Privi Call

One number per AI agent: route MCP calls to any agent, every call sealed in an on-chain log. 50 free calls a day; packs in USDC or PRIVI.

GitHub

Hosted MCP Server

npx add-mcp 'https://privi-call.onrender.com/mcp'

Installs into Claude Code, Codex, Cursor and more

Documentation

Privi Call

A call network for AI agents, plus the Privi phone line, with one public call log sealed on chain.

One number per agent. Privi's own agents are 100 Ledger, 101 Verify, 102 Anchor, 103 Quantum. Anyone can put an MCP server on the network for free with call_register_agent (numbers from 2000).
One tool call reaches any agent. call_agent(number, tool, arguments) routes the MCP call over a warm keep-alive connection pool and returns the answer with its call record. x402 payments for paid target tools are forwarded untouched.
Cheapest routing. Calls to Privi agents are always free. Calls to other agents: 50 free a day per caller, then $0.001 each from a prepaid key (call_credits_buy: 1,000 calls for $1.00 USDC via x402 on Base). One settlement per 1,000 calls keeps fees near zero, so every pack is margin.
Sealed call log. Every agent call and every phone turn is appended to a hash-chained log; the head hash is anchored on Base through Privi Anchor every 5 minutes. Arguments, results, transcripts and phone numbers appear publicly only as SHA-256 hashes (callers show as phone ***-1234). Anyone can recompute it: call_verify_log or GET /verify.
Phone line. Twilio calls /voice/inbound; the voice agent answers pricing and product questions from a fixed script (no per-call AI cost), takes pilot requests (transcribed into the private log), and puts callers through to Dario on "Dario" or 0. If ANTHROPIC_API_KEY is set, questions the script does not cover get a two-sentence answer from a small model.

Endpoints

Path	What
`/mcp`	MCP server (streamable HTTP)
`/`	Landing page with the live call log
`/calls.json`, `/calls/<id>`	Public call log
`/verify`	Chain check + latest on-chain checkpoint
`/directory.json`	Agents on the network
`/voice/inbound`, `/voice/turn`, `/voice/lead`, `/voice/after-dial`, `/voice/status`	Twilio webhooks (signature-checked)
`/admin/calls`	Full log with leads and phone numbers (`Authorization: Bearer $CALL_ADMIN_KEY`)
`/.well-known/agent-card.json`, `/.well-known/mcp/server-card.json`, `/llms.txt`	Discovery

Turning on the phone line (about $1.15 a month + $0.0085 a minute)

Create a Twilio account, buy a local number (a 810 area code fits Port Huron).
On the number, set A call comes in → Webhook → https://privi-call.onrender.com/voice/inbound (HTTP POST) and Call status changes → https://privi-call.onrender.com/voice/status.
In Render, on privi-call, set TWILIO_AUTH_TOKEN (Twilio console → Account → Auth token) and CALL_PHONE_NUMBER (the number you bought, e.g. +18105550100). Optional: ANTHROPIC_API_KEY.
Call it. Leads appear in /admin/calls?channel=phone.

Settings

CALL_DB_PATH, CALL_PUBLIC_URL, CALL_ADMIN_KEY, CALL_NETWORK (base), CALL_PAY_TO, CALL_FACILITATOR_URL, CDP_API_KEY_ID, CDP_API_KEY_SECRET, CALL_PACK_PRICE_USD (1.00), CALL_PACK_CREDITS (1000), CALL_FREE_PER_DAY (50), CALL_RATE_PER_MIN (120), CALL_OFFICIAL_AGENTS (JSON), TWILIO_AUTH_TOKEN, CALL_PHONE_NUMBER, CALL_FORWARD_NUMBER, CALL_VOICE, ANTHROPIC_API_KEY, CALL_LLM_MODEL, CALL_ANCHOR_URL, CALL_ANCHOR_API_KEY, CALL_ANCHOR_INTERVAL (300).

Credit sales stay closed (and nothing is given away) until the Coinbase CDP keys are set.