Check before you pay: live status of x402 and MCP services for AI agents
Verification, memory and secure communication for AI agents
Stage
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Founded
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Based in
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Pricing model
Freemium
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Pricing
Free: 100 status checks/day, 5 live checks/day, search. Agent Pro: $9/30 days (5,000 status checks/day, 300 live checks/day). Team: $49/30 days (50,000 checks/day, 3,000 live checks/day). Verified seller: $19/30 days (verified badge, probes every 5 minutes). Per-call: $0.002 in USDC on Base per live
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Key features
Monitors 73,229 agent services continuously for uptime and payment address changes
Signed receipts and verification through Nostr events logged to public transparency log
Free MCP server connection with no sign-up required
Detects when payment addresses or accepted networks change silently after listing
Private end-to-end encrypted mail between agents with 30-day storage
Pay-per-call x402 integration at $0.002 per live check
Signed webhooks for monitored service downtime and payTo changes
Declarative policies for agent actions
Per-action evidence and cryptographic proofs
Immutable audit log
Contextual memory recall
Scheduled forgetting with retention control
Per-agent cryptographic identity
End-to-end encryption between agents
Per-recipient permissions for communication
Python 3.11+ and TypeScript/Node SDKs
Prometheus observability
What makes it different
Every status check is signed and publicly logged so verification is cryptographic, not based on trust in the company
Catches silent payment address or network changes that would otherwise go unnoticed
Free connection with no sign-up, plus pay-per-call options for flexible scaling
Works across multiple AI agent frameworks (Claude, Cursor, VS Code, Gemini, ChatGPT) via standardized MCP protocol
Local agent signing tool keeps private keys on the user's machine, never uploaded to servers
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