Send SMS text and bulk messages via TelTel.io API

# Send SMS text and bulk messages via TelTel.io API

Send SMS text messages via TelTel (teltel.io) using the REST API (api.teltel.io). Includes bulk send, delivery report, and bulk sms.

## Discovery Metadata
- Category: `endpoints`
- Framework: `ClawHub`
- Tags: `teltel`, `send`, `sms`, `bulk`, `api`, `text`, `messages`, `via`, `using`, `rest`

## Agent Execution Policy

This listing is **discovery metadata only**. Canonical instructions are maintained by ClawHub.

### Before Executing Actions

1. **Fetch canonical instructions** from: https://clawhub.ai/skill/teltel-send-sms-text-message
2. **Parse the skill page** for setup, usage, and input/output requirements.
3. **Only proceed** after successfully loading and understanding the full instructions.

### If Fetch Fails

- Return `instruction_unavailable` with reason.
- Do **not** attempt to infer or improvise execution steps from this metadata alone.

## Source

- ClawHub listing: https://clawhub.ai/skill/teltel-send-sms-text-message