Agent proposes an action
Send an email, deploy code, approve a refund, delete a record, publish content or call a paid API.
action: "refund_customer"Put a verifiable decision boundary between AI agents and the real world — before they send email, move money, deploy code, change data, publish claims or call external systems.
Trust score 94 / 100 · evidence preserved before execution.
Send an email, deploy code, approve a refund, delete a record, publish content or call a paid API.
action: "refund_customer"NexusEval checks the request, evidence, policy, scope and risk. The Gate produces an explicit decision.
decision: "WARN"ALLOW continues. WARN can escalate. BLOCK stops execution. Every decision can carry a proof receipt.
receipt: "id_7F92"The control layer is most valuable where an agent crosses from thinking into consequences.
Check audience, claims and policy before a message leaves your systems.
Gate irreversible or high-impact changes before execution.
Verify amount, recipient, policy threshold and duplicate-risk.
Require stronger evidence for destructive writes than read-only actions.
Check evidence, scope and claim quality before publication.
Assess vendor, endpoint and payment requirements before autonomous spend.
0x756A9769…64A0551cMachine-service payments are configured for USDC on Base. The settlement address is public so on-chain activity can be independently inspected.
View on BaseScan ↗NexusEval is already live as the machine-facing engine: procurement preflight, launch checks, deterministic utilities, model/data routes and x402-paid resources.
// before the real-world action POST /api/procurement-passport/instant { "vendor": "External Agent API", "endpoint": "https://api.example.com/action" } HTTP 402 Payment Required → exact price quoted → x402 authorization → verified delivery // machine-readable decision { "decision": "WARN", "score": 81, "evidenceHash": "sha256:…" }
Autonomous callers receive an exact HTTP 402 payment requirement and can settle per request on Base.
Human customers and enterprise pilots are quoted by scope, then receive a server-created secure payment link.
You should not have to infer what the platform does from marketing copy. Inspect the live routes and integration surfaces directly.
Approved users can sign in with a one-time code. No password to reuse or leak.
A control and trust layer designed to sit between an autonomous AI system and consequential external actions. The core pattern is evaluate → decide → preserve evidence → execute.
NexusEval is live with public operational status, OpenAPI contracts, x402 discovery, paid agent endpoints and a 350-tool deterministic catalog. The broader Immortal Gate, Trust Score and Proof Receipt model is the product layer being built around that live engine.
The machine-payment configuration is public: network, asset, recipient and paid routes are visible in the x402 manifest. We deliberately do not count 402 responses, crawlers or tests as revenue. On-chain activity can be inspected independently through the public Base settlement address.
Yes. Private access is invitation-based and passwordless. Approved users receive a short-lived one-time code by email.