Agent skill

BlockRun Phone and Voice

by BlockRunAI in BlockRunAI/blockrun-mcp

Looks up phone numbers for carrier and SIM-swap fraud signals, leases numbers and places AI outbound voice calls through BlockRun's local gateway.

MITAuto-check passedBackend & APIs

Install BlockRun Phone and Voice

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill phone -a claude-code

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

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp phone --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/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/phone .claude/skills/phone && 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/

Paste into Claude Code

Install the "phone" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/phone into .claude/skills/phone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phone", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/phone

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill phone -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp phone --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/phone .agents/skills/phone && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "phone" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/phone into .agents/skills/phone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phone", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill phone -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp phone --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/phone .cursor/skills/phone && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "phone" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/phone into .cursor/skills/phone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phone", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/BlockRunAI/blockrun-mcp.git --path skills/phone

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill phone -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp phone --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/phone .gemini/skills/phone && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "phone" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/phone into .gemini/skills/phone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phone", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp phone

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill phone -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/phone .github/skills/phone && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "phone" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/phone into .github/skills/phone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phone", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add BlockRunAI/blockrun-mcp --skill phone -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install BlockRunAI/blockrun-mcp phone --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/BlockRunAI/blockrun-mcp.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/phone .opencode/skills/phone && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "phone" agent skill from https://github.com/BlockRunAI/blockrun-mcp/tree/main/skills/phone into .opencode/skills/phone/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "phone", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: phone
GitHub stars: 392
Token cost: ~1.9k tokens
SKILL.md length: 603 words
Files: 1
Skills in repo: 17
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

Looks up phone numbers for carrier and SIM-swap fraud signals, leases numbers and places AI outbound voice calls through BlockRun's local gateway.

Works in 4 steps: Triage an inbound number for fraud → Spin up a US number with a 415 area code → Confirm an appointment via AI voice call → …
Checking whether a phone number is mobile, landline or VoIP
SKILL.md covers How to Call from MCP, Endpoint Catalog, Voice Call Body Fields and Voice Presets, plus 5 more sections
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

The skill works through ClawRouter's local proxy, with payment made automatically from the user's BlockRun wallet through x402. A lookup returns carrier, line type and country; a fraud check adds SIM-swap recency and call-forwarding signals and is meant to run before sending sensitive SMS codes or starting account recovery. Wallet-owned numbers are leased for 30 days, can be bought in the US or Canada, renewed, listed and released, and can serve as caller ID.

Outbound AI voice calls go through Bland.ai, with slash and CLI shortcuts and tools for call status. A warning stresses that placing a call has real-world effects, so it should happen only when you explicitly asked for one, and the server blocks emergency numbers. Each gateway request is charged to the wallet individually.

When your agent uses it

Checking whether a phone number is mobile, landline or VoIP
Screening a number for SIM-swap risk before account recovery
Leasing a US or Canadian number to use as caller ID
Placing an AI-powered outbound call after explicit approval

Example prompts

“Look up the carrier and line type for +14155552671.”
“Run a fraud check on that number before I send the login code.”
“Buy a US number with a 415 area code.”
“Check the status of the call you placed.”

Requirements

A funded BlockRun wallet for x402 payments
ClawRouter running locally

Workflow steps

4 steps, taken from the step headings in SKILL.md.

Triage an inbound number for fraud
Spin up a US number with a 415 area code
Confirm an appointment via AI voice call
List your wallet's leased numbers + release one

What it can do on your machine

Read from SKILL.md and the folder at commit a7a9b3c. 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
No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
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

BlockRun Phone and Voice loads about 1.9k tokens when it runs. Until then it costs about 71 tokens; SKILL.md has 603 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~71
When it runs · the whole SKILL.md, loaded when a task matches: ~1.9k

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 BlockRunAI/blockrun-mcp at commit a7a9b3c, republished under its MIT licence (© BlockRunAI). 603 words, ~1,890 tokens.

Download SKILL.mdSave it as .claude/skills/phone/SKILL.md (or your agent's skills folder).

name: phone
description: Use when the user wants phone-number intelligence (lookup, carrier, line type, SIM-swap / call-forwarding fraud signals), US/CA number provisioning (rent a phone number), or outbound AI voice calls (Bland.ai under the hood — schedule, confirm, follow-up). Pay per call in USDC.
triggers: phone lookup, carrier lookup, phone number intelligence, sim swap, call forwarding, phone fraud, buy phone number, rent phone number, us phone number, ai…

Phone & Voice

Two namespaces in one tool: /v1/phone/* for number intelligence + provisioning, /v1/voice/* for outbound AI calls. Pay per call in USDC. Any other path is refused before payment — the tool never reaches routes outside these two.

Phone numbers use E.164 format — + followed by country code and subscriber digits (US: +1 + 10 digits; UK: +44 + 10 digits; etc.). The examples below use <+E.164-number> as a placeholder — the LLM should substitute the actual number from the user's request, not copy the literal placeholder.

How to Call from MCP

const targetNumber = "<+E.164-number-from-user>"  // e.g. user said "call my doctor at 415-..."

// Lookup carrier + line type
blockrun_phone({ path: "phone/lookup", body: { phoneNumber: targetNumber } })

// Buy a 30-day US number
blockrun_phone({ path: "phone/numbers/buy", body: { country: "US", areaCode: "415" } })

// Outbound AI call (requires `from` — see below)
const r = await blockrun_phone({ path: "voice/call", body: {
  to: targetNumber,
  from: "<+E.164-number-you-own>",       // from phone/numbers/buy
  task: "Confirm appointment for Friday at 3pm with Dr. Wong.",
  voice: "june"
}})
// poll the result (free GET, no body)
blockrun_phone({ path: `voice/call/${r.call_id}` })

Endpoint Catalog

Phone intelligence + numbers (`/v1/phone/*`)

Path	Body	Price	Effect
`phone/lookup`	`{ phoneNumber }`	$0.0110	Carrier, line type (mobile/landline/VoIP)
`phone/lookup/fraud`	`{ phoneNumber }`	$0.0510	+ SIM-swap signals, call-forwarding detection
`phone/numbers/buy`	`{ country?: "US"\|"CA", areaCode? }`	$5.001	30-day lease, US or CA
`phone/numbers/renew`	`{ phoneNumber }`	$5.001	Extend lease 30 days
`phone/numbers/list`	`{}`	$0.0020	Your wallet-owned numbers
`phone/numbers/release`	`{ phoneNumber }`	free	Return to pool

Outbound AI calls (`/v1/voice/*`)

Path	Method	Body	Price
`voice/call`	POST	`{ to, task, from, voice?, max_duration?, language?, first_sentence?, wait_for_greeting? }`	$0.5410 flat
`voice/call/{call_id}`	GET (no body)	–	free poll

from is REQUIRED and must be a number your wallet owns. Provision one first with phone/numbers/buy ($5, 30-day lease). 400 errors from voice/call are almost always missing from.

Voice Call Body Fields

Field	Required	Default	Notes
`to`	yes	–	Destination E.164 number
`task`	yes	–	What the AI should do on the call (10–4000 chars)
`from`	yes	–	Your provisioned BlockRun caller-ID number (from `phone/numbers/buy`)
`voice`	no	`nat`	`nat` / `josh` / `maya` / `june` / `paige` / `derek` / `florian`
`max_duration`	no	5	Minutes, 1–30
`language`	no	`en-US`	Language code, BCP-47
`first_sentence`	no	–	Custom opening line for the AI
`wait_for_greeting`	no	false	Let recipient speak first, then AI starts

Voice Presets

Voice	Tone
`nat`	Neutral / professional male, default
`josh`	Friendly male
`maya`	Warm female
`june`	Calm professional female
`paige`	Energetic female
`derek`	Deep male
`florian`	European-accented male

Worked Examples

1. Triage an inbound number for fraud

blockrun_phone({ path: "phone/lookup/fraud", body: { phoneNumber: "+14155550150" } })

Returns carrier, line type, SIM-swap indicator, call-forwarding state. Cost: $0.0510.

2. Spin up a US number with a 415 area code

blockrun_phone({ path: "phone/numbers/buy", body: { country: "US", areaCode: "415" } })
// returns { phoneNumber: "+14155550199", expires_at: "..." }

Best-effort area code match. Cost: $5.001 for 30 days.

3. Confirm an appointment via AI voice call

// Step 0 (one-time): provision a number you'll use as caller ID
const { phoneNumber: myNumber } = await blockrun_phone({
  path: "phone/numbers/buy", body: { country: "US", areaCode: "415" }
})  // $5.001, 30-day lease

// Step 1: place the call (from is REQUIRED)
const r = await blockrun_phone({ path: "voice/call", body: {
  to: "+14155550100",
  from: myNumber,
  task: "Call Dr. Wong's office. Confirm the appointment for Sarah Chen on Friday May 24th at 3pm. If the time isn't available, ask for the next opening on Friday afternoon and report back.",
  voice: "june",
  max_duration: 5,
  wait_for_greeting: true
}})
// returns { call_id: "call_abc..." } — call runs async

// Poll until done
while (true) {
  const status = await blockrun_phone({ path: `voice/call/${r.call_id}` })
  if (status.status === "completed") {
    console.log(status.summary, status.transcript)
    break
  }
  await new Promise(r => setTimeout(r, 5000))
}

Cost: $0.5410 flat for the call. Status polling is free.

4. List your wallet's leased numbers + release one

const { numbers } = await blockrun_phone({ path: "phone/numbers/list", body: {} })
// Release the oldest
await blockrun_phone({ path: "phone/numbers/release", body: { phoneNumber: numbers[0].phoneNumber } })

Show full SKILL.md (244 more words)Show less

Best Practices

Always include task context the AI can act on. "Confirm appointment" is vague; "Confirm Sarah Chen's appointment for Friday May 24 at 3pm with Dr. Wong" is actionable.
Use wait_for_greeting: true for human-answered calls (most cases). Set to false for known-IVR / known-bot destinations to skip the greeting wait.
max_duration is a hard cap — the call ends regardless of conversation state. Default 5 min covers most scripted tasks.
from matters for trust** — using a provisioned BlockRun number you own (from numbers/buy) makes the call look less spammy than a random caller ID.

When NOT to Use

High-volume autodialer / robocall workloads — pricing is per-call ($0.5410 each) which doesn't amortize like wholesale telephony
Receiving inbound calls — numbers/buy provisions a number but inbound routing is not exposed via MCP; use Bland directly
Two-way human-to-human calls — this is for AI-driven outbound; for real-time human bridging, use a SIP provider

Notes

phone/lookup is cheap reconnaissance; phone/lookup/fraud is 5× the price but adds SIM-swap + call-forwarding signals you can't get from a basic carrier lookup
Voice calls return immediately with a call_id; the call runs in the background. Always poll voice/call/{call_id} to get the transcript
The poll endpoint is free — poll as often as you want, but every 5s is plenty
Calls that fail upstream (recipient hangs up, no answer) still charge the flat $0.5410 — Bland's pricing model

Reference

Phone endpoints: POST /v1/phone/*
Voice endpoints: POST /v1/voice/call and GET /v1/voice/call/{call_id}
Upstream: number intelligence + provisioning is internal; voice calls are Bland.ai

Files

Just SKILL.md in skills/phone of BlockRunAI/blockrun-mcp.

Open the folder on GitHubat commit a7a9b3c

Compare with similar skills

BlockRun Phone and 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.

BlockRun Phone and Voice compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
BlockRun Phone and Voice this skillBlockRunAI/blockrun-mcp	392	—	~1.9k	Automated safety check: Pass	MIT	yesterday
Kleros IPFS Uploadinternet-court/internet-court-skill	6.4k	—	~4.9k	Automated safety check: Notes	MIT	1 mo ago
Venice API Keysveniceai/skills	143	—	~3.8k	Automated safety check: Pass	MIT	2 days ago
Brigade Voice Callsspinabot/brigade	11k	—	~288	Automated safety check: Pass	MIT	4 days ago
Venice API Overviewveniceai/skills	143	—	~3.5k	Automated safety check: Pass	MIT	2 days ago
Nevermined PaymentsLeoYeAI/openclaw-master-skills	2.2k	—	~4.5k	Automated safety check: Notes	MIT	2 mo ago

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Works with

Questions about BlockRun Phone and Voice

What does BlockRun Phone and Voice do?

Looks up phone numbers for carrier and SIM-swap fraud signals, leases numbers and places AI outbound voice calls through BlockRun's local gateway. The skill works through ClawRouter's local proxy, with payment made automatically from the user's BlockRun wallet through x402. A lookup returns carrier, line type and country; a fraud check adds SIM-swap recency and call-forwarding signals and is meant to run before sending sensitive SMS codes or starting account recovery.

When should I use BlockRun Phone and Voice?

BlockRun Phone and Voice fits situations like: checking whether a phone number is mobile, landline or VoIP; screening a number for SIM-swap risk before account recovery; leasing a US or Canadian number to use as caller ID; placing an AI-powered outbound call after explicit approval.

How do I install BlockRun Phone and Voice in Claude Code?

Run `npx skills add BlockRunAI/blockrun-mcp --skill phone -a claude-code`. Or copy the skill folder (skills/phone in BlockRunAI/blockrun-mcp) into .claude/skills/phone in your project. Claude Code loads it when a task matches its description.

How do I install BlockRun Phone and Voice in Codex?

Run `npx skills add BlockRunAI/blockrun-mcp --skill phone -a codex`. Or copy the skill folder (skills/phone in BlockRunAI/blockrun-mcp) into .agents/skills/phone in your project. Codex loads it when a task matches its description.

Can I use BlockRun Phone and 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 BlockRunAI/blockrun-mcp --skill phone -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/phone, .gemini/skills/phone, .github/skills/phone and .opencode/skills/phone in your project.

What does BlockRun Phone and Voice need to run?

SKILL.md names no scripts, command-line tools or credentials: BlockRun Phone and Voice is instructions for the agent only. Our summary lists: A funded BlockRun wallet for x402 payments; ClawRouter running locally.

Does BlockRun Phone and Voice access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is BlockRun Phone and 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 BlockRun Phone and Voice use?

BlockRun Phone and Voice is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does BlockRun Phone and Voice use?

About 1.9k tokens (SKILL.md is roughly 7.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to BlockRun Phone and Voice?

Skills that share tags, products or a category with BlockRun Phone and Voice: Kleros IPFS Upload (internet-court/internet-court-skill, 6.4k stars), Venice API Keys (veniceai/skills, 143 stars), Brigade Voice Calls (spinabot/brigade, 11k stars) and Venice API Overview (veniceai/skills, 143 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains BlockRun Phone and Voice?

BlockRunAI (a GitHub organization) maintains it in BlockRunAI/blockrun-mcp, which has 392 GitHub stars. The repository holds 17 skills in this directory. The repository was last updated on October 6, 2026.

Source: BlockRunAI/blockrun-mcp on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install BlockRun Phone and Voice

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

Workflow steps

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Phone & Voice

How to Call from MCP

Endpoint Catalog

Phone intelligence + numbers (/v1/phone/*)

Outbound AI calls (/v1/voice/*)

Voice Call Body Fields

Voice Presets

Worked Examples

1. Triage an inbound number for fraud

2. Spin up a US number with a 415 area code

3. Confirm an appointment via AI voice call

4. List your wallet's leased numbers + release one

Best Practices

When NOT to Use

Notes

Reference

Files

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Related

Questions about BlockRun Phone and Voice

Phone intelligence + numbers (`/v1/phone/*`)

Outbound AI calls (`/v1/voice/*`)