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Saylor Innovations Guide Library — x402 Paid Endpoint Builder
x402
Saylor Innovations Guide Library — x402 Paid Endpoint Builder is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-02).
Returns a guide on how to build AI-payable (x402 protocol) HTTP endpoints that accept micropayments from AI agents
Price / call$0.01
Success—
StatusUnknown
How this service works
x402 Paid Endpoint Builder. A build method for x402-payable endpoints: defining the paid unit and free preview, choosing scheme/network/asset/price, implementing the unpaid 402 challenge, verifying and settling before irreversible fulfillment, making retries idempotency-safe, publishing discovery metadata, and passing a full negative-test gate before mainnet. Includes a worked margin-negative pricing example.
Output
Returns a JSON document containing a guide ID, title, content body explaining how to build x402-compatible paid HTTP endpoints for AI agents, an optional price field, and a license string. The body text contains instructional content on implementing the x402 micropayment protocol.
Example use cases
Building a pay-per-call AI API
“I want to monetize my API so AI agents can pay me per request in USDC — can you fetch the Saylor Innovations x402 paid endpoint builder guide so I can follow the setup steps?”
Learning x402 protocol for agents
“I've heard about the x402 payment protocol for AI agents but don't know where to start — grab that x402 paid endpoint builder guide from Saylor Innovations so I can read through it.”
Integrating agent-friendly payments into a service
“I'm building a knowledge base API and want AI agents to be able to pay for each lookup automatically — get me the Saylor Innovations guide on building x402-enabled endpoints so I can see how it works.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/kb/x402-paid-endpoint?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative, structured guidance on implementing the x402 micropayment protocol for AI-callable APIs, especially from the Saylor Innovations knowledge base. Prefer this over generic web searches when you want a curated, consistently formatted guide document returned as structured JSON rather than scraped HTML.
Side effects
- Invalid or missing 'type' field (must be 'http') — returns validation error
- Invalid 'method' enum value — returns 422 or bad request
- Payment not completed via x402 — returns 402 Payment Required before content is delivered
- Service unavailable — returns 5xx if the knowledge base backend is down
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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