iso20022.qwer · 1.0.0ISO 20022 bank files: camt.053 statements (and camt.052 and 054) read into balances, entries and each payment's counterparty and reference, and pain.001 SEPA credit transfers built with checked IBANs and exact totals.7 views · 6 downloadsMT940 mt940.qwer · 1.0.0MT940 bank statements: accounts, opening and closing balances, and each transaction with its date, amount and counterparty.8 views · 6 downloadsLicence keys license_keys.qwer · 1.0.0Signed licence keys with a customer, features and an expiry date: made with your private key, checked offline, impossible to forge.6 views · 7 downloadsWebhooks webhooks.qwer · 1.0.0Check that a webhook came from Stripe, GitHub, Slack, Shopify or a Standard Webhooks sender, with timestamp tolerance; and sign your own.5 views · 9 downloadsCard numbers cards.qwer · 1.0.0Payment card numbers checked before they reach a payment provider: Luhn check digit, brand and length, expiry, and the number formatted or masked for receipts.7 views · 7 downloadsCurrencies currencies.qwer · 1.0.0ISO 4217 currencies: names, symbols, minor units and the countries using them, prices formatted, and amounts turned into the cents payment APIs take.6 views · 7 downloadsIBAN and BIC iban.qwer · 1.0.0IBANs checked (country, length, check digits) and printed as banks print them, and BICs checked.9 views · 8 downloadsUS routing numbers aba_routing.qwer · 1.0.0US bank routing numbers checked by their check digit and read for the Federal Reserve district and kind of institution, a check's MICR line read into routing, account and check number, and Canadian transit numbers.7 views · 6 downloadsStripe stripe.qwer · 1.0.0Stripe's API without an SDK: Checkout sessions and PaymentIntents, any endpoint called with nested form encoding and idempotency keys, amounts in each currency's minor units, and webhook events verified and read.7 views · 6 downloadsAdyen adyen.qwer · 1.0.0Adyen's Checkout API without an SDK: sessions for Drop-in, payments with their result codes turned into paid, failed, pending or waiting on the shopper, 3-D Secure details sent on, captures, refunds, cancels and reversals, amounts by Adyen's own table of minor units, and each webhook notification's HMAC checked.2 views · 7 downloadsEMV QR codes emv_qr.qwer · 1.0.0EMVCo merchant-presented QR codes: TLV read and written with nested templates and named fields, the CRC checked, and codes made for Thailand's PromptPay, Singapore's PayNow, Malaysia's DuitNow and any other scheme's merchant template.6 views · 10 downloadsMollie mollie.qwer · 1.0.0Mollie's Payments API without an SDK: payments and refunds with amounts in the exact decimals Mollie insists on, customers, mandates and recurring charges, lists followed through their next links, and webhooks taken as Mollie means them: only an id comes in, and the payment is fetched back to learn what happened.4 views · 8 downloadsNACHA ACH files nacha.qwer · 1.0.0US ACH files: fixed-width batches built with entry hash, control totals, trace numbers and padding to a block of ten, and files read back with routing check digits and totals checked, each problem naming its line, returns and notifications of change included.5 views · 6 downloadsPaddle Billing paddle.qwer · 1.0.0Paddle Billing's API without an SDK: prices, transactions and subscriptions, lists followed through their next links, subscription changes with the proration Paddle insists on, pauses, resumes and cancels, money as Paddle's strings of the lowest denomination, and the Paddle-Signature header checked with its timestamp and rotating keys.5 views · 7 downloadsPayPal paypal.qwer · 1.0.0PayPal's Orders API without an SDK: an OAuth token reused until it expires and renewed on a 401, orders created and captured, refunds, webhooks checked through PayPal's verify call on their exact bytes, and retries made safe with PayPal-Request-Id, each error given with PayPal's issue and debug id.3 views · 6 downloadsPix pix.qwer · 1.0.0Brazil's Pix: static BR Codes (copia e cola) built and read, EMV fields and CRC16-CCITT checked, each kind of key told apart with CPF and CNPJ check digits, and an SVG of the code.1 view · 7 downloadsRazorpay razorpay.qwer · 1.0.0Razorpay's API without an SDK: orders in paise, the signature Checkout hands the page checked against your own order, payments captured and refunded, lists walked by count and skip, webhook signatures, and rupees written with lakh and crore grouping.3 views · 7 downloadsSquare square.qwer · 1.0.0Square's API without an SDK: card payments taken at once or held and completed later, refunds, customers and catalog items, lists followed through their cursors, an idempotency key on every write that a retry reuses, money in each currency's smallest unit, and webhook signatures checked over the notification URL and body.2 views · 5 downloadsUPI payment links upi_qr.qwer · 1.0.0India's UPI deep links and QR payloads: upi://pay links built and read, VPAs checked, amounts held in paise so no float rounds them, the transaction limit applied, and an SVG of the code.4 views · 8 downloadsWise wise.qwer · 1.0.0Wise's Platform API without an SDK: profiles, quotes with their usable payment option picked out, recipients, transfers made safe to retry with a UUID of your own, funding from a balance, and the one-time token Wise answers with on a protected call, signed by your RSA key and the call sent again.3 views · 8 downloadsMoney split money_split.qwer · 1.0.0Money split fairly in whole cents, the parts always adding up: by ratios, evenly, into dated instalments, a restaurant bill by who had what with tax and tip, a group's shared expenses settled in few payments, and a plan prorated by days.7 views · 8 downloadsISO 8583 iso8583.qwer · 1.0.0ISO 8583 card payment messages packed and unpacked from a field spec given as data (fixed and variable fields in ASCII, BCD or binary, both bitmaps), with the 1987 fields built in, answers explained and sent to a host over TCP.7 views · 7 downloadsOther tags
files61import49api47text47network36forms34webhooks34search32devices31images31email30signing27monitoring26security26maps25uploads24printing23analytics22export22payments22validation20html19reports19database18integration18auth17binary16geo16barcodes15json14labels14logs14banking13invoices13notifications13svg13i18n12ids12iot12performance12sensors12time12calendar11dates11messages11seo11audio10config10documents10events10markdown10maths10storage10urls10ai9alerts9aws9backups9certificates9charts9dns9encryption9keys9languages9passwords9pdf9photos9privacy9social9testing9tls9xml9accounting8compression8finance8games8gps8http8locale8metrics8pagination8statistics8support8addresses7background7cache7chat7docs7geojson7google7llm7messaging7mobile7qr7secrets7shipping7sql7tokens7unicode7b2b6bots6calculators6css6dashboards6devops6embeddings6git6headers6jwt6links6oauth26settings6sign-up6spreadsheets6sso6udp6video6accessibility5admin5bookings5checksums5crm5delivery5experiments5game5history5industrial5integrity5location5memory5money5oauth5observability5phone5receipts5retries5service-account5sign-in5status5stores5tracking5writing5attachments4audit4books4caching4checkout4ci4cli4codes4colors4comments4compliance4counters4crawling4csv4debugging4dependencies4distributed4feeds4gis4health4healthcare4javascript4jobs4migration4podcasts4previews4push4random4rate-limits4reviews4rules4scheduling4scraping4seed4serialization4ssh4streaming4tickets4users4web42fa3assets3authentication3automation3azure3batch3bitcoin3browsers3cards3cars3code3cookies3dedupe3design3diff3ecommerce3encoding3firebase3fonts3forecasting3graphql3hardware3kv3markup3names3openstreetmap3ops3queues3ranking3realtime3releases3rss3shop3signals3sitemaps3sms3sounds3spam3sports3tags3templates3terminal3themes3tiles3tools3versions3word3abuse2access-control2address2archives2atom2authorization2autocomplete2avatars2base642building2cargo2catalog2cdn2changelog2chinese2cloud2cluster2configuration2containers2databases2directions2directory2discovery2docker2documentation2domains2downloads2duplicates2ebooks2editing2emv2exact2expiry2exports2fediverse2flags2folders2forecast2fractions2fun2gamification2gcp2gdpr2geocoding2glob2graphs2hls2identity2index2india2kafka2leases2lighting2lint2localization2locks2logistics2lookup2marine2microsoft2moderation2mongodb2multi-tenant2music2naming2news2newsletters2nosql2notes2npm2ocr2optimization2outdoors2partners2placeholders2places2planning2players2plc2policy2pos2power2pricing2protobuf2prototypes2pwa2query2radio2redis2reporting2robots2rpc2s32scada2scales2schedules2schema2secp256k12segments2servers2sessions2sha2562soap2solver2sqlite2supply-chain2tax2tcp2thumbnails2tooling2transactions2translation2translations2typos2upi2user-content2vehicles2wcag2weather2websockets2xss2yaml2a11ach1activitypub1agenda1aggregation1allen-bradley1allowlists1animation1apple1archive1arguments1arrow1asia1asn1asn11astronomy1atlassian1atproto1aviation1backup1baduk1base581bech321bioinformatics1bip211blake31blog1blogs1board1boards1bolt-111braille1branding1brazil1breaches1build1bulk1calendars1capture1cd1cdp1changes1chapters1chemistry1chess1chords1cities1clap1claude1clickhouse1code-style1colours1columnar1constellations1constraints1contacts1conversion1coordinates1coordination1couchdb1counting1coupons1cql1crawler1cryptography1custom-fields1cypher1dem1deploy1deployments1developer1diagrams1dice1dimacs1distance1dmx1dna1ed255191eip-551elasticsearch1elevation1embeds1embosser1emoji1energy1english1enterprise1equations1ethereum1excel1facets1family-tree1fasta1fastq1feature-flags1federation1feedback1fen1fido21firewall1fixed-width1fleet1forensics1formula1formulas1front-matter1fx1genealogy1generator1genetics1geohash1geoip1geotiff1gif1go1grafana1graph1grid1gzip1hex1hexagons1hilbert1hl71hmac1holdem1http21https1hvac1icmp1ics1incidents1inventory1invoice1ion1ios1ip1iptv1iso86011java1jql1json-ld1json-rpc1jsonl1julian-date1jupyter1keccak1keywords1kms1kubernetes1language1latex1ldap1lets-encrypt1libsodium1licences1licenses1licensing1lightning1linear-algebra1linked-data1listings1loans1local1localisation1logging1logic1mandates1mapbox1math1mathml1maxmind1maze1mbtiles1mcp1measurement-protocol1medical-imaging1meetings1meilisearch1memcached1merchant-of-record1merkle1meters1mfa1mgrs1middleware1midi1military1mmdb1mo1mockups1molar-mass1moon1morse1nat1navigation1neo4j1networks1newsletter1nfc1nginx1notebooks1oauth11oidc1omaha1on-call1onedrive1opa1open-meteo1openapi1opensearch1orbits1org-mode1osm1osrm1parquet1parsing1passkeys1passwordless1pathfinding1pbf1pgn1pgp1photography1pkce1planets1playlists1plugins1pmtiles1png1po1pods1poker1polyline1postgres1postgrest1powerpoint1probability1procedural1process1processes1productivity1profiles1projects1promql1puzzle1pxe1python1qdrant1quota1r21rabbitmq1range-requests1raster1rdf1readability1recommendations1reconciliation1recovery1recurring1refunds1remote1replication1repositories1reverse1revocation1rfc33391routers1routes1routing1rpg1sales1sandbox1sat1sca1scaling1science1screenshots1scripts1sdp1secured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