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Double Metaphone Encoder
x402
Double Metaphone Encoder is a paid API for AI agents from similarity.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Encodes a word using the Double Metaphone algorithm, returning both a primary and secondary phonetic code to capture alternate pronunciations, especially for non-English names.
Price / call$0.002
Success—
StatusUnknown
How this service works
Encode a word with Double Metaphone, returning a primary and a secondary code to capture alternate pronunciations (useful for non-English names).
Output
Returns a primary Double Metaphone code and a secondary code (if an alternate pronunciation exists) for the submitted word. The codes are short alphabetic strings representing the phonetic skeleton of the word, suitable for indexing or comparing against other encoded words.
Example use cases
Deduplicating customer name records
“I have a customer database with lots of name duplicates from different spellings — can you get the Double Metaphone codes for 'Kowalczyk' so I can group it with phonetically similar entries?”
Phonetic search index for multilingual names
“I'm building a search index that needs to handle non-English names — please encode 'Nguyen' with Double Metaphone so I get both the primary and secondary pronunciation codes.”
Matching names across immigration records
“I need to match historical records where names were transcribed inconsistently — can you Double Metaphone encode 'Szymanski' to find all its phonetic variants?”
Technical details
Endpoint
POSThttps://similarity.openverbs.com/v1/double-metaphoneWhen to prefer
Choose Double Metaphone over Soundex or basic Metaphone when handling non-English names (especially names of Slavic, Asian, or Middle Eastern origin) where alternate pronunciations need to be captured. The secondary code makes it superior for cross-cultural name matching. Prefer this over Soundex for any serious phonetic deduplication or search task where name diversity is expected.
Side effects
- Empty or missing 'word' field returns a validation error
- Word exceeding 256 characters is rejected
- Non-string input types cause schema validation failure
- Payment failure (x402) blocks the request
- Network timeout on slow connections
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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