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Levenshtein Edit Distance & Similarity API
x402
Levenshtein Edit Distance & Similarity API is a paid API for AI agents from x402-zoo.lolagent.workers.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Calculates the Levenshtein edit distance and normalized similarity score between two strings for fuzzy matching and typo detection.
Price / call$0.001
Success—
StatusUnknown
How this service works
Calculate edit distance and normalized similarity between two strings for fuzzy matching and typo comparison.
Output
Returns the integer Levenshtein edit distance (minimum single-character edits needed to transform string a into string b) and a normalized similarity score (float between 0 and 1, where 1 means identical strings) between the two input strings.
Example use cases
Typo detection in user input
“Compare the strings 'accomodation' and 'accommodation' — what's the edit distance and how similar are they? I need to decide if it's a likely typo.”
Fuzzy name matching for deduplication
“I have two customer names: 'Johnathan Smith' and 'Jonathan Smyth' — can you calculate their Levenshtein distance and similarity so I can decide if they're the same person?”
Search query correction scoring
“Tell me the edit distance between the search query 'javascrpit' and 'javascript' so I can determine whether to suggest a spelling correction.”
Technical details
Endpoint
GEThttps://x402-zoo.lolagent.workers.dev/api/levenshteinWhen to prefer
Choose this endpoint when you need a precise, numeric edit-distance or similarity measure between exactly two strings — ideal for typo detection, fuzzy deduplication, spell-check scoring, or any scenario requiring a normalized 0–1 similarity score. Prefer this over semantic embedding similarity when character-level edit cost matters more than semantic meaning.
Side effects
- Missing query parameter 'a' or 'b' returns a 400 bad request error
- Empty strings may return distance of 0 or length of the non-empty string
- Very long strings may increase computation time or hit length limits
- Payment failure or insufficient USDC balance returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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