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Damerau-Levenshtein distance

Damerau-Levenshtein distance — like Levenshtein but also counts adjacent transpositions as a single edit — plus a normalized similarity in [0,1].

Visit similarity.openverbs.com

Host	similarity.openverbs.com
Price	$0.002–$0.004 per call
Network	Base
Paid endpoints listed	10
Calls, last 30 days*	16
Most unique payers on one endpoint (30 days)*	2
Last paid call*	2026-10-08
Tags	damerau levenshtein distance, transposition edit distance, typo similarity api, adjacent swap distance, fuzzy typo matching, hamming distance, equal length string distance, character mismatch count

* From the public x402 Bazaar index (snapshot 2026-10-18T04:07Z); reported by the facilitator, not measured by us.

Endpoints

URL	Method	Price
`https://similarity.openverbs.com/v1/damerau` Damerau-Levenshtein distance — like Levenshtein but also counts adjacent transpositions as a single edit — plus a…	POST	$0.004
`https://similarity.openverbs.com/v1/hamming` Hamming distance — the number of positions at which two EQUAL-LENGTH strings differ — plus a normalized similarity.…	POST	$0.004
`https://similarity.openverbs.com/v1/levenshtein` Levenshtein edit distance (insertions, deletions, substitutions) between two strings, plus a normalized similarity in…	POST	$0.004
`https://similarity.openverbs.com/v1/jaccard` Jaccard similarity index in [0,1] — the size of the intersection over the union of the two strings' character-bigram…	POST	$0.004
`https://similarity.openverbs.com/v1/compare` Report whether two tokens sound alike under a chosen algorithm (soundex, metaphone or double-metaphone; default…	POST	$0.002
`https://similarity.openverbs.com/v1/dice` Sørensen-Dice similarity coefficient in [0,1] over character bigrams — robust to word order and minor edits.	POST	$0.004
`https://similarity.openverbs.com/v1/soundex` Encode a word with the classic Soundex algorithm (letter + 3 digits) for phonetic matching of names.	POST	$0.002
`https://similarity.openverbs.com/v1/metaphone` Encode a word with the Metaphone algorithm — more accurate than Soundex for English pronunciation.	POST	$0.002
`https://similarity.openverbs.com/v1/double-metaphone` Encode a word with Double Metaphone, returning a primary and a secondary code to capture alternate pronunciations…	POST	$0.002
`https://similarity.openverbs.com/v1/jaro` Jaro similarity and the Jaro-Winkler variant (which boosts scores for a shared prefix), both in [0,1]. The prefix…	POST	$0.004

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