NEUS Docs

Two proofs: agent-identity (agent signs) and agent-delegation (approving account signs). Same person or two accounts. Instead of every app rebuilding agent identity and permissions, NEUS agents carry their own proof. To bill hosted checks through your product, complete Quickstart (create a portal under profile → Portals). For backend receipt creation after user approval, see Integrations. Agent concepts: Agent concepts

MCP

Check

neus_context → neus_agent_link with both agentWallet and agentId. Done if linked: true.

Create

neus_agent_create when proofs are missing.

Finish

Follow next_action. Dedicated wallets sign identity first; the approving account finishes delegation.

Confirm

neus_agent_link until linked: true.

SDK

For a dedicated agent wallet, keep the identity receipt from the agent-signed step, then build a delegation-only hosted callback:

import { getHostedAgentCreateUrl } from '@neus/sdk';

const hostedUrl = getHostedAgentCreateUrl({
  agentId: 'workflow-orchestrator',
  agentWallet,
  controllerWallet,
  identityQHash,
  allowedActions: ['read_context', 'execute_jobs'],
  deniedActions: ['send_message'],
  runtimePolicy: { requiresHumanApproval: true },
  returnUrl: 'https://app.example.com/agents/callback',
});

Step	Page
Register	Agent identity
Delegate	Agent delegation
Billing	Billing
Check	Integration

Schemas: docs/verifiers/schemas/

Agent that pays

To let an agent pay for metered APIs autonomously, give its delegation a spend cap and the payments scope, then let it settle pay-per-call requests:

Delegate with scope: 'payments:x402', allowedPaymentTypes: ['x402'], and a maxSpend cap — see Agent delegation.
The agent calls your priced endpoint; a 402 returns the price.
The agent pays and retries with a PAYMENT-SIGNATURE header — full flow in x402 pay-per-call.

The maxSpend cap is enforced as a hard limit, so the agent can never exceed its budget.

Agents overview

Start here.

MCP overview

Tool list and auth.

Playbooks

Verifiable Agents

MCP

SDK

Agent that pays

Agents overview

MCP overview

​MCP

​SDK

​Agent that pays

​Related

Agents overview

MCP overview

MCP

SDK

Agent that pays

Related