# Services from wouldpayagain.com on Zero

> wouldpayagain.com serves 11 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/wouldpayagain.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/wouldpayagain.com/health.json

## Services

- [Would Pay Again Sponsorship Request](https://www.zero.xyz/c/would-pay-again-sponsorship-request-f5cda900/llms.txt): $25/call via x402. Submits a sponsorship request for the Would Pay Again newsletter, paying $25 USDC on Base via x402 machine payments.
- [Would Pay Again x402 Endpoint Review Feed](https://www.zero.xyz/c/would-pay-again-x402-endpoint-review-feed-c071cea8/llms.txt): $0.01/call via x402. Returns a machine-readable JSON feed of community reviews of x402 paywalled API endpoints, including pricing, quality ratings, latency, and on-chain settlement references.
- [Would Pay Again – Newsletter Issue #1](https://www.zero.xyz/c/would-pay-again-newsletter-issue-1-8d7840b8/llms.txt): $0.05/call via x402. Returns the full content of Would Pay Again newsletter Issue #1 (title, URL, HTML, and Markdown) via a micropayment-gated API using x402/USDC on Base.
- [Would Pay Again – Book Sponsor Card Ad (1 Issue)](https://www.zero.xyz/c/would-pay-again-book-sponsor-card-ad-1-issue-fa5f9d96/llms.txt): $0.5/call via x402. Confirms and pays ($0.5 USDC) for a pre-reserved Sponsor card newsletter ad slot in one issue of the Would Pay Again newsletter, using a reservation code obtained from the free reserve endpoint.
- [Would Pay Again Issue #2](https://www.zero.xyz/c/would-pay-again-issue-2-30a0f4c0/llms.txt): $0.05/call via x402. Returns the full content of Would Pay Again newsletter Issue #2 as structured JSON including title, web URL, HTML, and markdown.
- [Would Pay Again — Issue #3 Full Content](https://www.zero.xyz/c/would-pay-again-issue-3-full-content-560552d7/llms.txt): $0.05/call via x402. Returns the full content of Would Pay Again newsletter Issue #3 as a JSON object with title, web URL, HTML, and markdown fields.
- [Would Pay Again Ad Booking](https://www.zero.xyz/c/would-pay-again-ad-booking-c1ac56b5/llms.txt): $0.2/call via x402. Book an advertisement slot in the Would Pay Again newsletter about the x402 machine-payments economy, paying $0.20 USDC via x402 on Base.
- [Would Pay Again Newsletter Subscription](https://www.zero.xyz/c/would-pay-again-newsletter-subscription-efb97655/llms.txt): $0.001/call via x402. Subscribes a caller to the Would Pay Again newsletter about the x402 machine-payments economy, paid via USDC on Base.
- [Would Pay Again – Bounty Fact Submission](https://www.zero.xyz/c/would-pay-again-bounty-fact-submission-33c6c997/llms.txt): $0.01/call via x402. Submit a verifiable fact about the machine-payments/x402 ecosystem for editorial review, with a $0.01 USDC fee and a $0.10 USDC reward if accepted
- [Would Pay Again – Book Classified Ad (3 Issues)](https://www.zero.xyz/c/would-pay-again-book-classified-ad-3-issues-40a22b16/llms.txt): $0.6/call via x402. Confirms and pays for a pre-reserved 3-issue Classified newsletter ad placement for $0.6 USDC via x402 machine payment.
- [Would Pay Again – Book Classified Ad (1 Issue)](https://www.zero.xyz/c/would-pay-again-book-classified-ad-1-issue-eca7b783/llms.txt): $0.2/call via x402. Confirms and pays for a reserved Classified newsletter ad slot in one issue of Would Pay Again for $0.2 USDC, using a prior reservation code.

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)