Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@regex-generator Test regex '\d{3}-\d{4}' against 'Call 555-1234' and 'No match here'."
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
Test regex patterns against strings. Get all matches, capture groups, positions, and plain-English pattern explanations. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"regex-generator": {
"url": "https://regex-generator.api.klymax402.com/mcp"
}
}
}Related MCP server: x402-sub-agent-mcp
curl -X POST "https://regex-generator.api.klymax402.com/api/test" \
-H "Content-Type: application/json" \
-d '{"pattern":"...","testStrings":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response bodyAny x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tool | Method | Path | Price | Description |
| POST |
| $0.003 | Test a regex pattern against input strings |
text_test_regexUse this when you need to test a regular expression against one or more strings. Returns all matches, capture groups, positions, and a human-readable explanation of the pattern.
Parameters
Name | Type | Required | Description |
| string | yes | Regular expression pattern (without delimiters) |
| string | no | Regex flags: g, i, m, s, u (default: g) |
| array | yes | Array of strings to test against the pattern |
Example response:
{"pattern":"\d{3}-\d{4}","flags":"g","explanation":"Matches 3 digits, a hyphen, then 4 digits","results":[{"input":"Call 555-1234","matched":true,"matches":[{"value":"555-1234","index":5,"groups":[]}]}],"totalMatches":1}When to use: validating regex patterns before deploying them in code, debugging why a pattern fails to match, or extracting structured data from text. Use this BEFORE writing complex regex into production code.
Not for: text classification (use text_classify_content), PII detection (use privacy_detect_pii), text comparison (use text_compare_diff).
"Test a regular expression against one or more strings"
Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
Network: Base L2 (eip155:8453)
Asset: USDC
Facilitator: Coinbase CDP (primary), PayAI (fallback)
Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
Catalog: https://klymax402.com/llms.txt
Full API reference: https://klymax402.com/llms-full.txt
Live stats: https://klymax402.com/stats
MIT
This server cannot be deployed
Valida regex, cron y SQL contra ejecucion real. Pago por llamada via x402/USDC.
Explain a regex in plain English and detect catastrophic backtracking risk.
A paid remote MCP for hosted MCP server, built to return verdicts, receipts, usage logs, and audit-r
A paid remote MCP for CodeG, built to return verdicts, receipts, usage logs, and audit-ready JSON.