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Official agent skill

AWS Sms Voice

by aws in aws/agent-toolkit-for-aws

Onboards RCS Business Messaging and Notify OTP via the pinpoint-sms-voice-v2 AWS CLI.

OfficialApache-2.0Auto-check passed

Install AWS Sms Voice

skills CLI
$ npx skills add aws/agent-toolkit-for-aws --skill aws-sms-voice -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install aws/agent-toolkit-for-aws aws-sms-voice --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/aws/agent-toolkit-for-aws.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/specialized-skills/messaging-and-streaming-skills/aws-sms-voice .claude/skills/aws-sms-voice && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
aws-sms-voice
GitHub stars
2.8k
Token cost
~2.5k tokens
SKILL.md length
1,079 words
Files
6 (incl. references)
Skills in repo
138
Repo updated
First seen
Licence
Apache-2.0

At a glance

Onboards RCS Business Messaging and Notify OTP via the pinpoint-sms-voice-v2 AWS CLI.

  • Works in 2 steps: Create an RCS test agent and send your… → Send an OTP with Notify — a…
  • SKILL.md covers Overview, Guardrail — where this skill's…, Choosing a path and Before you start (both paths), plus 2 more sections
  • Calls aws

What it does

AWS Sms Voice is an agent skill from aws/agent-toolkit-for-aws, published by the product's own GitHub organization. Onboards RCS Business Messaging and Notify OTP via the pinpoint-sms-voice-v2 AWS CLI. Covers creating a branded RCS test agent (logo, banner, rich cards, suggested replies), adding verified testers, and sending/receiving the first RCS message; and configuring AWS End User Messaging Notify to send one-time-passcode (OTP) verification codes through AWS-managed phone numbers without buying a number or completing carrier registration. Also discovers which registration type a country requires from live API definitions…

Its SKILL.md is about 2.5k tokens, which your agent loads only when the skill is triggered. The skill folder holds 6 other files, including reference files (for example `references/customer-go-to-production-guide.md`, `references/hello-notify-otp.md` and `references/hello-rcs-test-agent.md`).

It works with Amazon Web Services and WhatsApp. The repository describes itself as: Official, AWS-supported MCP servers, skills, and plugins to help AI agents build on AWS. The licence is Apache-2.0.

Example prompts

  • “Use the aws-sms-voice skill to onboard RCS Business Messaging and Notify OTP via the pinpoint-sms-voice-v2 AWS CLI”
  • “/aws-sms-voice”

Workflow steps

2 steps, taken from the first numbered list in SKILL.md.

  1. Create an RCS test agent and send your first branded message — a branded
  2. Send an OTP with Notify — a one-time-passcode text through

What it can do on your machine

Read from SKILL.md and the folder at commit df2ab44. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • aws

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Links to these hosts (documentation or services it may open):

    • docs.aws.amazon.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

AWS Sms Voice loads about 2.5k tokens when it runs, and up to ~27k if it reads all its reference files. Until then it costs about 243 tokens; SKILL.md has 1,079 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~243
When it runs · the whole SKILL.md, loaded when a task matches
~2.5k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~27k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from aws/agent-toolkit-for-aws at commit df2ab44, republished under its Apache-2.0 licence (© aws). 1,079 words, ~2,463 tokens.

Download SKILL.mdSave it as .claude/skills/aws-sms-voice/SKILL.md (or your agent's skills folder). This skill also uses 5 other files; get the full folder from GitHub.
name
aws-sms-voice
description
Onboards RCS Business Messaging and Notify OTP via the pinpoint-sms-voice-v2 AWS CLI. Covers creating a branded RCS test agent (logo, banner, rich cards, suggested replies), adding verified testers, and sending/receiving the first RCS message; and configuring AWS End User Messaging Notify to send one-time-passcode (OTP) verification codes through AWS-managed phone numbers without buying a number or completing carrier registration. Also discovers which registration type a country requires from live API definitions and runs the universal registration lifecycle (create, derive fields, fill, submit, recover from denial, resubmit) shared by 10DLC, toll-free, short code, sender ID, RCS country launch, and Notify tier upgrade. Applicable to RCS agent setup, RCS message send/receive, Notify OTP configuration, verification-code delivery, registration requirements by country, and registration submission. Does not cover WhatsApp (see aws-social-messaging).
version
1

AWS End User Messaging — SMS, Voice, RCS & Notify

Overview

AWS End User Messaging SMS and Voice (the pinpoint-sms-voice-v2 API) is the control and data plane for SMS, Voice, RCS Business Messaging, and Notify (OTP). This skill covers the two fastest onboarding paths — each reaches a real message on a real phone in about five minutes, with no phone-number purchase and no carrier registration:

  1. Create an RCS test agent and send your first branded message — a branded RCS Business Messaging agent, a verified test device, and a rich outbound + inbound message. See references/hello-rcs-test-agent.md.
  2. Send an OTP with Notify — a one-time-passcode text through AWS-managed sending identities and pre-approved templates. See references/hello-notify-otp.md.

Beyond onboarding, this skill takes an identity to production registration in three steps:

  1. Find which registration a country requires — discover the registration type and its live field set for a target country and identity type, reconciled with the official docs. See references/registration-requirements-by-country.md.
  2. Run the registration lifecycle — the universal engine (create, derive fields, fill, submit, poll, recover from denial, resubmit) shared by every registration type, including RCS country launch. See references/registration-core-engine.md.
  3. Take an identity to production — exit the SMS sandbox, launch RCS in a country with carrier monitoring and SMS fallback, upgrade Notify to Advanced, and apply production hygiene (keywords, configuration sets, protect configurations). See references/customer-go-to-production-guide.md.

Guardrail — where this skill's files live (MCP vs local install)

This skill can be loaded two ways, and the references/ files resolve differently:

  • Loaded through the AWS MCP retrieve_skill tool. Reference files do not exist on the local filesystem. Fetch them via retrieve_skill with the file parameter (e.g., file="references/hello-rcs-test-agent.md"). Do NOT file_read these paths locally — they are not there.
  • Installed locally (e.g., .kiro/skills/aws-sms-voice/). Read references from the local skill directory using the relative paths shown in this file.

This applies only to the skill's own packaged files. User-created artifacts (brand-assets/, temp files) are always in the user's working directory.

Execute commands using available tools from the AWS MCP server when connected — it provides sandboxed execution, audit logging, and observability. When the MCP server is not available, fall back to the AWS CLI or shell as needed.

Choosing a path

You want to…Go to
Send rich, branded messages (cards, logo, two-way) to your own test phonehello-rcs-test-agent.md
Send a verification code / OTP to any supported phone, fastest possible pathhello-notify-otp.md
Find out which registration a country needs and what fields it requiresregistration-requirements-by-country.md
Create and submit a registration of any type (10DLC, toll-free, sender ID, RCS launch, Notify tier)registration-core-engine.md
Take an identity to production (sandbox exit, RCS carrier launch + fallback, Notify Advanced, hygiene)customer-go-to-production-guide.md

RCS test agents deliver only to verified test devices and require a short brand registration (auto-reviewed in minutes). Notify sends to any recipient in its supported countries immediately, but is limited to AWS-managed OTP templates. Pick RCS to explore rich messaging; pick Notify for the shortest path to a production-grade verification text.

Before you start (both paths)

The AWS MCP server is recommended for the best experience here — it runs the many pinpoint-sms-voice-v2 and sts calls with sandboxed execution, audit logging, and observability. It is not a hard requirement: every step also works with the plain AWS CLI or the AWS Agent Toolkit when the MCP server is not available.

  1. Credentials. Run aws sts get-caller-identity --region <REGION> (pass --region to use the regional STS endpoint; the global sts.amazonaws.com endpoint is legacy). If it fails, configure the user's auth (named profile / SSO / access keys — --profile <PROFILE> on every command if a profile is in play) and prefer an assumed IAM role with ephemeral credentials. Each reference file's Prerequisites carry the full auth, CloudTrail-audit, and CLI-freshness steps.
  2. Least-privilege access. These tasks need a small set of specific sms-voice: actions in the target account (the reference files enumerate the read/write actions each step uses — for example sms-voice:DescribeRcsAgents, CreateRcsAgent, CreateRegistration, CreateNotifyConfiguration, and SendNotifyTextMessage). Scope the policy to exactly the actions the chosen path uses; do not grant sms-voice:* or *FullAccess.
  3. Don't trust the CLI version. Treat any Invalid choice '<operation>' on a pinpoint-sms-voice-v2 command, at any step, as a stale/partial local service model (not a permissions or account problem). The RCS and Notify reference files (prerequisite 3) carry the full reactive resolution: clear a stale ~/.aws/models/pinpoint-sms-voice-v2/ override, else upgrade the AWS CLI, with a boto3 fallback. AccessDeniedException means the identity is missing the required sms-voice: permissions.

Each reference file is self-contained: it tracks the IDs you collect as session state, audits required inputs against the service before any submit, and ends with a Failure modes table and a Cleanup section. Follow the file for the path the user chose rather than improvising the API sequence — several steps fail silently or depend on service-version-specific field sets that must be read live.

Show full SKILL.md (286 more words)Show less

Security Considerations

  • Least-privilege IAM. Scope policies to specific sms-voice: actions; never use *FullAccess or sms-voice:* in production. The reference files enumerate the minimal read/write actions each onboarding path needs.
  • Ephemeral credentials. Assume an IAM role with ephemeral credentials; never embed long-lived access keys in code, config, or environment variables.
  • No secrets in messages or fields. OTP codes and message bodies can surface in CloudTrail and downstream logs — treat them as sensitive and never hardcode real codes. Enable CloudTrail logging for sms-voice API calls and encrypt CloudTrail logs and CloudWatch Log groups with a KMS CMK. Attach a configuration set with an event destination (CloudWatch Logs or Kinesis) for delivery monitoring before production traffic. Create CloudWatch alarms on key security signals (repeated AccessDeniedException, unusual send volumes, spend limit approaching threshold) for proactive alerting. Registration contact fields (email, phone, URLs) are submitted to partner review; use real but non-sensitive business contacts.
  • Consent and opt-out. Only message recipients who have opted in. Honor STOP / opt-out state; the RCS path shows how to check the opt-out list before sending. Test agents intentionally restrict delivery to verified test devices — do not work around that to reach unconsented numbers.
  • Spend limits and abuse. Default account spend limits are intentionally low; raise them deliberately and monitor. Notify enforces a non-adjustable per-day cap per destination — do not attempt to bypass it.
  • Destructive cleanup. The teardown steps delete agents, registrations, and configurations. They are irreversible — confirm with the user before running cleanup, and note RCS agents have deletion protection enabled by default in the onboarding flow.

Additional Resources

© aws, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 5 other files (references) in skills/specialized-skills/messaging-and-streaming-skills/aws-sms-voice of aws/agent-toolkit-for-aws.

  • SKILL.md
  • references/customer-go-to-production-guide.md
  • references/hello-notify-otp.md
  • references/hello-rcs-test-agent.md
  • references/registration-core-engine.md
  • references/registration-requirements-by-country.md

Open the folder on GitHubat commit df2ab44

Compare with similar skills

AWS Sms Voice next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

AWS Sms Voice compared with similar skills
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SageMaker Serving Image Selectionhuggingface/skills11k1 repos~4.6kAutomated safety check: PassApache-2.0
Cloud Cost Optimizationwshobson/agents40k14 repos~1.7kAutomated safety check: PassMIT
Python Environment Setup for SageMakerhuggingface/skills11k2 repos~1.7kAutomated safety check: PassApache-2.0
Agent Squad Python Guide2FastLabs/agent-squad7.8k—~4.7kAutomated safety check: PassApache-2.0

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Works with

Questions about AWS Sms Voice

What does AWS Sms Voice do?

Onboards RCS Business Messaging and Notify OTP via the pinpoint-sms-voice-v2 AWS CLI. AWS Sms Voice is an agent skill from aws/agent-toolkit-for-aws, published by the product's own GitHub organization. Onboards RCS Business Messaging and Notify OTP via the pinpoint-sms-voice-v2 AWS CLI.

How do I install AWS Sms Voice in Claude Code?

Run `npx skills add aws/agent-toolkit-for-aws --skill aws-sms-voice -a claude-code`. Or copy the skill folder (skills/specialized-skills/messaging-and-streaming-skills/aws-sms-voice in aws/agent-toolkit-for-aws) into .claude/skills/aws-sms-voice in your project. Claude Code loads it when a task matches its description.

How do I install AWS Sms Voice in Codex?

Run `npx skills add aws/agent-toolkit-for-aws --skill aws-sms-voice -a codex`. Or copy the skill folder (skills/specialized-skills/messaging-and-streaming-skills/aws-sms-voice in aws/agent-toolkit-for-aws) into .agents/skills/aws-sms-voice in your project. Codex loads it when a task matches its description.

Can I use AWS Sms Voice in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add aws/agent-toolkit-for-aws --skill aws-sms-voice -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/aws-sms-voice, .gemini/skills/aws-sms-voice, .github/skills/aws-sms-voice and .opencode/skills/aws-sms-voice in your project.

What does AWS Sms Voice need to run?

Going by SKILL.md and its folder, AWS Sms Voice needs the command-line tools its instructions call (aws).

Does AWS Sms Voice access the network?

SKILL.md names 1 domain. As links in the text: docs.aws.amazon.com. This is read from the text; nothing was executed.

Is AWS Sms Voice safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does AWS Sms Voice use?

AWS Sms Voice is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does AWS Sms Voice use?

About 2.5k tokens (SKILL.md is roughly 9.9k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 25k tokens, read only when the agent opens those files.

What are the alternatives to AWS Sms Voice?

Skills that share tags, products or a category with AWS Sms Voice: SageMaker IAM Role Preflight (huggingface/skills, 11k stars), SageMaker Serving Image Selection (huggingface/skills, 11k stars), Cloud Cost Optimization (wshobson/agents, 40k stars) and Python Environment Setup for SageMaker (huggingface/skills, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains AWS Sms Voice?

aws (a GitHub organization, an official publisher) maintains it in aws/agent-toolkit-for-aws, which has 2,830 GitHub stars. The repository holds 138 skills in this directory. The repository was last updated on October 9, 2026.

Source: aws/agent-toolkit-for-aws on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.