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sinch-api-messages-send-media

sinch-api-messages-send-media is a skill for Claude Code from sinch/sinch-plugins. It costs 24 tokens per session (684 once invoked), scanned A, original, Apache-2.0.

A command for sending an image, video, audio file, or document to a recipient through Sinch’s Conversation API, a service for messaging across channels such as SMS, WhatsApp, and RCS.

In plain words
What is it for?
Use it to send a public media file with an optional caption to a phone number through SMS, MMS, RCS, WhatsApp, or another supported channel.
Why use it?
It avoids writing an integration script just to send a media message. The command checks the recipient, media URL, and selected messaging channel before making the request.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

not rated 6repo 27d ago A scan 24 tokens original Apache-2.0

Good fit Use it to send a public media file with an optional caption to a phone number through SMS, MMS, RCS, WhatsApp, or another supported channel.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/sinch/sinch-plugins/sinch-api-messages-send-media
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-messages-send-media
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-messages-send-media

README.md
[![agentmods](https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-messages-send-media/github.svg)](https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-messages-send-media)
Your own site
<a href="https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-messages-send-media"><img src="https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-messages-send-media/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.

agentmods 80×15 button for sinch-api-messages-send-media

Your own site · 80×15
<a href="https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-messages-send-media"><img src="https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-messages-send-media.svg" alt="Reviewed on agentmods" width="80" 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 684 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 $0.00684
Opus 5 $0.00012 $0.00342
Sonnet 5 $0.00005 $0.00137
Haiku 4.5 $0.00002 $0.00068

Measured 9d ago against content hash 2736f515d2d6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

sinch-api-messages-send-media 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 9d 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-messages-send-media/SKILL.md · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Send Media Message

Send a media message (image, video, audio, or document) to a recipient using the Sinch Conversation API. Supports SMS (MMS), RCS, WhatsApp, and other channels that support media.

IMPORTANT: Execute this command directly. Do NOT generate script files. Do NOT create Python/JavaScript files. Perform the API call immediately using the instructions below.

Input

  • --to / -t: Recipient phone number (E.164 format) - required
  • --url / -u: Public URL of the media file - required
  • --channel / -c: Channel (SMS, RCS, WHATSAPP, MMS) - optional, defaults to SMS
  • --caption / -C: Optional caption text for the media

Arguments: $ARGUMENTS

Instructions

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

  1. Check if $ARGUMENTS is empty or only contains the command name:

    • If empty, enter interactive mode: ask for recipient, media URL, channel, and optional caption
    • If arguments provided, proceed to step 1

  2. Parse and validate: --to (E.164), --url (valid HTTPS URL), --channel (default SMS), optional --caption

  3. Try MCP tool mcp__sinch__send-media-message with recipient, url, channel, and caption. On success display result and skip to step 7.

  4. If MCP not available, get config from env: CONVERSATION_PROJECT_ID, CONVERSATION_REGION, CONVERSATION_APP_ID, CONVERSATION_KEY_ID, CONVERSATION_KEY_SECRET. If missing, report "Sinch API is not configured."

  5. Send via Conversation API: POST https://{region}.conversation.api.sinch.com/v1/projects/{projectId}/messages:send with OAuth2 Bearer token. Request body: app_id, recipient (channel_identities with channel and identity), message.media_message with url and optional caption.

  6. On success (200/201): display "✅ Media message sent successfully!" with message ID, recipient, channel.

  7. Handle errors: validation failures, missing config, API errors with status and description.

  8. Handle errors gracefully for all paths.

Examples

/sinch-api-messages-send-media --to=+14155551234 --url=https://example.com/image.jpg
/sinch-api-messages-send-media -t +14155551234 -u https://example.com/video.mp4 --channel=RCS --caption="Check this out"

Read the full file on GitHub · 60 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. 9d ago First seen · 60 lines · 24 tokens per session scan A 2736f515d2d6

Subscribe to this mod's changes

sinch-api-messages-send-media is a skill published in the GitHub repository sinch/sinch-plugins (6 stars, last pushed 27d ago), licensed Apache-2.0. It adds 24 tokens to every session and 684 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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