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:

No API key exists (

TELNYX_API_KEY

not set,

~/.config/telnyx/config.json

missing)

API key is invalid/expired (401 errors from Telnyx API)
User wants to create a new Telnyx account
API key needs to be refreshed after an upgrade (same email, new key)

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

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"
  }
}

enabled

true

and the agent hits

, wait briefly and retry — auto-recharge should handle it. If

enabled

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

Feature not permitted / limited

Step 2 (upgrade)

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

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

Hand off to telnyx-freemium-upgrade → upgrade to professional
User adds payment method at Telnyx Portal
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.

```
GET /v2/balance
```
— check current available credit
```
GET /v2/payment/auto_recharge_prefs
```
— if
```
enabled: true
```
, wait briefly and retry (auto-recharge will handle it). If it does, stop here

If auto-recharge is off:

POST /v2/payment/stored_payment_transactions

— top up via API

If top-up returns 200 → retry the original operation
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:

Voice — Calls, call control, conferencing, streaming, gather
Messaging — SMS, MMS, profiles, hosted messaging
Numbers — Search, purchase, configure, compliance
AI — Inference, assistants, embeddings
Storage — Object storage (S3-compatible)
SIP — Trunking, connections, integrations
Video — Video rooms and conferencing
Fax — Programmable fax
IoT — SIM management, wireless
Verify — Phone verification, 2FA
Account — Management, billing, reports
Porting — Port numbers in/out
10DLC — A2P messaging registration
TeXML — TeXML applications
Networking — Private networks, SETI
WebRTC — Server-side WebRTC

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/

Telnyx Toolkit

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Telnyx Toolkit

Quick Start

🚀 Getting Started

When to Use Account Signup

When to Use Account Upgrade

💳 Balance & Payments

Check Balance

Check Auto-Recharge Status

Add Funds (Top Up)

Payment Error Decision Tree

🔧 Tools (Ready-to-Use)

Tool Usage Examples

Transcribe audio

Generate speech

Join mesh network

Index files for RAG

10DLC registration wizard

Semantic search

Index a file for search

📚 API Documentation (SDK Reference)

API Categories

Finding API Docs

📱 WebRTC Client SDKs

Structure

Resources

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README

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