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Documentation Index

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Nevermined adds a payment and entitlement layer to any monetizable service (agent APIs, MCP tools, or static assets). Attach a payment plan and each inbound request is validated, metered, and settled in real time. No checkout flows, no manual invoicing, no distinction between human and agent callers.

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What Can You Monetize?

Nevermined validates each inbound request against the caller’s entitlement before your code runs:
  • Agent APIs - AI agents exposed as HTTP endpoints (REST, webhooks, etc.)
  • MCP Tools - tool endpoints served via the Model Context Protocol
  • Static Assets - gated resources like files, datasets, or downloads
Every monetizable service has:
  • A public endpoint (the URL callers hit)
  • A payment plan (pricing and access terms)
  • A validation step (Nevermined checks entitlement per request)
  • Usage tracking (automatic metering on every call)

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Standards and protocols (x402)

Nevermined supports modern payment standards used in agentic commerce. In particular, x402 standardizes how clients and servers negotiate payment-required requests, enabling smoother, interoperable monetization flows. If you’re integrating with x402-compatible clients/servers, see the x402 integration.

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What is a Payment Plan?

A payment plan defines how users pay and what they’re entitled to consume:

Payment Method

Cards (Visa or Stripe via NVM Pay) or Crypto (USDC, EURC on-chain).

Pricing Model

Fixed (same cost per call) or Dynamic (builder-defined per request, or cost+margin).

Plan Type

Prepaid (buy upfront) or Pay-as-you-go (charge per request).

Payouts

Merchants receive fiat payouts via Stripe Connect or crypto directly to their wallet. Connect your account in the Nevermined App.
Users buy a plan upfront. Each API call deducts from their balance:
  • Fixed pricing: every request costs the same (e.g., $10 for 100 requests at $0.10 each)
  • Dynamic pricing: charge different amounts per request based on complexity, or apply cost+margin automatically
No upfront purchase. Charge the user’s card or wallet on each request:
  • Cards: agents charge via card delegation (NVM Pay)
  • Crypto: settle in USDC or EURC on-chain
Add expiration to any plan:
  • Duration: set expiry (days, months, years)
  • Hybrid: combine usage limits with time limits (e.g., 1,000 requests valid for 30 days)
Charge on success: meetings booked, leads qualified, issues resolved. Only bill when your agent delivers a defined outcome or milestone.

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Examples

  • Customer Support Agent: $49/month unlimited, or $10 for 1,000 calls
  • Dataset Access: $99 for 30-day access
  • Agent API: $0.10/call prepaid, or $0.15/call PAYG
  • Sales Agent: $5 per qualified lead (outcome-based)

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How It All Works Together

1

Register your API

Define your service interface and metadata using the Payments SDK.
2

Create a payment plan

Set payment method, pricing model, and plan type using the Payments SDK.
3

Users or agents purchase access

Purchase a prepaid or pay-as-you-go plan, paid with card (NVM Pay) or crypto.
4

Validate before delivery

Validate entitlement before serving requests or granting access.
5

Track and settle

Automatically track usage per request and settle payments.

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Payment Methods

Cards

Pay with real Visa or Stripe cards via NVM Pay. Agents charge against spending mandates with per-transaction ceilings and usage limits. No crypto wallet needed.

Crypto

USDC, EURC, or any ERC-20 token on-chain. Lowest fees and full transparency for crypto-native users.

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Merchant Onboarding

Payouts

Merchants receive fiat payouts via Stripe Connect or crypto directly to their wallet. Connect your account in the Nevermined App.

Security & Compliance

ISO 27001, SOC 2 Type II, PCI SAQ-D, GDPR compliant. Card data captured via PCI Level 1 infrastructure (VGS). Nevermined never stores raw card numbers.