{"uid":"cap_Hvmyqy8CLmZbo4k7QJgj9","slug":"delx-base58-validate-19c1a212","name":"Delx Base58 Validate","description":"Validate Bitcoin-base58 alphabet membership for local address hygiene — call when checking Bitcoin-base58 alphabet membership locally. Use for chain input hygiene without live RPC—adjacent to OneSource-class small chain reads, but static/local only so rights and margin stay clear. Returns deterministic machine-readable JSON for $0.003 USDC via x402 on Base. Execution is first-party, local-only, stateless, and memory-only with no paid upstream, no input retention, and no claim of live chain tip,…","url":"https://api.delx.ai/api/v1/x402/base58-validate","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"value":{"type":"string","description":"Base58 string to validate against the Bitcoin alphabet (local only)."}}},"responseSchema":{"type":"json","example":{"valid":true,"length":34,"schema":"delx/util-base58-validate/v1","alphabet":"bitcoin-base58","values_returned":false}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Z1ZvnvM6bNQJotignYpku","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Validates whether a string consists entirely of characters from the Bitcoin Base58 alphabet, locally and deterministically, with no live chain access.","exampleAgentPrompt":"Can you check whether the string '1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf' is a valid Bitcoin Base58 string — just alphabet membership, no live chain lookup needed?","exampleUseCases":[{"title":"Address hygiene before payment flow","prompt":"Before I send this transaction, check if '3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy' is made up of valid Bitcoin Base58 characters only — I just need a local format check, not a live chain lookup."},{"title":"Batch input sanitization for user submissions","prompt":"A user just submitted '0OIlBitc0inAddr3ss' as a Bitcoin address — can you validate whether it's valid Bitcoin Base58 alphabet? I want to reject it early if it has illegal characters before passing it to my backend."},{"title":"Debugging address parsing pipeline","prompt":"I'm getting errors in my address parser and I think the input has non-Base58 characters — can you run a local Base58 alphabet check on 'bc1qar0srrr7xfkvy5l643lydnw9re59gtzzwf5mdq' to see if it passes?"}],"resultDescription":"Returns a deterministic machine-readable JSON object indicating whether the submitted string consists exclusively of characters from the Bitcoin Base58 alphabet (no live chain state, no network calls). Includes a boolean membership result and is stateless and memory-free.","failureModes":["Empty or missing 'value' field returns an error or false result","Strings containing Base58Check prefix or checksum bytes may pass alphabet check but semantic validity is not guaranteed","Non-string input types may cause schema validation errors","No network errors possible since the check is purely local"],"whenToPreferThis":"Use this endpoint when you need a fast, cheap, stateless local check that a string only contains Bitcoin Base58 alphabet characters (alphanumeric excluding 0, O, I, and l) — without any live RPC, blockchain node, or network call. Prefer it over full address validation APIs when you only need character-set hygiene as an early filter, or when you want to avoid the latency and cost of on-chain lookups for bulk input sanitization.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:59:50.830Z","isFirstParty":false}