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.
npx skills add voidmobcom/voidmob-mcp --skill voidmobgit clone --depth 1 https://github.com/voidmobcom/voidmob-mcpWrote 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.
[](https://agentmods.dev/skills/voidmobcom/voidmob-mcp/voidmob)<a href="https://agentmods.dev/skills/voidmobcom/voidmob-mcp/voidmob"><img src="https://agentmods.dev/badge/skills/voidmobcom/voidmob-mcp/voidmob/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.
<a href="https://agentmods.dev/skills/voidmobcom/voidmob-mcp/voidmob"><img src="https://agentmods.dev/badge/skills/voidmobcom/voidmob-mcp/voidmob.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00163 | $0.03956 |
| Opus 5.5 | $0.00065 | $0.01582 |
| Sonnet 5.5 | $0.00033 | $0.00791 |
| Haiku 4.5 | $0.00016 | $0.00396 |
Grade A, and why
voidmob scanned grade A with 1 finding 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 14d 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.
Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
description: Receive an SMS verification code (OTP) on a real US non-VoIP mobile number, rent a number for days or keep a private dedicated number (several countries, SMS from any service), route traffic through a 4G/5G How it starts
The opening of the file, as written. The whole thing — 200 lines — stays where its author put it; the contents beside it link to each section on GitHub.
VoidMob
One prepaid USD balance buys:
- SMS verification: a real US non-VoIP mobile number for one service, open up to 15 minutes. If no SMS arrives, the price is refunded automatically.
- Long-term rental: a US number for one service for 3, 7, 14 or 30 days.
- Dedicated number: a private number in one of several countries, billed monthly, receives SMS from any service.
- Mobile proxy: shared 4G/5G IPs billed per GB (rotating or sticky, country and city targeting), or a Standard dedicated modem with unmetered data.
- eSIM: mobile data plans for travel, installed by QR code or LPA string.
A human funds the balance with crypto in the dashboard. No KYC. REST API: https://dashboard.voidmob.com/api/v1 (OpenAPI: https://dashboard.voidmob.com/api/v1/openapi.json, reference: https://dashboard.voidmob.com/api-reference.html).
When to use
- The user needs an SMS code (OTP) for a sign-up or login on their own account and wants a real mobile number, not VoIP.
- The user wants a number to keep for days or month to month to receive SMS.
- The user needs requests to leave from a mobile carrier IP in a given country (geo testing, localized content, their own automation).
- The user needs mobile data abroad.
When not to use
- Sending SMS or placing calls: the API only receives SMS.
- Adding funds: there is no deposit endpoint. A human tops up at https://dashboard.voidmob.com/wallet.
- Anything under "Responsible use" below. Decline it and say why.
Setup (a human does this once)
- Check for the key without printing it:
[ -n "$VOIDMOB_API_KEY" ] && echo "key set" || echo "key missing" - If it is missing, stop and tell the user: create a key at https://dashboard.voidmob.com/developers/api-keys, add it to this agent's environment or secret store as
VOIDMOB_API_KEY, and fund the balance at https://dashboard.voidmob.com/wallet. Do not ask them to paste the key into the chat or into a file. - Never print, log, echo or save the key, never put it in a URL, and never run curl with
-vor--trace(they print the Authorization header).
What ships with it
5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 14d ago First seen · 200 lines · 163 tokens per session scan A d65b7b26f90a
voidmob is a skill published in the GitHub repository voidmobcom/voidmob-mcp (28 stars, last pushed 14d ago), licensed MIT. It adds 163 tokens to every session and 3,956 once invoked, about $0.0007 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-01.
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