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Jaro / Jaro-Winkler String Similarity
x402
Jaro / Jaro-Winkler String Similarity is a paid API for AI agents from text-similarity.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-21).
Computes Jaro and Jaro-Winkler similarity scores between two strings, including match count, transpositions, common prefix length, and a verdict summary.
Price / call$0.02
Success—
StatusUnknown
How this service works
Jaro and Jaro-Winkler similarity of two short strings (names), with matches, transpositions and prefix boost.
Output
Returns a JSON object with the Jaro score, Jaro-Winkler score, number of matching characters, transpositions, common prefix length, a plain-English verdict and summary, the ignoreCase and prefixScale settings used, and optional reasons or disclaimers if the result is degraded or approximate.
Example use cases
Duplicate customer name detection
“I have two customer records — one says 'Katherine Johnson' and the other says 'Kathryn Johnston'. What's the Jaro-Winkler similarity between those two names so I can decide if they're the same person?”
Search result fuzzy matching
“A user searched for 'Mchael Smith' — how similar is that to 'Michael Smith' using Jaro-Winkler? I want the match count and transpositions too.”
Username deduplication check
“Check the Jaro-Winkler score between the usernames 'alexjones' and 'alex_jones', ignoring case, so I can flag potential duplicate accounts.”
Technical details
Endpoint
GEThttps://text-similarity.x402tookit.com/jaro-winkler?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a nuanced similarity score for short strings like names, usernames, or identifiers — especially when a prefix-sensitive measure (Jaro-Winkler) outperforms edit-distance metrics. Ideal for name deduplication, record linkage, and fuzzy identity matching where common prefixes are strong signals. For longer text or n-gram/token-based comparison, prefer the Dice/Jaccard or cosine sibling endpoints.
Side effects
- Missing required query parameters 'a' or 'b' returns an error
- Strings exceeding 2000 characters may be rejected or truncated
- prefixScale outside 0–0.25 range may cause an error or clamping
- Payment failure (x402) returns 402 Payment Required before computation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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