops below the threshold — the agent can just wait and retry instead of manually topping up.

curl -s https://api.telnyx.com/v2/payment/auto_recharge_prefs -H "Authorization: Bearer $TELNYX_API_KEY"

Response:

{
  "data": {
    "enabled": true,
    "threshold_amount": "100.00",
    "recharge_amount": "100.00",
    "preference": "credit_paypal"
  }
}

If enabled is true and the agent hits 20100, wait briefly and retry — auto-recharge should handle it. If enabled is false, proceed with the top-up endpoint below.

> Note: Enabling or configuring auto-recharge is a human decision — use the Telnyx Portal to change these settings.

Add Funds (Top Up)

Charges the stored payment method on file. Requires a payment method already configured in the Telnyx Portal.

curl -s -X POST https://api.telnyx.com/v2/payment/stored_payment_transactions -H "Authorization: Bearer $TELNYX_API_KEY" -H "Content-Type: application/json" -d '{"amount": "100.00"}'

The amount field is in dollars and cents (e.g., "100.00", "25.50").

Response:

{
  "data": {
    "id": "de06811a-2e43-4561-af5a-7d0a26e20aaa",
    "record_type": "transaction",
    "amount_cents": 10000,
    "processor_status": "submitted_for_settlement",
    "amount_currency": "USD",
    "created_at": "2026-02-25T10:00:00Z",
    "auto_recharge": false
  }
}

Error handling:

| Status | Meaning | Action | |--------|---------|--------| | 200 | Transaction submitted | Wait for settlement, then retry the original operation | | 401 | Unauthorized | API key is invalid — hand off to telnyx-bot-signup | | 403 | Forbidden | No stored payment method on file — direct user to Telnyx Portal to add one | | 422 | Invalid amount | Amount must be a string with dollars and cents (e.g., "120.00") |

Payment Error Decision Tree

When a Telnyx API call fails with a payment-related error, follow this tree. The agent does not need to know the account tier upfront — the error codes and response codes reveal the right path.

Step 1: Identify the error

| Error Code | Meaning | Go to | |-----------|---------|-------| | 10038 / 10039 | Feature not permitted / limited | Step 2 (upgrade) | | 20100 / 20012 | Insufficient Funds / Account inactive | Step 3 (try top-up) |

> Note: The API may return 20100 (Insufficient Funds) even on freemium accounts where 10038/10039 would be more accurate. Don't assume 20100 means the account is professional — always attempt the top-up and let the response tell you.

Step 2: Feature restriction → Upgrade first

Errors 10038/10039 mean the account is freemium. Freemium accounts cannot add payment methods or top up — they must upgrade first.

1. Hand off to telnyx-freemium-upgrade → upgrade to professional 2. User adds payment method at Telnyx Portal 3. Then proceed to Step 3 if funds are needed

Step 3: Insufficient funds → Try to top up

Always attempt the top-up regardless of account tier — the response will reveal the right path.

1. GET /v2/balance — check current available credit 2. GET /v2/payment/auto_recharge_prefs — if enabled: true, wait briefly and retry (auto-recharge will handle it). If it does, stop here 3. If auto-recharge is off: POST /v2/payment/stored_payment_transactions — top up via API 4. If top-up returns 200 → retry the original operation 5. If top-up returns 403 → no payment method on file. This is the real signal: - Check ~/.telnyx/upgrade.json — if decision is APPROVED, the account is professional but has no payment method → direct user to Telnyx Portal to add one - Otherwise, the account is likely freemium → hand off to telnyx-freemium-upgrade (Step 2)

🔧 Tools (Ready-to-Use)

These are standalone utilities with scripts you can run directly:

| Tool | Description | Path | |------|-------------|------| | Missions | AI agent task tracking, voice/SMS assistants, scheduled calls | {baseDir}/tools/missions/ | | STT | Speech-to-text transcription (Whisper) | {baseDir}/tools/stt/ | | TTS | Text-to-speech synthesis | {baseDir}/tools/tts/ | | CLI | Telnyx CLI wrapper and helpers | {baseDir}/tools/cli/ | | Network | WireGuard mesh networking, public IP exposure | {baseDir}/tools/network/ | | RAG | Semantic search with Telnyx Storage + embeddings | {baseDir}/tools/rag/ | | 10DLC Registration | Interactive wizard for A2P messaging registration | {baseDir}/tools/10dlc-registration/ | | Storage Backup | Backup/restore workspace to Telnyx Storage | {baseDir}/tools/storage-backup/ | | Voice SIP | SIP-based voice call control | {baseDir}/tools/voice-sip/ | | Embeddings | Semantic search & text embeddings (Telnyx-native) | {baseDir}/tools/embeddings/ |

Tool Usage Examples

# Create a mission and schedule calls
python3 {baseDir}/tools/missions/scripts/telnyx_api.py init "Find contractors" "Call contractors and get quotes" "User request" '[{"step_id": "calls", "description": "Make calls", "sequence": 1}]'
Transcribe audio
python3 {baseDir}/tools/stt/scripts/telnyx-stt.py /path/to/audio.mp3
Generate speech  
python3 {baseDir}/tools/tts/scripts/telnyx-tts.py "Hello world" -o output.mp3
Join mesh network
{baseDir}/tools/network/join.sh
Index files for RAG
python3 {baseDir}/tools/rag/sync.py
10DLC registration wizard
{baseDir}/tools/10dlc-registration/setup.sh
Semantic search
python3 {baseDir}/tools/embeddings/search.py "your query" --bucket your-bucket
Index a file for search
python3 {baseDir}/tools/embeddings/index.py upload /path/to/file.md

Each tool has its own SKILL.md with detailed usage instructions.

📚 API Documentation (SDK Reference)

SDK documentation for all Telnyx APIs, organized by language:

| Language | Path | Skills | |----------|------|--------| | JavaScript | {baseDir}/api/javascript/ | 35 | | Python | {baseDir}/api/python/ | 35 | | Go | {baseDir}/api/go/ | 35 | | Java | {baseDir}/api/java/ | 35 | | Ruby | {baseDir}/api/ruby/ | 35 |

API Categories

Each language includes documentation for:

Finding API Docs

{baseDir}/api/{language}/telnyx-{capability}-{language}/SKILL.md

Example: {baseDir}/api/python/telnyx-voice-python/SKILL.md

📱 WebRTC Client SDKs

Guides for building real-time voice apps on mobile and web:

| Platform | Path | |----------|------| | iOS | {baseDir}/webrtc-clients/ios/ | | Android | {baseDir}/webrtc-clients/android/ | | Flutter | {baseDir}/webrtc-clients/flutter/ | | JavaScript (Web) | {baseDir}/webrtc-clients/javascript/ | | React Native | {baseDir}/webrtc-clients/react-native/ |

Structure

telnyx-toolkit/
├── SKILL.md              # This file (index)
├── getting-started/      # Account creation & upgrade
│   ├── telnyx-bot-signup/
│   └── telnyx-freemium-upgrade/
├── tools/                # Ready-to-use utilities
│   ├── missions/         # AI agent task tracking
│   ├── stt/
│   ├── tts/
│   ├── cli/
│   ├── network/
│   ├── rag/
│   ├── 10dlc-registration/
│   ├── storage-backup/
│   ├── voice-sip/
│   └── embeddings/
├── api/                  # SDK documentation
│   ├── javascript/       # 35 skills
│   ├── python/           # 35 skills
│   ├── go/               # 35 skills
│   ├── java/             # 35 skills
│   └── ruby/             # 35 skills
└── webrtc-clients/       # Mobile/Web SDK guides
    ├── ios/
    ├── android/
    ├── flutter/
    ├── javascript/
    └── react-native/

Resources

export TELNYX_API_KEY="your_key_here"