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sinch-api-voice-callout

sinch-api-voice-callout is a skill for Claude Code from sinch/sinch-plugins. It costs 24 tokens per session (611 once invoked), scanned A, original, Apache-2.0.

A command for placing an automated outbound phone call through Sinch Voice API. It sends written text to a phone number and uses text-to-speech to read it aloud.

In plain words
What is it for?
Use it for notification calls, spoken alerts, reminders, or other calls that read supplied text to a recipient.
Why use it?
It removes the need to build the call request manually and checks the phone number, spoken text, and voice credentials.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

not rated 6repo 25d ago A scan 24 tokens original Apache-2.0

Good fit Use it for notification calls, spoken alerts, reminders, or other calls that read supplied text to a recipient.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sinch/sinch-plugins/sinch-api-voice-callout
View source ↗ sinch/sinch-plugins
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add sinch/sinch-plugins --skill sinch-api-voice-callout
Clone the repo
git clone --depth 1 https://github.com/sinch/sinch-plugins

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for sinch-api-voice-callout

README.md
[![agentmods](https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-voice-callout.svg)](https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-voice-callout)
Your own site
<a href="https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-voice-callout"><img src="https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-voice-callout.svg" alt="Measured on agentmods" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 611 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00024 $0.00611
Opus 5 $0.00012 $0.00305
Sonnet 5 $0.00005 $0.00122
Haiku 4.5 $0.00002 $0.00061

Measured 7d ago against content hash 882c92cf5ac2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

sinch-api-voice-callout scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/sinch-antigravity-plugin/skills/sinch-api-voice-callout/SKILL.md · 57 lines

How it starts

The opening of the file, as written. The whole thing — 57 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Voice Callout (TTS Call)

Place an outbound voice call using the Sinch Voice API. Supports text-to-speech (TTS) callouts to a phone number. Uses Application Key + Secret (not Conversation API credentials).

IMPORTANT: Execute this command directly. Do NOT generate script files. Perform the API call immediately.

Input

  • --to / -t: Destination phone number (E.164) - required
  • --text / -T: Text to be spoken (TTS) - required
  • --cli / -c: Caller ID / CLI (E.164) - optional
  • --locale / -l: TTS locale (e.g. en-US) - optional, default en-US

Arguments: $ARGUMENTS

Instructions

Execute these steps directly - do not write code or scripts:

  1. If $ARGUMENTS empty: ask for destination number, text to speak, optional caller ID and locale. Otherwise parse.

  2. Validate: --to (E.164), --text (non-empty). Optional: --cli (E.164), --locale.

  3. Get VOICE_APPLICATION_KEY and VOICE_APPLICATION_SECRET from env (or equivalent Voice app credentials). Voice API uses Application Key/Secret, not OAuth2. If missing, report "Voice API is not configured. Set VOICE_APPLICATION_KEY and VOICE_APPLICATION_SECRET."

  4. Request body: method "ttsCallout", ttsCallout: destination (type "number", endpoint), cli, locale, text.

  5. POST https://calling.api.sinch.com/calling/v1/callouts with Basic Auth (ApplicationKey:ApplicationSecret) or signed request, Content-Type application/json.

  6. On success: "✅ Call initiated" with call ID. Handle 400, 401, 403 with clear messages.

  7. Handle all errors gracefully.

Examples

/sinch-api-voice-callout --to=+14155551234 --text="Hello, this is a test call from Sinch."
/sinch-api-voice-callout -t +14155551234 -T "Your verification code is 1 2 3 4" --locale=en-US

API Reference

Notes

  • Voice API uses Application Key + Secret from Voice app in Sinch Dashboard, not project OAuth2.
  • Regional endpoints available: calling-use1, calling-euc1, calling-apse1, etc.

Read the full file on GitHub · 57 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 7d ago First seen · 57 lines · 24 tokens per session scan A 882c92cf5ac2

Subscribe to this mod's changes

sinch-api-voice-callout is a skill published in the GitHub repository sinch/sinch-plugins (6 stars, last pushed 25d ago), licensed Apache-2.0. It adds 24 tokens to every session and 611 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Backend and APIsClaude Codeaicligeminigemini-extensionsms
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