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RFC 8785 JSON Canonicalization Scheme (JCS) for .NET. Deterministic JSON serialization for hashing and signing: webhook signature verification, JWS/JWT payloads, verifiable credentials, audit trails. Zero... More information

SWIFT MT940 and MT942 bank statement parser for .NET. Parses end-of-day customer statements and intraday transaction reports into typed statements, balances, and statement lines: full :61: decomposition (value... More information

Fast fuzzy string matching and best-match extraction with rapidfuzz semantics: the Fuzz.Ratio/PartialRatio/token/WRatio scorer family, Levenshtein, Indel, Jaro-Winkler, Hamming and LCS distance kernels,... More information

Realistic password strength estimation for .NET: a faithful, modern port of the zxcvbn-ts (Dropbox zxcvbn) algorithm. Instead of composition rules (uppercase + digit + symbol), Zxcvbn scores what attackers... More information

Zero-dependency ISO 20022 bank statement parser for .NET. Parses camt.053 (statement), camt.052 (intraday report) and camt.054 (debit/credit notification) XML into a typed, ergonomic object model,... More information

JSON that comes out of an LLM: extract it from prose, repair it, and parse it while it streams. Partial parsing of truncated JSON with npm partial-json semantics, live typed snapshots from any token stream... More information

Fixed-width and positional flat-file parsing and writing for .NET: the bank-file and mainframe formats that CSV libraries cannot touch. Attribute or fluent schemas, implied decimals as decimal ("0000012345"... More information

URL normalization for .NET. Canonicalize URLs for equality checks, deduplication and cache keys with configurable, safe-by-default transforms. Zero external dependencies.

Sanctions name-screening for .NET against the OFAC SDN, OFAC Consolidated (non-SDN), UN Security Council and EU consolidated financial sanctions lists. Zero external dependencies, offline-capable, composable... More information

Dashboards as code for .NET: derive Grafana dashboards and Prometheus alert rules from the System.Diagnostics.Metrics instruments your app already defines. MeterScan captures instrument name, kind, unit and... More information

Time-value-of-money and cashflow math for .NET: PV, FV, PMT, IPMT, PPMT, RATE, NPER, NPV, IRR, MIRR, date-aware XNPV/XIRR and loan amortization schedules. Zero dependencies, decimal-precise money output.

Rule-based financial reconciliation engine for .NET. Match your ledger against processor settlement files, bank statements against internal books, invoices against payments: exact composite keys, amount... More information

Validate EU and UK VAT registration numbers offline: per-country format and check-digit verification without calling VIES. Zero dependencies, ISO 7064 and Luhn checksums for the countries that define them.

Decimal-precision math for money: Sqrt, Pow, Exp, Log, trigonometry and penny-exact allocation for System.Decimal. No binary floating point round-trip. Zero external dependencies.

Awaitility for .NET: poll until an asynchronous condition becomes true in tests, with AtMost, PollInterval and Until, built on TimeProvider for deterministic fake-clock testing. Zero external dependencies.

Maintained, tested, zero-dependency ISO 20022 SEPA payment-initiation library for .NET. Reads and writes both pain.001.001.09 (customer credit transfer) and pain.008.001.08 (customer direct debit), and... More information

Focused, zero-dependency RFC 5545 RRULE expander. Turns a recurrence rule string plus a start date into occurrence dates for billing cycles, dunning schedules, subscription renewals and reminders, without... More information

Verify inbound payment webhook signatures for Stripe, Paystack, Flutterwave, Shopify, GitHub, and Standard Webhooks in one API. Constant-time comparison and timestamp-based replay protection. Zero external... More information

Validate and parse SWIFT BIC (ISO 9362) business identifier codes. Structure, ISO 3166-1 country, location and branch parsing, test-BIC and primary-office detection. Zero external dependencies.

Deterministic PII detection and redaction for text leaving your perimeter: LLM prompts, logs, support tickets, exports. Finds and redacts emails, phone numbers, payment cards with Luhn validation and network... More information