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regex test

Test a regular expression against sample text: does it match, what did it capture, at which positions. Use before wiring a pattern into code, instead of guessing whether the escaping is right. One URL. No install, no API key, free quota included.
Call it
curl "https://ainetcafe.com/t/regex_test?...params"
Response contains a hosted file URL. Free anonymous quota; beyond it $0.001/call (pay per call, or pair for a bigger free tier). Also callable via MCP and the Python SDK.

Same family

json_yaml — Convert between JSON and YAML in either direction
validate_json — Check whether text is valid JSON, and optionally whether it matches a JSON Schema (required keys and types)
diff_text — Line-by-line difference between two texts: which lines were added, removed, or changed, with line numbers
jwt_decode — Decode a JWT to see its header and payload, including human-readable expiry (and whether it is already expired)

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