| name | phone |
| description | Verify phone numbers (carrier + SIM-swap fraud signals) and place AI-powered outbound voice calls via BlockRun's gateway (Twilio + Bland.ai). Trigger when the user asks to look up a number, check fraud risk, buy/rent a phone number, or place an AI voice call. Payment is automatic via x402 from the wallet. |
| triggers | ["blockrun phone","blockrun voice","voice call","outbound call","ai phone call","ai voice call","phone number lookup","phone number verification","carrier lookup","sim swap","sim-swap detection","phone fraud check","buy phone number","rent phone number","twilio number","bland.ai","blockrun bland"] |
| metadata | {"openclaw":{"emoji":"📞","requires":{"config":["models.providers.blockrun"]}}} |
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 }.
Renew — $5.00 / +30 days
POST to http://localhost:8402/v1/phone/numbers/renew:
{ "phoneNumber": "+14155551234" }
Run before the existing lease expires. Numbers not renewed are released back to the pool.
List — $0.001
POST to http://localhost:8402/v1/phone/numbers/list with an empty body. Returns an array of { phone_number, expires_at, country, chain }. The CLI surfaces this as a human table with renew-soon warnings:
$ clawrouter phone numbers list
Active numbers (2):
+14155551234 US expires 2026-06-12 (in 27d)
+12135555678 US expires 2026-05-18 (in 2d) ⚠ renew soon
Release — free
POST to http://localhost:8402/v1/phone/numbers/release:
{ "phoneNumber": "+14155551234" }
No refund. Use only when the user has explicitly asked to give up the number.
AI Voice Call (Bland.ai)
Place a Call — $0.54 flat (up to 30 min)
POST to http://localhost:8402/v1/voice/call:
{
"to": "+14155552671",
"task": "Call and confirm the 3pm Thursday meeting; reschedule if they can't make it.",
"voice": "nat",
"max_duration": 5,
"from": "+14155551234",
"language": "en-US"
}
Required: to (E.164), task (free-form natural language — what the AI should say or accomplish).
Optional:
| Field | Default | Notes |
|---|
voice | nat | Presets: nat, josh, maya, june, paige, derek, florian. Or a custom Bland voice ID. |
max_duration | 5 | Maximum minutes (1–30). Price is flat $0.54 regardless of actual duration. |
from | auto-picked | Must be a wallet-owned number from phone_numbers_list. If omitted, server auto-picks from wallet's active numbers — see auto-pick rules below. |
language | en-US | Any spoken-language ISO code, e.g. es-ES, zh-CN, de-DE. |
from auto-pick rules (server-side, after payment verification):
| Wallet active numbers | Behavior |
|---|
| 0 | 403 no_active_number — response includes buy_endpoint + marketplace URL so caller can provision first |
| Exactly 1 | Auto-used as caller ID |
| 2+ | 400 ambiguous_from — response lists all active numbers; retry with from set explicitly |
If an explicit from is supplied but the wallet doesn't own it, the response is 403 with a clear ownership-mismatch message (no charge taken when validation fails).
Response is fire-and-forget:
{
"call_id": "call_abc123",
"poll_url": "/v1/voice/call/call_abc123",
"status": "queued"
}
The call runs in the cloud for up to max_duration minutes. The HTTP response returns immediately — do not wait for the call to finish. Poll voice_status every 10–30s to retrieve transcript and recording when the call completes.
Poll Status — free
GET http://localhost:8402/v1/voice/call/{call_id}. Returns:
{
"call_id": "call_abc123",
"status": "completed",
"duration_seconds": 47,
"transcript": [
{ "role": "assistant", "text": "Hi, this is calling to confirm tomorrow's 3pm meeting..." },
{ "role": "user", "text": "Yes, that still works." }
],
"recording_url": "https://..."
}
status progresses through queued → in_progress → completed or failed. The transcript array and recording URL only appear on completed. On failed, an error field describes why.
Example Agentic Flows
Verify before texting:
User: "Send a verification code to +1 415 555 0123"
Agent: First call blockrun_phone_lookup_fraud({ phoneNumber: "+14155550123" }). If sim_swap.last_sim_swap is within the past 7 days, refuse and ask the user to confirm out-of-band. Otherwise proceed.
Appointment confirmation:
User: "Call my client at +1 415 555 0123 and confirm tomorrow's 3pm meeting"
Agent: blockrun_voice_call({ to: "+14155550123", task: "Call to confirm the 3pm Thursday meeting; if they can't make it, offer to reschedule for Friday morning.", max_duration: 5 }). Returns call_id. Tell the user: "Calling now — I'll have the transcript in a few minutes." Then blockrun_voice_status({ callId }) every 30s until completed, then summarize the transcript.
Acquire dedicated caller ID:
User: "Buy me a San Francisco number for the next 30 days"
Agent: blockrun_phone_numbers_buy({ country: "US", areaCode: "415" }). Confirm the assigned number to the user and warn them: "Lease expires in 30 days, costs $5 to renew."
Notes
- Payment is automatic via x402 — deducted from the user's BlockRun wallet on every call
- If a call fails with a 402, tell the user to fund their wallet at blockrun.ai
- Phone numbers are real, regulated resources — numbers bought are reachable from any phone within ~60 seconds of purchase
- Bland.ai's emergency-number blocklist is enforced server-side; ClawRouter does not duplicate it but trusts upstream
- Recordings and transcripts are retained by Bland.ai; ClawRouter does not download them locally (returns the upstream URL)
- For programmatic polling, see the
voice_status tool — for one-off CLI checks, hit curl http://localhost:8402/v1/voice/call/{call_id} directly
