Payload

Both Payload API monetization kits in one bundle — save $29 versus buying separately.

You get the x402 Paid API Starter Kit ($79): drop-in Express middleware that charges AI agents per API call, with 402 responses, payment verification, usage ledger, and discovery manifest.

Plus the MCP Monetization Kit ($69): per-tool-call USDC payments for MCP servers, with free quotas, usage ledger, and x402-style payment flow.

Both kits are non-custodial by design — they never hold private keys or touch funds. Each ships with a working example server, automated tests (all passing), and a README with a 5-minute quick start.

Developer tooling for API monetization (HTTP 402 payments). Not investment or financial advice.

LICENSE: Perpetual single-seat commercial license for your own commercial projects. Prohibited: redistributing, reselling, sublicensing, sharing the source, or publishing it to a public repository. 7-day refund available if the product is materially not as described or cannot be made functional after reasonable support. Change-of-mind refunds are not available after download or access. Full text: LICENSE.txt inside each package.

Support: kyler.simmons.partners@gmail.com — Sold by Payload. One-time price. Yours forever. No subscriptions, no lock-in.