# Services from api.aiskills402.com on Zero

> api.aiskills402.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/api.aiskills402.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/api.aiskills402.com/health.json

## Services

- [aiskills402 x402 Seller Diagnostics](https://www.zero.xyz/c/aiskills402-x402-seller-diagnostics-f811a3be/llms.txt): $0.1/call via x402. Diagnoses why an x402 v2 HTTP API endpoint cannot be paid by buyer agents or does not appear in the Coinbase CDP Bazaar catalog, identifying the exact misconfigured or missing field and how to verify the fix.
- [aiskills402 x402 Buyer Payment Decision Skill](https://www.zero.xyz/c/aiskills402-x402-buyer-payment-decision-skill-4be510c6/llms.txt): $0.03/call via x402. Downloads a SKILL.md decision-rule file that tells an AI agent holding a wallet when to SIGN, REFUSE, or escalate to a human before making an x402 HTTP payment, and how to verify delivery and avoid double-paying.
- [aiskills402 SEO Meta Writer](https://www.zero.xyz/c/aiskills402-seo-meta-writer-8901909a/llms.txt): $0.03/call via x402. Downloads a reusable SKILL.md file containing rules and prompts for writing SEO titles, meta descriptions, and H1 headings for web pages within strict character limits
- [aiskills402 Code Review](https://www.zero.xyz/c/aiskills402-code-review-fe20b98e/llms.txt): $0.05/call via x402. Reviews a code diff or changed file and reports ranked bugs, security holes, data loss risks, missing error handling, edge cases, and resource leaks with location, reason, and concrete fix for each
- [aiskills402 Cold Email Writer](https://www.zero.xyz/c/aiskills402-cold-email-writer-56712be1/llms.txt): $0.03/call via x402. Downloads a reusable AI skill file (SKILL.md) that writes short, honest first-outreach cold emails with a subject line, one specific reason for writing, and one small ask — in the recipient's language.
- [aiskills402 Faithful Summary Skill File](https://www.zero.xyz/c/aiskills402-faithful-summary-skill-file-cca3edae/llms.txt): $0.03/call via x402. Returns a downloadable SKILL.md file containing a faithful text summarization skill that preserves all numbers, names, dates, and qualifiers from the source text
- [aiskills402 Humanize Text Skill File](https://www.zero.xyz/c/aiskills402-humanize-text-skill-file-d3e6d4a7/llms.txt): $0.05/call via x402. Downloads a SKILL.md file containing agent-ready instructions for rewriting AI-generated text to sound naturally human-written in any language
- [aiskills402 Proofread Skill](https://www.zero.xyz/c/aiskills402-proofread-skill-264945be/llms.txt): $0.03/call via x402. Downloads a SKILL.md file that enables an AI agent to proofread text by fixing spelling, grammar, punctuation, and typos with minimal intervention, returning corrected text plus a change summary.

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

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