sinch-api-verification-check

sinch-api-verification-check is a skill for Claude Code, Codex from sinch/sinch-plugins. It costs 20 tokens per session (468 once invoked), scanned A, original, Apache-2.0.

A tool for submitting a verification code to Sinch so a phone verification can be completed. Sinch is a communications service that can send verification codes by text message or phone call.

In plain words
What is it for?
Use it with a verification ID and entered code to confirm SMS, flash-call, or callout verification attempts.
Why use it?
It handles the final confirmation step after a user enters the code they received.

Skill for Claude CodeCodex

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.

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

Made for: Claude Code, Codex.

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-verification-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-verification-check.svg)](https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-verification-check)
Your own site
<a href="https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-verification-check"><img src="https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-verification-check.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 468 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00020 $0.00468
Opus 5 $0.00010 $0.00234
Sonnet 5 $0.00004 $0.00094
Haiku 4.5 $0.00002 $0.00047

Measured 4d ago against content hash 4ff43f302be4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sinch-api-verification-check 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 4d 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-verification-check/SKILL.md · 50 lines

What it actually says

Check / Report Verification Code

Report the verification code entered by the user to complete a Sinch Verification. Uses the verification ID returned from the start command. Uses Application Key + Secret.

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

Input

  • --id / -i: Verification ID (from start command) - required
  • --code / -c: Code entered by the user (e.g. PIN from SMS) - required
  • --method / -m: Method used (sms, flashcall, callout) - optional, default sms

Arguments: $ARGUMENTS

Instructions

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

  1. If $ARGUMENTS empty: ask for verification ID and the code the user entered. Otherwise parse.

  2. Validate: --id (non-empty), --code (non-empty), optional --method (default sms).

  3. Get Verification API application key and secret from env. If missing, report "Verification API is not configured."

  4. Request body: method ("sms" or as specified), sms: { code: "" } (for SMS method). Use appropriate body for flashcall/callout if API differs.

  5. PUT https://verification.api.sinch.com/verification/v1/verifications/id/{verificationId} with Basic Auth, body with method and code.

  6. On success: "✅ Verification successful" or "Verification completed". On invalid code: "❌ Invalid or expired code." Handle 404, 401, 400 with clear messages.

  7. Handle all errors gracefully.

Examples

/sinch-api-verification-check --id=VERIFICATION_ID --code=1234
/sinch-api-verification-check -i VERIFICATION_ID -c 5678 --method=sms

API Reference

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. 4d ago First seen · 50 lines · 20 tokens per session scan A 4ff43f302be4

Subscribe to this mod's changes

sinch-api-verification-check is a skill published in the GitHub repository sinch/sinch-plugins (6 stars, last pushed 22d ago), licensed Apache-2.0. It adds 20 tokens to every session and 468 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.