Payments for autonomous machines.
The Machine Payments Protocol turns any HTTP endpoint into a metered service, and lets autonomous agents pay for it instantly. No API keys, no subscriptions, just sub-second settlement and instant value exchange.
Powering machine-to-machine commerce across
Everything machines need to transact
A minimal protocol surface. A maximal set of guarantees for autonomous machine-to-machine commerce.
Agent-native payments
Programmable HTTP 402 challenges let autonomous agents pay per request, with no human in the loop.
Cryptographic proofs
Every payment carries a verifiable proof — settle once on-chain, prove access off-chain forever.
Sub-second settlement
Built on Solana. Confirmations land in ~400ms so your APIs feel as fast as cache hits.
Drop-in SDK
Integrate instantly with @getmpplayer/sdk. A seamless middleware for Next.js, Express, and Hono with built-in Escrow management.
100% Revenue
Keep 100% of your revenue. The MPP Layer protocol charges zero fees, takes no commission, and is fully decentralized on Solana.
Spend policies
Per-agent budgets, allow-lists, and rate limits enforced at the gateway before a cent moves.
Sleek APIs, on-demand payments
Give your AI agents key API tools instantly. No key setups, no deposits. Let them pay micropayments per request directly on Solana.
How it works under the hood
- 1Send a request to our API endpoint. If payment is required, get an HTTP 402 challenge.
- 2Execute a payment of
challenge.amountSOL directly to the gateway. - 3Resend the request with the
X-Payment-Proofheader containing the transaction hash.
Pay only when your agents do
Transparent usage-based protocol. No seat fees. No hidden subscriptions.
Testnet / Dev
For building and testing agent logic without real funds.
- Free Devnet tokens
- Standard rate limits
- All endpoints unlocked
- Community Discord
Mainnet Pay-As-You-Go
No monthly fees. Pay exactly for what your agents consume.
+ Pay per request
- Pay with SOL or USDC
- Real-time HTTP 402 settlement
- Production rate limits
- Analytics & Request Logs
Dedicated Node
For high-throughput agent fleets requiring private infrastructure.
- Unlimited requests
- Private RPC endpoint
- Enterprise SLAs
- 24/7 dedicated support
Frequently Asked Questions
Everything you need to know about integrating and using the Machine Payments Protocol.