phone

phone is a skill for Claude Code, Codex from BlockRunAI/ClawRouter. It costs 72 tokens per session (2,402 once invoked), scanned A, original, MIT.

A phone-number lookup and voice-calling tool that checks carrier details and fraud signals, manages phone numbers, and places AI-powered outbound calls.

In plain words
What is it for?
Use it to identify a number’s carrier, line type, country, and possible SIM-swap risk; buy or manage phone numbers; and place or check the status of AI voice calls.
Why use it?
It removes the need to use separate phone services for basic number checks and automated calls. Calls have real-world effects, so they should only be placed when explicitly requested.

Skill for Claude CodeCodex

Which agent this was written for is unclear — built for openclaw. Also seen: positional $N argument; built for openclaw.

Good fit Use it to identify a number’s carrier, line type, country, and possible SIM-swap risk; buy or manage phone numbers; and place or check the status of AI voice calls.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/blockrunai/clawrouter/phone
About the project

ClawRouter is a local service that chooses among language models for each request and handles payment for their use. Autonomous agents use it to access multiple LLM providers through one routing and billing system.

BlockRunAI/ClawRouter · 6,628 stars · on GitHub · npmjs.com

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.

Any agent
npx skills add BlockRunAI/ClawRouter --skill phone
Clone the repo
git clone --depth 1 https://github.com/BlockRunAI/ClawRouter

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 phone

README.md
[![agentmods](https://agentmods.dev/badge/skills/blockrunai/clawrouter/phone/github.svg)](https://agentmods.dev/skills/blockrunai/clawrouter/phone)
Your own site
<a href="https://agentmods.dev/skills/blockrunai/clawrouter/phone"><img src="https://agentmods.dev/badge/skills/blockrunai/clawrouter/phone/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.

agentmods 80×15 button for phone

Your own site · 80×15
<a href="https://agentmods.dev/skills/blockrunai/clawrouter/phone"><img src="https://agentmods.dev/badge/skills/blockrunai/clawrouter/phone.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,402 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 4 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 132
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 137
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 144
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
  • medium Prompt Injection · line 141
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
How audits are shown
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 $0.00072 $0.02402
Opus 5.5 $0.00029 $0.00961
Sonnet 5.5 $0.00014 $0.00480
Haiku 4.5 $0.00007 $0.00240

Measured 1mo ago against content hash 32f3d6df1039, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

phone 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 1mo 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.

- For programmatic polling, see the `voice_status` tool — for one-off CLI checks, hit `curl http://localhost:8402/v1/voice/call/{call_id}` directly
skills/phone/SKILL.md · 210 lines

How it starts

The opening of the file, as written. The whole thing — 210 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Phone & Voice

Phone-number intelligence (Twilio Lookup) and AI-powered outbound voice calls (Bland.ai) through ClawRouter's local proxy. Payment is automatic via x402 from the user's BlockRun wallet.

Shortcuts:

  • Slash: /cr-call +1<E.164> "<task>" [--voice nat] [--max-duration 5] [--from +1<owned-number>] [--language en-US]
  • CLI: clawrouter phone numbers list/buy/renew/release, clawrouter phone lookup <+E.164>, clawrouter phone fraud <+E.164>
  • Partner tools (LLM-callable): blockrun_phone_lookup, blockrun_phone_lookup_fraud, blockrun_phone_numbers_buy/renew/list/release, blockrun_voice_call, blockrun_voice_status

⚠️ Real-world side effects. blockrun_voice_call places a real outbound phone call to a real number. Only invoke when the user has explicitly asked for a call to be placed. Server enforces an emergency-number blocklist.


Phone Number Intelligence (Twilio)

Carrier + Line Type Lookup — $0.01

POST to http://localhost:8402/v1/phone/lookup:

{ "phoneNumber": "+14155552671" }

Returns carrier name, line type (mobile / landline / voip), country, mobile country/network codes. Use to verify whether a number is reachable, detect VoIP/spam patterns, or route SMS appropriately.

Fraud Risk Check — $0.05

POST to http://localhost:8402/v1/phone/lookup/fraud:

{ "phoneNumber": "+14155552671" }

Adds SIM-swap recency and call-forwarding signals on top of carrier+line type. Run this before sending sensitive SMS codes or initiating account-recovery flows — a number flagged for recent SIM swap is high-risk for account takeover.


Wallet-Owned Phone Numbers

Numbers are leased for 30 days, bound to the wallet's payer address. Use one as the from parameter of voice_call to present a stable caller ID.

Buy — $5.00 / 30 days

POST to http://localhost:8402/v1/phone/numbers/buy:

{ "country": "US", "areaCode": "415" }

country is "US" or "CA". areaCode is optional (3-digit, best-effort match). Returns { phone_number, expires_at, chain }.

Read the full file on GitHub · 210 lines

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. 1mo ago Changed · +1 lines 32f3d6df1039
  2. 1mo ago First seen · 209 lines · 72 tokens per session scan A a550c4796a33

Subscribe to this mod's changes

phone is a skill published in the GitHub repository BlockRunAI/ClawRouter (6,628 stars, last pushed 2d ago), licensed MIT. It adds 72 tokens to every session and 2,402 once invoked, about $0.0003 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 2026-08-30.