Self-host the payment path
Run x402 endpoints and AMP channels inside your own infrastructure. No platform sits between your agent and your customer's payment.
QBT Labs vs Nevermined: an open-source AI agent payment infrastructure alternative
Teams choosing how AI agents pay for APIs, tools, and services often compare managed platforms with self-hosted open-source stacks. QBT Labs builds the open-source path: x402-compatible payments, AMP-style channels, encrypted signer isolation, and a spend policy engine for production agent workflows.
Capability
QBT Labs
Nevermined (as referenced by users)
Primary delivery
Open-source SDKs and MCP tooling teams self-host
Managed agent payment platform
Per-request payments
x402-compatible HTTP 402 flow via @qbtlabs/x402
Platform-managed credit and subscription rails
High-volume channels
AMP-style payment channels (in development) for repeated calls
Platform-mediated metering
Spend policy
Per-agent budgets, daily caps, recipient allowlists, chain restrictions
Platform policies configured in dashboard
Signer model
Encrypted vault with process-isolated signer over Unix socket
Custodial / hosted signer
Receipts and audit
Per-call receipts with request ID, amount, asset, chain, recipient, status
Platform reporting
Chain coverage
Base, Solana, Cardano; AMP roadmap adds Hydra L2
Platform-defined chain support
Facilitator choice
Bring your own facilitator or run your own
Platform facilitator
Licensing
MIT open source
Commercial platform
Policy that protects production
Per-agent budgets, daily caps, recipient allowlists, chain restrictions, and audit logs are first-class — not features bolted on top of a wallet.
Open protocol, open source
MIT-licensed packages. Any x402-compatible facilitator or client interoperates with QBT-Labs-powered endpoints.
When QBT Labs is the better fit
- You want to monetize an API for autonomous agents without onboarding to a third-party platform.
- You need a signer that never exposes raw private keys to agent memory.
- You need budget, allowlist, and audit guarantees that hold up under compliance review.
- You operate on Base, Solana, or Cardano, or want to add chains on your own schedule.
- You want to choose or run your own x402 facilitator.
- You want machine-readable receipts that map cleanly to billing and reconciliation.
Build agent payments without the platform lock-in
QBT Labs ships open-source x402-compatible payment tooling, AMP-style channels, an encrypted vault with process-isolated signer, and a spend policy engine — production-ready primitives for autonomous agent payments.