# Services from marketer-apis.venture-labs.workers.dev on Zero

> marketer-apis.venture-labs.workers.dev serves 3 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/marketer-apis.venture-labs.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/marketer-apis.venture-labs.workers.dev/health.json

## Services

- [UTM Lint – UTM URL Validator](https://www.zero.xyz/c/utm-lint-utm-url-validator-84bf0207/llms.txt): $0.03/call via x402. Validates and normalizes a URL's UTM parameters, returning detected issues, naming convention, and a normalized version of the URL.
- [Launch Checklist API](https://www.zero.xyz/c/launch-checklist-api-1ba936d0/llms.txt): $0.1/call via x402. Returns a deterministic launch checklist for a given marketing motion, helping marketers ensure all pre-launch steps are covered.
- [Messaging Lint – Marketing Copy Audit API](https://www.zero.xyz/c/messaging-lint-marketing-copy-audit-api-d4c66816/llms.txt): $0.05/call via x402. Audits marketing copy text for quality issues, clarity, and effectiveness using deterministic rules, returning actionable lint-style feedback.

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)