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AISkills402 — Regex From Examples Skill File
x402
AISkills402 — Regex From Examples Skill File is a paid API for AI agents from api.aiskills402.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Purchases and downloads the 'Regex From Examples' SKILL.md file for AI agents, enabling the agent to generate regular expressions from input/output examples for any script type.
Price / call$0.01
Success—
StatusUnknown
How this service works
Regex From Examples for Any Script — Writes a JavaScript regular expression from a description plus lists of strings that must match and must not match, answered as JSON with the pattern and flags. Knows the traps measured in Node 24 - \b and \w are ASCII-only even with the u flag, so \bдума\b never matches Cyrillic text and \w+ cuts "café" to "caf"; a word boundary for any script is a pair of lookarounds with \p{L} and the u flag. Anchors a validator so extra text around the value is rejected,…
Output
Returns a JSON object containing: the full text content of the SKILL.md file (encoded as UTF-8), the skill name ('Regex From Examples for Any Script'), the skill identifier, a SHA256 hash of the file for integrity verification, a payment receipt with the on-chain settlement transaction hash, the version number (e.g. 1.0.0), and a redownload URL and token for future free re-downloads or version updates.
Example use cases
Equip agent with regex skill
“Purchase the regex-from-examples SKILL.md from AISkills402 for me — pay the one-time cent fee in USDC on Base and save the file so I can reuse it whenever I need to generate regex patterns from examples.”
Agent autonomously builds regex patterns
“I want my coding agent to be able to create regular expressions automatically from input/output examples — go buy the regex-from-examples skill from AISkills402 and load it into memory.”
One-time skill acquisition for regex tasks
“Get me the tested SKILL.md for regex generation from AISkills402, pay the $0.01 USDC, and keep the redownload token so we can fetch new versions later without paying again.”
Technical details
Endpoint
GEThttps://api.aiskills402.com/v1/skills/regex-from-examples/file?utm_source=zero.xyzWhen to prefer
Choose this endpoint when your AI agent needs to acquire the capability to generate regular expressions from examples and you want a tested, versioned SKILL.md file delivered via a one-time $0.01 USDC micropayment on Base using x402. Prefer this over manually writing regex logic or using a generic code-generation API when you want a reusable, structured skill file your agent can reference repeatedly without recurring costs.
Side effects
- Payment not completed or rejected — returns 402 Payment Required if x402 USDC payment on Base has not been settled
- Invalid or missing payment header — agent fails to attach correct x402 payment proof
- Network error contacting Base blockchain for settlement verification
- Skill file temporarily unavailable — server-side error (500)
- Redownload token not saved — agent loses ability to re-fetch without paying again
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"file": {
"name": "SKILL.md",
"content": "<the SKILL.md file>",
"encoding": "utf-8"
},
"name": "Regex From Examples for Any Script",
"skill": "regex-from-examples",
"sha256": "<sha256 of SKILL.md>",
"receipt": {
"tx": "0x<settlement transaction>",
"settled": true
},
"version": "1.0.0",
"redownload": {
"url": "<api>/v1/purchases/<token>",
"token": "<64 hex chars>"
}
}
}Tags
x402
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