Free plan: $0/mo with 2,000 messages per month on WhatsApp, Telegram, Instagram and Messenger, $2 of SMS/voice/email credit, and AI agents. Pro: $20/mo with $20 monthly usage credit, unlimited channels, phone numbers from $0.63/mo, transactional email $0.40/1,000, marketing email $0.80/1,000, SMS fr
Free access to the directory API and MCP server. Listing a new API costs $0.25 USDC from October 26, 2026, which includes one real purchase verification.
Key features
AI agents across channels
Voice agents with phone answering
Transactional and marketing email
OTP and verification codes
Phone number provisioning in 200+ countries
WhatsApp Business templates and media
Broadcast campaigns and scheduling
Shared inbox and contact management
Serverless functions on events
Agent memory and knowledge base
Real USDC purchases to verify API delivery
Paid-verified status with Base blockchain transactions
Reputation scores from recency-weighted probe pass rates
Continuous endpoint probing every 2 minutes to 8 hours
Free discovery API with three-line pre-spend checks
MCP server integration with search and detail tools
Machine-readable catalogue in NDJSON format
Purchase outcome tracking and transaction visibility
Dispute resolution and result correction in public
Automatic payment address rotation detection
What makes it different
Single API for 8+ messaging channels instead of multiple vendor integrations
Up to 92% lower costs than alternatives like Twilio and Resend
AI agents that set up infrastructure automatically
Five-minute onboarding from signup to first message
No platform markup on Meta WhatsApp pricing
Only directory that pays with real USDC to verify delivery
Public ledger of all purchases and transactions on blockchain
Zavu
nohumans.directory