{"uid":"cap_RMbay-4rJziCeFK6VbkIK","slug":"soundex-codes-for-agents-dd862570","name":"Soundex Codes for Agents","description":"American Soundex codes. Use for fuzzy name matching, de-dupe heuristics, or genealogy-style search keys. Returns the Soundex code for a surname-like string. $0.001 USDC per successful call via x402 on Base—deterministic first-party JSON, no API key, no subscription, and nothing is billed on structured validation errors.","url":"https://api.delx.ai/api/v1/x402/soundex","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","maxLength":100000,"description":"Primary text input (max 100k chars). Processed first-party; not retained as a dataset."}}},"responseSchema":{"type":"json","example":{"code":"H425","input":"HELLOAGENTWORLD","schema":"delx/soundex/v1"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_TEO8npUpDOxgwJcAXWGQm","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Computes the American Soundex phonetic code for a surname-like string, enabling fuzzy name matching, deduplication, and genealogy-style search keys.","exampleAgentPrompt":"What's the Soundex code for the surname 'Johanssen'? I want to use it to fuzzy-match similar-sounding names in my database.","exampleUseCases":[{"title":"Genealogy surname search key","prompt":"Generate the Soundex code for 'Schwartz' so I can search a genealogy database for all phonetically similar spellings like Schwarz, Svartz, or Shwartz."},{"title":"Customer record deduplication","prompt":"I have two customer records — one with last name 'Thompson' and one with 'Thomson' — can you get the Soundex codes for both so I can check if they're likely duplicates?"},{"title":"Name normalization for search index","prompt":"I'm building a search index and need the Soundex phonetic key for the surname 'Wojciechowski' to group it with similar-sounding entries."}],"resultDescription":"Returns a deterministic American Soundex code (e.g. 'S532') for the input name string — a single letter followed by three digits representing the phonetic signature of the input.","failureModes":["Input string is empty or missing — returns a structured validation error (not billed)","Input exceeds 100,000 character limit — returns validation error","Non-alphabetic or purely numeric input may yield unexpected or degenerate Soundex codes","Network or payment failure via x402 protocol may prevent call completion"],"whenToPreferThis":"Choose this endpoint when you need a deterministic, first-party phonetic key for a name string with no API key or subscription required. Ideal for lightweight deduplication heuristics, genealogy-style fuzzy search, or any scenario where you need to group name variants by sound. Prefer it over full text-search similarity services when you specifically want the classic American Soundex algorithm and per-call micropayment billing with no overhead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T19:02:35.297Z","isFirstParty":false}