{
  "markdown": "# Regex Tester API\n\n[![MCP Server](https://img.shields.io/badge/MCP-server-blue)](https://regex-generator.api.klymax402.com/mcp)\n[![x402](https://img.shields.io/badge/payments-x402-6E56CF)](https://x402.org)\n[![License: MIT](https://img.shields.io/badge/license-MIT-green)](LICENSE)\n\nTest regex patterns against strings. Get all matches, capture groups, positions, and plain-English pattern explanations. Pay-per-call via [x402](https://x402.org) (USDC on Base L2) -- no API key, no signup, no rate-limit wall.\n\nPart of the [klymax402](https://klymax402.com) marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.\n\n## Quickstart -- MCP\n\nAdd to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):\n\n```json\n{\n  \"mcpServers\": {\n    \"regex-generator\": {\n      \"url\": \"https://regex-generator.api.klymax402.com/mcp\"\n    }\n  }\n}\n```\n\n## Quickstart -- HTTP (x402)\n\n```bash\ncurl -X POST \"https://regex-generator.api.klymax402.com/api/test\" \\\n  -H \"Content-Type: application/json\" \\\n  -d '{\"pattern\":\"...\",\"testStrings\":\"...\"}'\n# -> 402 Payment Required, with an x402 payment challenge in the response body\n```\n\nAny x402-aware client ([`@x402/fetch`](https://www.npmjs.com/package/@x402/fetch), [`x402-agent-tools`](https://www.npmjs.com/package/x402-agent-tools), ATXP) handles the 402 -> sign -> retry cycle automatically.\n\n## Tools\n\n| Tool | Method | Path | Price | Description |\n|---|---|---|---|---|\n| `text_test_regex` | POST | `/api/test` | $0.003 | Test a regex pattern against input strings |\n\n### `text_test_regex`\n\nUse 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.\n\n**Parameters**\n\n| Name | Type | Required | Description |\n|---|---|---|---|\n| `pattern` | string | yes | Regular expression pattern (without delimiters) |\n| `flags` | string | no | Regex flags: g, i, m, s, u (default: g) |\n| `testStrings` | array | yes | Array of strings to test against the pattern |\n\nExample response:\n\n```json\n{\"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}\n```\n\n**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.\n\n**Not for**: text classification (use `text_classify_content`), PII detection (use `privacy_detect_pii`), text comparison (use `text_compare_diff`).\n\n## Example agent prompts\n\n- \"Test a regular expression against one or more strings\"\n\n## Payment\n\n- Protocol: [x402](https://x402.org) -- HTTP-native pay-per-call, no signup, no API key\n- Network: Base L2 (`eip155:8453`)\n- Asset: USDC\n- Facilitator: Coinbase CDP (primary), PayAI (fallback)\n- Also reachable via [ATXP](https://atxp.ai) (OAuth-wrapped x402, RFC 9728 protected-resource metadata)\n\n## Part of klymax402\n\n100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.\n\n- Catalog: https://klymax402.com/llms.txt\n- Full API reference: https://klymax402.com/llms-full.txt\n- Live stats: https://klymax402.com/stats\n\n## License\n\nMIT\n",
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  "repo_slug": "br0ski777/regex-generator-x402",
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  "api": "https://agentalog.com/api/listings/mcp_io_github_br0ski777_regex_generator_74fb4ff2/readme"
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