# Services from one-search.one-engine.workers.dev on Zero

> one-search.one-engine.workers.dev serves 650 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/one-search.one-engine.workers.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/one-search.one-engine.workers.dev/health.json

## Services

- [ONE Engine Email Verify Basic](https://www.zero.xyz/c/one-engine-email-verify-basic-fdbf5df4/llms.txt): $0.0024/call via x402. Validates an email address for syntax correctness, MX record existence, disposable domain detection, and role-based address identification
- [ONE Engine Web Extract](https://www.zero.xyz/c/one-engine-web-extract-47234ed2/llms.txt): $0.0029/call via x402. Fetches and extracts clean readable text, links, and metadata from a public web page URL
- [ONE Engine Batch Hash API](https://www.zero.xyz/c/one-engine-batch-hash-api-a8ef3035/llms.txt): $0.0011/call via x402. Computes SHA-256 or SHA-512 cryptographic hashes for up to 100 UTF-8 strings in a single pay-per-call request.
- [ONE Engine SHA-256 Hash](https://www.zero.xyz/c/one-engine-sha-256-hash-b614080d/llms.txt): $0.0009/call via x402. Computes a SHA-256 cryptographic hash of any UTF-8 text string and returns the hex digest.
- [ONE Engine SHA-512 Hash](https://www.zero.xyz/c/one-engine-sha-512-hash-41897211/llms.txt): $0.001/call via x402. Computes a SHA-512 cryptographic hash of any UTF-8 text string, returning the hex digest.
- [ONE Engine JSON Validator](https://www.zero.xyz/c/one-engine-json-validator-c662e393/llms.txt): $0.0011/call via x402. Validates a JSON text string and returns its parsed type plus normalized JSON output when valid
- [ONE Engine UUID v4 Generator](https://www.zero.xyz/c/one-engine-uuid-v4-generator-6dfc4282/llms.txt): $0.0009/call via x402. Generates one or more cryptographically random UUID v4 identifiers in a single pay-per-call API request
- [ONE Engine URL Normalize](https://www.zero.xyz/c/one-engine-url-normalize-180279ea/llms.txt): $0.0012/call via x402. Parses and normalizes an HTTP/HTTPS URL into structured components like scheme, host, path, query, and fragment
- [ONE Engine Basic Web Search](https://www.zero.xyz/c/one-engine-basic-web-search-2b09e631/llms.txt): $0.008/call via x402. Performs a low-cost web search query and returns ranked results with titles, links, and snippets for autonomous agents.
- [ONE Engine ASCII Fold Text Normalizer](https://www.zero.xyz/c/one-engine-ascii-fold-text-normalizer-5a0f6875/llms.txt): $0.0015/call via x402. Converts text to ASCII by folding/removing non-ASCII characters (accents, diacritics, special symbols) up to 50,000 characters.
- [ONE Engine ASCII Fold Text Normalizer](https://www.zero.xyz/c/one-engine-ascii-fold-text-normalizer-f411b67c/llms.txt): $0.03/call via x402. Converts text up to 50,000 characters to ASCII by folding/transliterating Unicode characters to their closest ASCII equivalents.
- [ONE Engine Web Search](https://www.zero.xyz/c/one-engine-web-search-6a4ec4e0/llms.txt): $0.008/call via x402. Performs a ranked web search query and returns up to 10 results including URL, title, snippet, and position for a pay-per-call fee of $0.008 USDC via x402 on Base.
- [ONE Engine ASCII Fold Text Normalizer](https://www.zero.xyz/c/one-engine-ascii-fold-text-normalizer-0420d914/llms.txt): $0.0007/call via x402. Converts Unicode text to its ASCII-folded equivalent by stripping or replacing non-ASCII characters with their closest ASCII representations.
- [ONE Engine ASCII Fold Text Normalizer](https://www.zero.xyz/c/one-engine-ascii-fold-text-normalizer-980626e3/llms.txt): $0.004/call via x402. Converts text containing non-ASCII characters into ASCII-only equivalents via Unicode folding (e.g. accents, diacritics, and special characters are stripped or transliterated).
- [ONE Engine JWT Decode](https://www.zero.xyz/c/one-engine-jwt-decode-9c2d5bb5/llms.txt): $0.0012/call via x402. Decodes a JWT token string and returns its parsed header, payload, and verification status
- [ONE Engine Timestamp to ISO Converter](https://www.zero.xyz/c/one-engine-timestamp-to-iso-converter-180c4353/llms.txt): $0.001/call via x402. Converts a Unix timestamp (in seconds or milliseconds) to an ISO 8601 formatted datetime string.
- [ONE Engine Numeric Histogram (T1)](https://www.zero.xyz/c/one-engine-numeric-histogram-t1-3d1b7bf4/llms.txt): $0.0005/call via x402. Computes a histogram of a numeric array, with configurable bin count, range, scaling, and digit precision.
- [ONE Engine ISO Timestamp Converter](https://www.zero.xyz/c/one-engine-iso-timestamp-converter-0f10796f/llms.txt): $0.001/call via x402. Converts an ISO 8601 date-time string into Unix timestamps in both seconds and milliseconds
- [ONE Engine Unicode NFKC Text Normalizer](https://www.zero.xyz/c/one-engine-unicode-nfkc-text-normalizer-fab9a9f7/llms.txt): $0.0007/call via x402. Normalizes input text using Unicode NFKC (Compatibility Decomposition followed by Canonical Composition) normalization form.
- [ONE Engine ISO Date Extractor](https://www.zero.xyz/c/one-engine-iso-date-extractor-589a8bcf/llms.txt): $0.004/call via x402. Extracts ISO-formatted dates from unstructured text up to 50,000 characters
- [ONE Engine Blob Decoder](https://www.zero.xyz/c/one-engine-blob-decoder-1069adc0/llms.txt): $0.0069/call via x402. Identifies and decodes opaque or encoded text blobs (e.g. base64) into their plaintext representation with step-by-step decoding metadata.
- [ONE Engine Text-to-Slug Normalizer](https://www.zero.xyz/c/one-engine-text-to-slug-normalizer-99198500/llms.txt): $0.0005/call via x402. Converts arbitrary text into a URL-safe slug string by normalizing characters, spacing, and formatting.
- [ONE Engine Numeric Normalize Range (t2)](https://www.zero.xyz/c/one-engine-numeric-normalize-range-t2-bdc050b2/llms.txt): $0.0007/call via x402. Normalizes an array of numbers to a target range, with optional scaling, offset, rounding, and size capping
- [ONE Engine Unicode NFKC Normalization](https://www.zero.xyz/c/one-engine-unicode-nfkc-normalization-dfa2db9c/llms.txt): $0.001/call via x402. Applies Unicode NFKC normalization to input text, converting compatibility characters to their canonical decomposed and recomposed forms.
- [ONE Engine Text Clean & Normalize Whitespace](https://www.zero.xyz/c/one-engine-text-clean-normalize-whitespace-9fb39d4e/llms.txt): $0.0011/call via x402. Cleans and normalizes whitespace in text strings using either compact or preserve-lines mode for downstream agent processing
- [ONE Engine Base64 Encode](https://www.zero.xyz/c/one-engine-base64-encode-d8f672ec/llms.txt): $0.0009/call via x402. Encodes UTF-8 text as standard Base64 or URL-safe Base64URL (unpadded) via a pay-per-call API
- [ONE Engine Array Difference](https://www.zero.xyz/c/one-engine-array-difference-777bd7ed/llms.txt): $0.0011/call via x402. Computes the set difference between two arrays, returning elements in array A that are not present in array B.
- [ONE Engine Numeric Histogram (Top-10)](https://www.zero.xyz/c/one-engine-numeric-histogram-top-10-8753777a/llms.txt): $0.03/call via x402. Computes a histogram over an array of up to 1000 numeric values, returning the top-10 most frequent bins with optional min/max range, bin count, rounding, scaling, and offset controls.
- [ONE Engine Z-Score (t5) Calculator](https://www.zero.xyz/c/one-engine-z-score-t5-calculator-fd22d964/llms.txt): $0.0025/call via x402. Computes z-scores for an array of numeric values using the t5 method, returning standardized scores indicating how many standard deviations each value is from the mean.
- [ONE Engine Array Average](https://www.zero.xyz/c/one-engine-array-average-4ad18eeb/llms.txt): $0.001/call via x402. Computes the arithmetic mean of a provided array of numbers, returning the count and average value.
- [ONE Engine Array Intersection](https://www.zero.xyz/c/one-engine-array-intersection-a4fbc360/llms.txt): $0.0065/call via x402. Computes the intersection of two arrays, returning elements common to both input arrays.
- [ONE Engine Hashtag Extractor](https://www.zero.xyz/c/one-engine-hashtag-extractor-5f22e5e2/llms.txt): $0.0015/call via x402. Extracts all hashtags from a given text string, returning them as a structured list
- [ONE Engine URL Component Parser](https://www.zero.xyz/c/one-engine-url-component-parser-9a98cdd5/llms.txt): $0.0011/call via x402. Parses a URL string into its constituent components: protocol, hostname, pathname, search query, and hash fragment.
- [ONE Engine Moving Average (T7)](https://www.zero.xyz/c/one-engine-moving-average-t7-84871e3b/llms.txt): $0.0065/call via x402. Computes a moving average over an array of numeric values with optional normalization, scaling, and offset parameters.
- [ONE Engine Text Normalize Uppercase](https://www.zero.xyz/c/one-engine-text-normalize-uppercase-d89ac612/llms.txt): $0.0065/call via x402. Converts input text to uppercase using a pay-per-call utility API on Base via x402 micropayments.
- [ONE Engine Text-to-Integers Extractor](https://www.zero.xyz/c/one-engine-text-to-integers-extractor-9b86ee69/llms.txt): $0.0007/call via x402. Extracts all integer numbers from a block of text and returns them as a structured list
- [ONE Engine Array Intersection (t2)](https://www.zero.xyz/c/one-engine-array-intersection-t2-e0ffe8ec/llms.txt): $0.0007/call via x402. Computes the intersection of two arrays, returning elements present in both input arrays.
- [ONE Engine Array Intersection](https://www.zero.xyz/c/one-engine-array-intersection-47781b97/llms.txt): $0.01/call via x402. Computes the intersection of two arrays, returning elements common to both input arrays.
- [ONE Engine Email Syntax Validator](https://www.zero.xyz/c/one-engine-email-syntax-validator-508d8bc0/llms.txt): $0.0009/call via x402. Validates whether an email address string is syntactically well-formed
- [ONE Engine Email Extractor (v3/t7)](https://www.zero.xyz/c/one-engine-email-extractor-v3-t7-d7d236d7/llms.txt): $0.0065/call via x402. Extracts email addresses from a block of text up to 50,000 characters.
- [ONE Engine Percent Change Calculator](https://www.zero.xyz/c/one-engine-percent-change-calculator-9a6c442f/llms.txt): $0.0011/call via x402. Computes the percentage change between two numbers, returning the result as a numeric value.
- [ONE Engine Unicode NFKC Normalization](https://www.zero.xyz/c/one-engine-unicode-nfkc-normalization-5b2eb21c/llms.txt): $0.0015/call via x402. Normalizes text to Unicode NFKC form, decomposing and recomposing characters for canonical compatibility equivalence.
- [ONE Engine Sort Keys](https://www.zero.xyz/c/one-engine-sort-keys-e459878a/llms.txt): $0.0011/call via x402. Recursively sorts all keys in a JSON object alphabetically and returns the canonically ordered result.
- [ONE Engine Array Intersection](https://www.zero.xyz/c/one-engine-array-intersection-20fbd755/llms.txt): $0.0011/call via x402. Computes the intersection of two arrays, returning shared elements and their count.
- [ONE Engine Text Whitespace Normalizer](https://www.zero.xyz/c/one-engine-text-whitespace-normalizer-ce57fcb0/llms.txt): $0.0005/call via x402. Normalizes whitespace in a text string, collapsing irregular spacing, tabs, and newlines into consistent whitespace.
- [ONE Engine Text Slugify](https://www.zero.xyz/c/one-engine-text-slugify-01215abd/llms.txt): $0.001/call via x402. Converts arbitrary text into a URL-safe slug string (e.g. 'Hello ONE Engine' → 'hello-one-engine')
- [ONE Engine Text Normalize Slug](https://www.zero.xyz/c/one-engine-text-normalize-slug-3f3a5988/llms.txt): $0.01/call via x402. Converts arbitrary text into a URL-safe slug format by normalizing characters, spacing, and punctuation.
- [ONE Engine Array Intersection](https://www.zero.xyz/c/one-engine-array-intersection-2cc7b7f5/llms.txt): $0.001/call via x402. Computes the intersection of two arrays, returning elements common to both input sets.
- [ONE Engine Hashtag Extractor](https://www.zero.xyz/c/one-engine-hashtag-extractor-545af5a3/llms.txt): $0.0007/call via x402. Extracts all hashtags from a given block of text, up to 50,000 characters.
- [ONE Engine Text Truncate](https://www.zero.xyz/c/one-engine-text-truncate-ebff9601/llms.txt): $0.001/call via x402. Truncates a text string to a specified maximum character length, returning the shortened text and a flag indicating if truncation occurred.
- [ONE Engine Cumulative Sum API](https://www.zero.xyz/c/one-engine-cumulative-sum-api-c77c2e4b/llms.txt): $0.0015/call via x402. Computes the cumulative (running) sum of an array of up to 1000 numeric values, with optional scaling and filtering parameters.
- [ONE Engine Array Unique Filter](https://www.zero.xyz/c/one-engine-array-unique-filter-1141d8f8/llms.txt): $0.01/call via x402. Returns only the unique elements from a JSON array, optionally comparing against a second array or paginating results.
- [ONE Engine JSON Key Omitter](https://www.zero.xyz/c/one-engine-json-key-omitter-d2d49d54/llms.txt): $0.0011/call via x402. Removes specified keys from a JSON object and returns the filtered result
- [ONE Engine T3 Moving Average](https://www.zero.xyz/c/one-engine-t3-moving-average-326b2362/llms.txt): $0.001/call via x402. Computes the Triple Exponential Moving Average (T3) of a numeric series with configurable smoothing parameters.
- [ONE Engine Text Extract Top-10 URLs](https://www.zero.xyz/c/one-engine-text-extract-top-10-urls-2d2f34d8/llms.txt): $0.03/call via x402. Extracts the top 10 URLs referenced or linked within a block of text, up to 50,000 characters.
- [ONE Engine Hashtag Extractor](https://www.zero.xyz/c/one-engine-hashtag-extractor-291988f0/llms.txt): $0.01/call via x402. Extracts hashtags from a given text string of up to 50,000 characters.
- [ONE Engine Text Extract Numbers](https://www.zero.xyz/c/one-engine-text-extract-numbers-26adac51/llms.txt): $0.0005/call via x402. Extracts all numeric values from a block of text up to 50,000 characters
- [ONE Engine Email Extractor](https://www.zero.xyz/c/one-engine-email-extractor-83660b7b/llms.txt): $0.0005/call via x402. Extracts email addresses from a block of text up to 50,000 characters
- [ONE Engine Z-Score Calculator](https://www.zero.xyz/c/one-engine-z-score-calculator-f7f6417e/llms.txt): $0.018/call via x402. Computes z-scores (standard scores) for an array of numeric values, with optional scaling and offsetting controls.
- [ONE Engine ISO Date Extractor](https://www.zero.xyz/c/one-engine-iso-date-extractor-4aaede52/llms.txt): $0.0005/call via x402. Extracts and identifies ISO 8601 formatted dates from a block of text
- [ONE Engine Numeric Histogram](https://www.zero.xyz/c/one-engine-numeric-histogram-9bca52d6/llms.txt): $0.0065/call via x402. Computes a frequency histogram over an array of numeric values with configurable bin count, range, scaling, and rounding.
- [Array Intersection (T9)](https://www.zero.xyz/c/array-intersection-t9-3c3d404f/llms.txt): $0.018/call via x402. Computes the intersection of two arrays, returning elements common to both input arrays.
- [ONE Engine Email Extractor (Text)](https://www.zero.xyz/c/one-engine-email-extractor-text-f5e11c75/llms.txt): $0.018/call via x402. Extracts email addresses from an arbitrary block of text up to 50,000 characters.
- [ONE Engine Array Intersection (T4)](https://www.zero.xyz/c/one-engine-array-intersection-t4-8aa03d45/llms.txt): $0.0015/call via x402. Computes the intersection of two arrays, returning elements present in both, with optional offset and size pagination controls.
- [ONE Engine Email Extractor (T5)](https://www.zero.xyz/c/one-engine-email-extractor-t5-e755b809/llms.txt): $0.0025/

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