# Services from vm5-openapi-x402.onrender.com on Zero

> vm5-openapi-x402.onrender.com serves 8 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/vm5-openapi-x402.onrender.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/vm5-openapi-x402.onrender.com/health.json

## Services

- [VM5 OpenAPI Lint — Base USDC Receipt Verifier](https://www.zero.xyz/c/vm5-openapi-lint-base-usdc-receipt-verifier-d430f238/llms.txt): $0.005/call via x402. Verifies a Base chain USDC payment transaction hash, confirming the amount and recipient for x402 micropayment settlement
- [VM5 Email DNS Preflight Check](https://www.zero.xyz/c/vm5-email-dns-preflight-check-4eadc1dd/llms.txt): $0.005/call via x402. Checks DNS health for an email domain, verifying MX records, SPF, and DMARC presence via a micropayment-gated API.
- [VM5 CSV Structure Quality Preflight Report](https://www.zero.xyz/c/vm5-csv-structure-quality-preflight-report-071092e6/llms.txt): $0.005/call via x402. Audits a CSV file's structure for quality issues including duplicate rows, irregular rows, header column count, and spreadsheet formula risks, returning a preflight report without exposing raw data.
- [VM5 OpenAPI Lint — x402 Micropayment Template](https://www.zero.xyz/c/vm5-openapi-lint-x402-micropayment-template-f15695d4/llms.txt): $0.01/call via x402. Returns a verified OpenAPI YAML starter template and Redocly lint rule disclosure for building x402-compatible APIs, with micropayment via the x402 protocol.
- [VM5 Low-Poly GLB 3D Object Generator](https://www.zero.xyz/c/vm5-low-poly-glb-3d-object-generator-23a3b00a/llms.txt): $0.05/call via x402. Generates a procedural low-poly 3D GLB 2.0 model (e.g. lantern) on Base chain via x402 USDC micropayment
- [VM5 HTTPS Certificate Preflight Check](https://www.zero.xyz/c/vm5-https-certificate-preflight-check-394d23ff/llms.txt): $0.005/call via x402. Verifies a domain's public HTTPS certificate validity, hostname match, and trust status without making HTTP requests to the target
- [VM5 x402 Preflight QA — OpenAPI Quote Review](https://www.zero.xyz/c/vm5-x402-preflight-qa-openapi-quote-review-2aae84b9/llms.txt): $0.01/call via x402. Performs an offline quality-assurance review of a public x402 payment quote, verifying its structural consistency across 8 checks and returning a pass/fail outcome with USDC charge details.
- [VM5 OpenAPI Lint x402 Ping](https://www.zero.xyz/c/vm5-openapi-lint-x402-ping-4cff334d/llms.txt): $0.001/call via x402. Health/connectivity ping endpoint for the VM5 OpenAPI linting and quality-check service, gated by x402 micropayment in USDC on Base

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)