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American Soundex Phonetic Hash API
x402
American Soundex Phonetic Hash API is a paid API for AI agents from agent402.tools, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).
Computes the American Soundex (NARA) phonetic hash code for one or more words, mapping similar-sounding names to the same 4-character code for fuzzy name matching.
Price / call$0.001
Success—
StatusUnknown
How this service works
Compute the American Soundex (NARA) phonetic hash code for one or more words. Soundex maps similar-sounding names to the same 4-character code (letter + 3 digits). Useful for fuzzy name matching. Deterministic, pure CPU.
Output
A Soundex phonetic hash code (one letter followed by three digits, e.g. S530) for each word provided. Deterministic output — same input always produces the same 4-character code, enabling fuzzy matching of similarly-sounding names.
Example use cases
Example prompt
“What's the American Soundex code for the names 'Smith', 'Smyth', and 'Smithe' — I want to check if they all map to the same phonetic hash?”
Technical details
Endpoint
POSThttps://agent402.tools/api/soundexWhen to prefer
Use this endpoint when you need deterministic, standards-compliant American Soundex (NARA) phonetic hashing for name deduplication, genealogical record matching, or fuzzy name search. Prefer this over custom phonetic algorithms when NARA-standard Soundex compatibility is required and you need a simple, fast, pure-CPU computation without ML overhead.
Side effects
- Empty or missing 'text' field returns an error
- Non-alphabetic input (numbers, symbols) may produce unexpected or invalid Soundex codes
- Payment failure via x402 protocol returns 402 status
- Very long input strings may be truncated or rejected
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| text | string | one or more words to hash (space-separated) |
Output
Schema · Response
{
"type": "json",
"example": {
"codes": [
{
"word": "Robert",
"soundex": "R163"
},
{
"word": "Rupert",
"soundex": "R163"
}
],
"match": true
}
}Tags
x402
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