A fax API and MCP server for AI agents to send and receive faxes with receipts
Mail, DNS and web checks for developers and AI agents
Stage
Not given
Not given
Founded
2023
Not given
Based in
US
DK
Pricing model
Paid
Not given
Pricing
$0.039 per page sent, $0.019 per page received, $2 per fax number per month, $10 minimum wallet top-up, optional Agent workspace $19 per month, sandbox free. Prices as of 2026-10-28.
API checks from $0.002 to $0.08 per request in USDC. Browser checks are free and rate-limited. Bulk mail configuration checks at $0.024 per domain with minimum $0.03 per request.
Key features
Document preparation with PDF, image and text rendering
Price quotes bound to document, destination and sender
Authorization by person or delegated policy
Bounded retries with circuit breaker per route
Private inbox for received faxes with signed URLs
Idempotent API calls with Idempotency-Key header
Signed webhooks with event IDs
Sandbox for free testing before production
Document retention with 30-day default and deletion option
SPF, DMARC, DKIM and MX record checks
DNS record inspection with TTL and resolver information
TLS certificate checking
Security headers analysis
Free browser-based checks
Pay-per-request API in USDC
Bulk mail checks for up to 20 domains
Explained findings with evidence and freshness data
DNSSEC validation checking
What makes it different
Every fax send produces a receipt with provider evidence of delivery
Agents cannot exceed their own permissions or budget limits
International fax coverage to 213 destinations with transparent pricing
MCP server with 15 tools for seamless agent integration
Per-page pricing with no minimum subscription requirement
Read-only checks of public DNS and mail configuration with plain language explanations
Fixed prices known before payment
Structured results with machine-readable schemas for AI agents
Fax for Agents
Lookproof