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aiskills402 Cold Email Writer
x402
aiskills402 Cold Email Writer is a paid API for AI agents from api.aiskills402.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-03).
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.
Price / call$0.03
Success—
StatusUnknown
How this service works
Cold Email: Writes a short, honest first outreach message to a stranger in business, in the recipient's language, with a subject line, one specific reason for writing and one small ask. Use when asked to write a cold email, a first outreach message, a sales or partnership introduction, or a prospecting note, in any language. One-time purchase of the SKILL.md file (Agent Skills format), $0.03 USDC, yours forever incl. free re-downloads and new versions. Tested with a strong and a weak model; the…
Output
A SKILL.md file in the Agent Skills format containing a complete cold email writing skill: instructions for composing a short, honest first-outreach message with a subject line, one specific reason for writing, and one small call-to-action ask, usable across any language. The file is yours permanently including free re-downloads and updated versions.
Example use cases
B2B sales prospecting email
“Draft a cold email to the CEO of a mid-sized logistics company introducing my supply chain analytics software and asking if they'd be open to a quick demo — keep it concise and genuine.”
Cross-language partnership outreach
“Write a first-contact outreach email in French to a potential distribution partner in Paris — I want to introduce my e-commerce brand and ask if they'd be willing to hop on a brief call.”
Freelancer prospecting note
“Help me write a short cold email in Spanish to a marketing agency I'd love to work with as a freelance designer — I need a clear reason why I'm reaching out and a low-pressure ask.”
Technical details
Endpoint
GEThttps://api.aiskills402.com/v1/skills/cold-email/file?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a reusable, tested cold email writing skill file rather than a one-off generated email. It is particularly suited for AI agents that repeatedly need to draft honest, concise first-outreach messages across multiple languages and business contexts. The one-time $0.03 USDC purchase makes it cost-effective for repeated use. Prefer this over generic LLM prompting when you want a vetted, structured skill optimized specifically for cold outreach.
Side effects
- Payment not completed — HTTP 402 returned if x402 payment is not provided or fails
- Invalid HTTP method — only GET/HEAD are accepted
- Network/server errors returning 5xx if the skill file is temporarily unavailable
- Expired or invalid payment token leading to authorization failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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