sinch-api-contacts-list

sinch-api-contacts-list is a skill for Claude Code from sinch/sinch-plugins. It costs 16 tokens per session (443 once invoked), scanned A, original, Apache-2.0.

A command for viewing contacts stored in a Sinch Conversation API project. These contacts represent people and the ways they can be reached, such as phone numbers or WhatsApp accounts.

In plain words
What is it for?
Use it to list contacts, search by channel, choose the number of results, continue from a pagination token, or request table or JSON output.
Why use it?
It lets you find and inspect contacts through the API without writing a request yourself. Results can be filtered by messaging channel and retrieved across multiple pages.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

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-contacts-list
Any agent
npx skills add sinch/sinch-plugins --skill sinch-api-contacts-list
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-contacts-list

README.md
[![agentmods](https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-contacts-list.svg)](https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-contacts-list)
Your own site
<a href="https://agentmods.dev/skills/sinch/sinch-plugins/sinch-api-contacts-list"><img src="https://agentmods.dev/badge/skills/sinch/sinch-plugins/sinch-api-contacts-list.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 443 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 5.1 $0.00016 $0.00443
Opus 5 $0.00008 $0.00221
Sonnet 5 $0.00003 $0.00089
Haiku 4.5 $0.00002 $0.00044

Measured 6d ago against content hash b1029f4cdfd9, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

sinch-api-contacts-list 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 6d 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-contacts-list/SKILL.md · 47 lines

What it actually says

List Contacts

List or search contacts for your Sinch Conversation API project. Contacts represent end-users with channel identities (phone, WhatsApp, etc.). Uses OAuth2.

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

Input

  • --channel / -c: Filter by channel (SMS, WHATSAPP, RCS) - optional
  • --page-size / -n: Results per page - optional, default 20
  • --page-token / -p: Pagination token - optional
  • --format / -f: Output format (table or json) - optional, default table

Arguments: $ARGUMENTS

Instructions

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

  1. If $ARGUMENTS empty: use defaults (table, page-size 20). Otherwise parse.

  2. Validate: optional --channel, --page-size, --page-token, --format. Get CONVERSATION_* env vars. Conversation API base: https://{region}.conversation.api.sinch.com/v1. If missing, report "Sinch API is not configured."

  3. GET https://{region}.conversation.api.sinch.com/v1/projects/{projectId}/contacts with query params (channel, page_size, page_token). OAuth2 Bearer token.

  4. Format response: table (id, channel identities, metadata) or JSON. Display "✅ Contacts listed" with count. Include page_token for next page if present.

  5. Handle 401, 404. Handle all errors gracefully.

Examples

/sinch-api-contacts-list
/sinch-api-contacts-list --channel=WHATSAPP --page-size=50
/sinch-api-contacts-list -f json

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. 6d ago First seen · 47 lines · 16 tokens per session scan A b1029f4cdfd9

Subscribe to this mod's changes

sinch-api-contacts-list is a skill published in the GitHub repository sinch/sinch-plugins (6 stars, last pushed 23d ago), licensed Apache-2.0. It adds 16 tokens to every session and 443 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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