SV Number agent skill
Your agent hits a signup wall: "we sent a code to your phone". It has no phone. This skill gives it one on demand, in the country the service expects, and reads the code back over the API.
One markdown file. No SDK, no dashboard, no human at the keyboard.
> Read the sv-number skill and register me a Telegram account on an Indonesian number.
ordered +62 838 1234 5678
code 123456
account created
What it lets an agent do
Sign up anywhere, not just where you live
Most verification checks look at the country the number came from. An Indonesian marketplace refuses a US number before the SMS is even sent. The agent names the country in the request and that whole class of failure disappears.
The catalogue carries 200+ countries, the widest coverage in this category. You do not have to take that on faith, and you should not: one call returns the list, so count it yourself.
curl -s "https://sms-verification-number.com/stubs/handler_api?api_key=$SVN_API_KEY\
&action=getCountryAndOperators&lang=en" | jq length
Read the code, not an inbox
The API returns the verification code itself, already parsed out of the message. There is no regex to write per service and nothing to fix when a service rewrites its wording.
Pay for the code, not for the month
Money is held when the number is ordered and charged when the code lands. Nothing in 20 minutes and it returns to the balance by itself.
Keep the number private
One activation, one holder. Nobody else receives its codes, which is exactly the part that free shared pools get wrong.
Steer by what the pool is doing, not by price
The catalogue call returns, per service and country, the share of codes that arrived for other users and how many numbers are live right now. Where the share is measured, an agent that reads it stops paying for countries that never deliver; where it is not, the size of the live pool tells the same story.
Finish the second factor too
When the account asks for an authenticator, the agent stores the TOTP secret next to its API key and computes the six digits locally, by RFC 6238. The secret never leaves the machine.
Start
curl -O https://raw.githubusercontent.com/sv-number/skills/main/sv-number/SKILL.md
export SVN_API_KEY=your_key_here
The layout follows the Agent Skills specification:
a directory named after the skill, holding SKILL.md and scripts/. Point any runner at
it and it works as is, in Claude Code, Codex or anything else that reads a skill. The key comes from
your profile after
signup. The balance has to be funded:
there is no free tier on this API.
The cycle
getNumber -> ACCESS_NUMBER:id:phone order a number, money is held
getStatus -> STATUS_WAIT_CODE poll every 3 to 5 seconds
-> STATUS_OK:123456 the code
setStatus 6 -> ACCESS_ACTIVATION done, the charge stays
setStatus 8 -> ACCESS_CANCEL nothing came, money back
Runnable versions: sv-number/scripts/order_number.py
and sv-number/scripts/order_number.mjs.
What it is not
Receiving codes is the whole job. These numbers do not send SMS and do not take calls, and they are not for banking, payment or government accounts. If your agent needs a permanent number that holds a conversation with people, you want a carrier product instead.
Rules the skill enforces
The API key stays in the agent's environment and goes nowhere else. An activation is used
for the service it was ordered under, because that is what keeps delivery rates high for
everyone. Every activation gets closed: setStatus 6 when the code was used, setStatus 8
when nothing arrived. A forgotten activation holds money until it expires.
Links
- Skill file:
sv-number/SKILL.md - The same skill as a page: https://sms-verification-number.com/en/agent-skill/
- Full API reference: https://sms-verification-number.com/en/api-sms-activate/
- Live coverage and prices: https://sms-verification-number.com/en/number-for-ai-agents/
MIT for the skill and the examples. The service behind it is commercial.