agentmail vs Notabene: agentmail screens every payment in the agent path (MCP + HTTP + CLI) with a free tier and self-host option. Notabene is the travel-rule messaging network for VASPs.
Start freeBy · Reviewed July 2026 · · Based on public pricing pages and feature lists as of Q3 2026
| Capability | agentmail | Notabene |
|---|---|---|
| Built for AI agents (MCP + HTTP + CLI) | Yes | No |
| Free tier (5 checks/day) | Yes | No |
| Developer pricing from $19/mo | Yes | No |
| Open-source self-host | Yes | No |
| Per-call x402 / USDC payments | Yes | No |
| OFAC crypto wallet screening | Yes | No |
| OFAC name + country screening | Yes | No |
| Know-Your-Agent (KYA) | Yes | No |
| Travel-rule messaging (VASP-to-VASP) | No | Yes |
| Counterparty/beneficiary-owner verification | No | Yes |
| Enterprise contracts | Basic | Yes |
Pick agentmail for the pre-payment sanctions screen in the agent path. Pick Notabene for travel-rule messaging between regulated VASPs. Most compliant stacks end up needing both — screening and travel rule are different obligations.