# Services from agent402.co.uk on Zero

> agent402.co.uk serves 106 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/agent402.co.uk
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/agent402.co.uk/health.json

## Services

- [Agent402 UK Money Math](https://www.zero.xyz/c/agent402-uk-money-math-0ef8ef68/llms.txt): $0.001/call via x402. Performs exact decimal money arithmetic (add, subtract, multiply, divide, allocate, round) at ISO 4217 minor-unit precision using string-based amounts to avoid floating-point errors.
- [Agent402 UK String Similarity](https://www.zero.xyz/c/agent402-uk-string-similarity-8a7e20d2/llms.txt): $0.001/call via x402. Computes Levenshtein edit distance and similarity ratio between two input strings (up to 2,000 characters each) for fuzzy matching and deduplication.
- [Agent402 UK Cron Expression Validator & Next Fire Times](https://www.zero.xyz/c/agent402-uk-cron-expression-validator-next-fire-times-9b968428/llms.txt): $0.001/call via x402. Validates a cron expression and returns the next N scheduled fire times in a specified IANA timezone, optionally starting from a given ISO datetime.
- [Agent402 UK IRR Calculator (Newton-Raphson)](https://www.zero.xyz/c/agent402-uk-irr-calculator-newton-raphson-988d849d/llms.txt): $0.002/call via x402. Computes the Internal Rate of Return for a cashflow series using the Newton-Raphson iterative method, returning IRR and convergence status.
- [Agent402 UK IBAN Full Validator](https://www.zero.xyz/c/agent402-uk-iban-full-validator-91c19bab/llms.txt): $0.001/call via x402. Validates an IBAN string via ISO-13616 country length table, mod-97 checksum, and BBAN structural parse, returning per-check breakdown.
- [Agent402 UK Business Day Calculator](https://www.zero.xyz/c/agent402-uk-business-day-calculator-09383f66/llms.txt): $0.001/call via x402. Adds or subtracts N business days from a start date, optionally accounting for UK bank holidays by region
- [Agent402 UK Haversine Great-Circle Distance](https://www.zero.xyz/c/agent402-uk-haversine-great-circle-distance-eb6289c4/llms.txt): $0.001/call via x402. Computes the straight-line great-circle distance between two lat/lon coordinate pairs using the Haversine formula, returning the result in km or miles.
- [Agent402 UK — Business Day Checker](https://www.zero.xyz/c/agent402-uk-business-day-checker-08b42a53/llms.txt): $0.001/call via x402. Checks whether a given date is a business day, accounting for weekends and optionally UK bank holidays by region.
- [Agent402 ISIN Validator](https://www.zero.xyz/c/agent402-isin-validator-c8824699/llms.txt): $0.001/call via x402. Validates a 12-character ISIN string against ISO 6166 format rules and Luhn check digit — returns country code, NSIN, and per-check results.
- [Agent402 UK Black-Scholes Options Pricer](https://www.zero.xyz/c/agent402-uk-black-scholes-options-pricer-123f6531/llms.txt): $0.002/call via x402. Computes exact closed-form Black-Scholes price and Greeks (delta, gamma) for a European call or put option given spot, strike, time to expiry, risk-free rate, and volatility.
- [Agent402 UK Regex Tester](https://www.zero.xyz/c/agent402-uk-regex-tester-36dbab6d/llms.txt): $0.001/call via x402. Tests a JavaScript regex pattern against a text string and returns whether it matched, the match value, and pattern validity
- [Agent402 UK Bank Holidays](https://www.zero.xyz/c/agent402-uk-bank-holidays-fbdaf8ea/llms.txt): $0.001/call via x402. Returns official UK public bank holidays for England & Wales, Scotland, and Northern Ireland from GOV.UK, filterable by region and date range.
- [Agent402 ISBN Check Digit Validator](https://www.zero.xyz/c/agent402-isbn-check-digit-validator-21163fd3/llms.txt): $0.001/call via x402. Validates the check digit of an ISBN-10 or ISBN-13 number per ISO 2108, returning validity, kind, and bookland prefix status
- [Agent402 UK Batch Validation](https://www.zero.xyz/c/agent402-uk-batch-validation-8b105b1f/llms.txt): $0.01/call via x402. Validates up to 50 email addresses, IBANs, phone numbers, Luhn card numbers, or JSON schemas in a single batched x402-paid call with per-item partial success reporting.
- [Agent402 Business Day Counter (Static Holidays)](https://www.zero.xyz/c/agent402-business-day-counter-static-holidays-0b56979b/llms.txt): $0.001/call via x402. Counts pure business days between two dates for a given country, excluding weekends and static public holidays, across US/DE/FR/IE/JP/AU/SG.
- [Agent402 UK Business Days Calculator](https://www.zero.xyz/c/agent402-uk-business-days-calculator-f0e62c6d/llms.txt): $0.001/call via x402. Counts business days between two dates (inclusive), optionally excluding UK bank holidays by region from GOV.UK OGL data, for SLA and delivery ETA calculations.
- [Agent402 UK LEI Validator](https://www.zero.xyz/c/agent402-uk-lei-validator-491b3959/llms.txt): $0.001/call via x402. Validates a 20-character Legal Entity Identifier (ISO 17442) for correct format and mod-97 checksum integrity
- [Agent402 UK Companies House Profile Lookup](https://www.zero.xyz/c/agent402-uk-companies-house-profile-lookup-b2ce83e2/llms.txt): $0.002/call via x402. Returns a lite Companies House profile (name, status, address, SIC codes, accounts due date) for a UK company by company number, using cached public register data.
- [Agent402 Datetime Normalizer](https://www.zero.xyz/c/agent402-datetime-normalizer-f50bf151/llms.txt): $0.001/call via x402. Converts Unix timestamps or ISO 8601 datetime strings into a canonical UTC ISO 8601 format, optionally applying a fixed UTC offset.
- [Agent402 UK Schema Batch Validator](https://www.zero.xyz/c/agent402-uk-schema-batch-validator-c058465c/llms.txt): $0.001/call via x402. Validates up to 30 fields of mixed types (email, phone, UUID, URL, datetime, IBAN, ETH/SOL/BTC addresses, regex, enum, range) in a single batch call for $0.001 USDC.
- [Agent402 Solana Address Validator](https://www.zero.xyz/c/agent402-solana-address-validator-a9467e82/llms.txt): $0.001/call via x402. Validates whether a string is a well-formed Solana address by checking base58 decoding and 32-byte length — does not verify on-chain account existence.
- [Agent402 UK Email Syntax Validator](https://www.zero.xyz/c/agent402-uk-email-syntax-validator-5dec57ce/llms.txt): $0.001/call via x402. Validates email address syntax (format only, no DNS/MX lookup) and returns the parsed domain and a boolean valid_syntax flag.
- [Agent402 UK Currency Code Validator](https://www.zero.xyz/c/agent402-uk-currency-code-validator-ab96eee5/llms.txt): $0.001/call via x402. Validates whether a currency code is a known common ISO 4217 code or stablecoin (USDC/EURC) before performing FX operations
- [Agent402 UK Pre-Action Validation Kit](https://www.zero.xyz/c/agent402-uk-pre-action-validation-kit-a7525f33/llms.txt): $0.003/call via x402. Validates email, IBAN, phone, UK VAT, UK company number, Vocalink bank modulus (sort code + account number), and currency/country codes in a single batch call before payout or CRM entry
- [Agent402 UK – Sharpe Ratio Calculator](https://www.zero.xyz/c/agent402-uk-sharpe-ratio-calculator-9ae1332e/llms.txt): $0.002/call via x402. Computes the Sharpe ratio from a series of period returns and a risk-free rate, quantifying risk-adjusted investment performance.
- [Agent402 UK JSON Format & Validate](https://www.zero.xyz/c/agent402-uk-json-format-validate-ea964107/llms.txt): $0.001/call via x402. Validates and pretty-prints a JSON string, returning parse errors or a formatted version with configurable indentation
- [Agent402 UK Impermanent Loss Calculator](https://www.zero.xyz/c/agent402-uk-impermanent-loss-calculator-4fa137fb/llms.txt): $0.002/call via x402. Calculates Uniswap-style constant-product AMM impermanent loss given a price ratio between old and new token prices.
- [Agent402 VAT Number Format Validator](https://www.zero.xyz/c/agent402-vat-number-format-validator-7f7c8bbc/llms.txt): $0.001/call via x402. Validates VAT number format against official rules for EU27, GB, XI, and EL country codes without performing live VIES database checks
- [Agent402 CAIP-2 Chain ID Parser](https://www.zero.xyz/c/agent402-caip-2-chain-id-parser-769ba3bc/llms.txt): $0.001/call via x402. Parses and validates CAIP-2 chain identifiers (e.g. eip155:8453, solana:mainnet) into their namespace, reference, and human-readable label components
- [Agent402 UK – Cron Next Fire Times](https://www.zero.xyz/c/agent402-uk-cron-next-fire-times-84c07e1d/llms.txt): $0.001/call via x402. Returns the next N scheduled fire times for a given cron expression, with full IANA timezone awareness.
- [Agent402 UK Bank Account Modulus Validator](https://www.zero.xyz/c/agent402-uk-bank-account-modulus-validator-b486f42d/llms.txt): $0.001/call via x402. Validates UK sort code and account number pairs using Vocalink modulus check algorithms (MOD10/11/DBLAL with exceptions) — checksum only, not bank name or account existence
- [Agent402 UK Postcode Format Normalizer](https://www.zero.xyz/c/agent402-uk-postcode-format-normalizer-04d27a65/llms.txt): $0.001/call via x402. Validates and normalizes a UK postcode string into standard outward+inward format (e.g. 'SW1A 1AA'), confirming structural correctness without geo lookup.
- [Agent402 UK Data Normalizer](https://www.zero.xyz/c/agent402-uk-data-normalizer-466632fd/llms.txt): $0.001/call via x402. Normalizes raw email, phone, UUID, URL, or datetime values into their canonical forms
- [Agent402 EORI Format Validator](https://www.zero.xyz/c/agent402-eori-format-validator-711e4f2d/llms.txt): $0.001/call via x402. Validates the structural format of an EORI (Economic Operators Registration and Identification) number, returning the parsed country code and format validity — no live customs registry lookup.
- [Agent402 UK Email Normalizer](https://www.zero.xyz/c/agent402-uk-email-normalizer-4db3025c/llms.txt): $0.001/call via x402. Normalizes an email address to its canonical lowercase local@domain form, validating syntax structure without performing MX/DNS checks.
- [Agent402 Ethereum Address EIP-55 Checksum Validator](https://www.zero.xyz/c/agent402-ethereum-address-eip-55-checksum-validator-dfc2dfb9/llms.txt): $0.001/call via x402. Validates and normalizes an Ethereum address to its EIP-55 checksummed form, returning validity status and canonical casing.
- [Agent402 CAIP-10 Account ID Parser](https://www.zero.xyz/c/agent402-caip-10-account-id-parser-422bb6fa/llms.txt): $0.001/call via x402. Parses and validates CAIP-10 account identifiers (namespace:reference:address) into their structured components for cross-chain identity resolution
- [Agent402 ISO-8601 Duration Parser](https://www.zero.xyz/c/agent402-iso-8601-duration-parser-5b0b478e/llms.txt): $0.001/call via x402. Parses an ISO-8601 duration string (e.g. P1DT2H30M) into its component parts (days, hours, minutes, etc.) plus a total_seconds value
- [Agent402 Holiday Regions List](https://www.zero.xyz/c/agent402-holiday-regions-list-5de1368a/llms.txt): $0.001/call via x402. Returns the list of supported country/region codes for which static public holiday data is available
- [Agent402 JSON Schema Validator](https://www.zero.xyz/c/agent402-json-schema-validator-c9bd1502/llms.txt): $0.001/call via x402. Validates a JSON instance against a JSON Schema (type, required, properties, enum, min/max) and returns a deterministic pass/fail result with errors
- [Agent402 UK Compound Interest Calculator](https://www.zero.xyz/c/agent402-uk-compound-interest-calculator-0eebf382/llms.txt): $0.002/call via x402. Calculates compound interest given a principal, rate, number of periods, and compounding frequency
- [Agent402 UK Sort Code Validator](https://www.zero.xyz/c/agent402-uk-sort-code-validator-840d291f/llms.txt): $0.001/call via x402. Validates and normalises a UK bank sort code into ##-##-## format, confirming digit structure without performing a bank lookup.
- [Agent402 IBAN Validator](https://www.zero.xyz/c/agent402-iban-validator-8f802d5f/llms.txt): $0.001/call via x402. Validates an IBAN's structure offline using ISO 13616 length rules and mod-97 checksum, returning a canonical electronic-format string for SEPA/payout use.
- [Agent402 UK Hash Digest](https://www.zero.xyz/c/agent402-uk-hash-digest-9ce7e528/llms.txt): $0.001/call via x402. Computes SHA-256, SHA-1, MD5, or SHA-512 hex digests of arbitrary UTF-8 text strings
- [Agent402 URL Normalizer](https://www.zero.xyz/c/agent402-url-normalizer-d15296d6/llms.txt): $0.001/call via x402. Normalizes a URL to its canonical form by lowercasing the host, stripping default ports, and sorting query parameters.
- [Agent402 UK JSON Patch](https://www.zero.xyz/c/agent402-uk-json-patch-010c01c2/llms.txt): $0.001/call via x402. Applies RFC 6902 JSON Patch operations (add/remove/replace/move/copy/test) to a JSON document atomically, returning the patched result.
- [Agent402 LLM Model Rates Table](https://www.zero.xyz/c/agent402-llm-model-rates-table-6ec58a6f/llms.txt): $0.001/call via x402. Returns a static list-price table of LLM model input/output costs in USD per million tokens for use as budget gates in agent workflows.
- [Agent402 UK Crypto Address Validator](https://www.zero.xyz/c/agent402-uk-crypto-address-validator-d630f1bb/llms.txt): $0.001/call via x402. Validates cryptocurrency wallet addresses for ETH (EIP-55 checksum), Solana (base58-32), and Bitcoin (Base58Check, bech32, bech32m) formats with automatic or explicit chain detection.
- [Agent402 UK JSON Diff](https://www.zero.xyz/c/agent402-uk-json-diff-e1b087eb/llms.txt): $0.001/call via x402. Computes a structural diff between two JSON objects, returning added, removed, and changed paths.
- [Agent402 UK Batch Utility Processor](https://www.zero.xyz/c/agent402-uk-batch-utility-processor-27eccf6e/llms.txt): $0.01/call via x402. Execute up to 50 deterministic utility operations in a single paid batch: hashing, base64, JSON formatting/diffing, text metrics, markdown-to-HTML, slugification, and UUID generation.
- [Agent402 BIC/SWIFT Format Validator](https://www.zero.xyz/c/agent402-bic-swift-format-validator-ecd4eb1b/llms.txt): $0.001/call via x402. Validates the format of a BIC/SWIFT code (ISO 9362, 8 or 11 characters) and extracts structured components like country and bank code
- [Agent402 UK Luhn Checksum Validator](https://www.zero.xyz/c/agent402-uk-luhn-checksum-validator-efe37a54/llms.txt): $0.001/call via x402. Validates a digit string using the Luhn algorithm and returns a masked version of the number in the response.
- [Agent402 UK JWT Decoder](https://www.zero.xyz/c/agent402-uk-jwt-decoder-7c474065/llms.txt): $0.001/call via x402. Decodes a JWT token's header and payload without verifying the signature, for debugging OIDC and agent tokens mid-task.
- [Agent402 UK Holiday Calendar (Static Multi-Region)](https://www.zero.xyz/c/agent402-uk-holiday-calendar-static-multi-region-f2ab796b/llms.txt): $0.001/call via x402. Returns a static list of public holidays for a given country and year, covering US, DE, FR, IE, JP, AU, and SG, with no external API dependency.
- [Agent402 UK Phone Number E.164 Normalizer](https://www.zero.xyz/c/agent402-uk-phone-number-e-164-normalizer-7305710a/llms.txt): $0.001/call via x402. Normalizes a phone number string into E.164 international format with an optional default country code hint
- [Agent402 UK Ethereum Address Validator](https://www

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