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.
npx skills add sinch/sinch-plugins --skill sinch-api-messages-send-choicegit clone --depth 1 https://github.com/sinch/sinch-pluginsWrote 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.
[](https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-messages-send-choice)<a href="https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-messages-send-choice"><img src="https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-messages-send-choice/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-messages-send-choice"><img src="https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-messages-send-choice.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00024 | $0.00617 |
| Opus 5 | $0.00012 | $0.00309 |
| Sonnet 5 | $0.00005 | $0.00123 |
| Haiku 4.5 | $0.00002 | $0.00062 |
Grade A, and why
sinch-api-messages-send-choice 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 8d 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.
How it starts
The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Send Choice Message
Send a message with suggested actions (buttons or quick replies) to a recipient via the Sinch Conversation API. Supported on RCS, WhatsApp, and other interactive channels.
IMPORTANT: Execute this command directly. Do NOT generate script files. Perform the API call immediately.
Input
--to/-t: Recipient phone number (E.164) - required--message/-m: Main message text shown above choices - required--choices/-c: Comma-separated list of choice labels (e.g., "Yes,No,Maybe") - required--channel/-C: Channel (RCS, WHATSAPP, SMS) - optional, default RCS for best support
Arguments: $ARGUMENTS
Instructions
Execute these steps directly - do not write code or scripts:
-
If $ARGUMENTS empty: ask for recipient, message text, and choice labels (comma-separated). Otherwise parse.
-
Validate: --to (E.164), --message (non-empty), --choices (at least one, comma-separated). --channel optional, default RCS.
-
Try MCP tool for choice/suggested-reply message if available. On success display result and exit.
-
If MCP not available: get CONVERSATION_* env vars. If missing, report "Sinch API is not configured."
-
Build message.choice_message: text_message with the main message; choices array - each choice with text_message.text (label) and postback_data (e.g. slug of label). Recipient via channel_identities.
-
POST https://{region}.conversation.api.sinch.com/v1/projects/{projectId}/messages:send with OAuth2, body: app_id, recipient, message.
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On success: "✅ Choice message sent!" with message ID. Handle errors clearly.
-
Handle all errors gracefully.
Examples
/sinch-api-messages-send-choice --to=+14155551234 --message="How can we help?" --choices="Sales,Support,Feedback"
/sinch-api-messages-send-choice -t +14155551234 -m "Confirm order?" -c "Yes,No"
API Reference
- MCP Tool:
mcp__sinch__send-choice-message(if available) - API Endpoint: POST /v1/projects/{projectId}/messages:send
- Message type: choice_message (text_message + choices)
- Documentation: https://developers.sinch.com/docs/conversation/message-types
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.
- 8d ago First seen · 59 lines · 24 tokens per session scan A 7c9894f2bde3
sinch-api-messages-send-choice is a skill published in the GitHub repository sinch/sinch-plugins (6 stars, last pushed 26d ago), licensed Apache-2.0. It adds 24 tokens to every session and 617 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.
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