{"id":43459613,"url":"https://github.com/codinux-gmbh/fints4k","last_synced_at":"2026-02-03T05:21:25.138Z","repository":{"id":166643603,"uuid":"459740073","full_name":"codinux-gmbh/fints4k","owner":"codinux-gmbh","description":"Kotlin Multiplatform FinTS 3.0 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returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["banking","banking-api","fints","kotlin","kotlin-multiplatform"],"created_at":"2026-02-03T05:21:23.663Z","updated_at":"2026-02-03T05:21:25.131Z","avatar_url":"https://github.com/codinux-gmbh.png","language":"Kotlin","readme":"# fints4k\n\nfints4k is an implementation of the FinTS 3.0 online banking protocol used by most German banks.\n\nIt's fast, easy extendable and running on multiple platforms: JVM, Android, (iOS, JavaScript, Windows, MacOS, Linux).\n\n## Features\n- Retrieving account information, balances and turnovers (Kontoumsätze und -saldo).\n- Transfer money and real-time transfers (SEPA Überweisungen und Echtzeitüberweisung).\n- Supports TAN methods chipTAN manual, Flickercode, QrCode and Photo (Matrix code), pushTAN, smsTAN and appTAN.\n\nHowever, this is quite a low level implementation and in most cases not what you want to use.  \nIn most cases you want to use a higher level abstraction like [FinTs4kBankingClient](https://git.dankito.net/codinux/BankingClient).\n\n## Setup\nNot uploaded to Maven Central yet, will do this the next few days!\n\nGradle:\n```\nrepositories {\n    mavenCentral()\n    maven {\n        setUrl(\"https://maven.dankito.net/api/packages/codinux/maven\")\n    }\n}\n\n\ndependencies {\n    implementation(\"net.codinux.banking:fints4k:1.0.0-Alpha-16\")\n}\n```\n\nMaven:\n```\n\n// add Repository https://maven.dankito.net/api/packages/codinux/maven\n\n\u003cdependency\u003e\n   \u003cgroupId\u003enet.dankito.banking\u003c/groupId\u003e\n   \u003cartifactId\u003efints4k-jvm\u003c/artifactId\u003e\n   \u003cversion\u003e1.0.0-Alpha-16\u003c/version\u003e\n\u003c/dependency\u003e\n```\n\n\n## Usage\n\nQuite outdated, have to update it. In most cases use [FinTs4kBankingClient](https://git.dankito.net/codinux/BankingClient).\n\nSee e.g. [JavaShowcase](fints4k/src/test/java/net/dankito/banking/fints/JavaShowcase.java) or [FinTsClientTest](fints4k/src/test/kotlin/net/dankito/banking/fints/FinTsClientTest.kt).\n\n```java\n    // Set your bank code (Bankleitzahl) here.\n    // BankInfo contains e.g. a bank's FinTS server address, country code and BIC (needed for money transfer)\n    List\u003cBankInfo\u003e foundBanks = new InMemoryBankFinder().findBankByNameBankCodeOrCity(\"\u003cbank code, bank name or city\u003e\");\n\n    if (foundBanks.isEmpty() == false) { // please also check if bank supports FinTS 3.0\n        BankData bank = new BankDataMapper().mapFromBankInfo(foundBanks.get(0));\n\n        // set your customer data (customerId = username you use to log in; pin = online banking pin / password)\n        CustomerData customer = new CustomerData(\"\u003ccustomer_id\u003e\", \"\u003cpin\u003e\");\n\n        FinTsClientCallback callback = new SimpleFinTsClientCallback(); // see advanced showcase for configuring callback\n\n        FinTsClient finTsClient = new FinTsClient(callback, new Java8Base64Service());\n\n        AddAccountResponse addAccountResponse = finTsClient.addAccount(bank, customer);\n\n        if (addAccountResponse.isSuccessful()) {\n            System.out.println(\"Successfully added account for \" + bank.getBankCode() + \" \" + customer.getCustomerId());\n\n            if (addAccountResponse.getBookedTransactions().isEmpty() == false) {\n                System.out.println(\"Account transactions of last 90 days:\");\n                showGetTransactionsResponse(addAccountResponse);\n            }\n        }\n        else {\n            System.out.println(\"Could not add account for \" + bank.getBankCode() + \" \" + customer.getCustomerId() + \":\");\n            showResponseError(addAccountResponse);\n        }\n\n        // see advanced show case what else you can do with this library, e.g. retrieving all account transactions and transferring money\n    }\n```\n\n## Logging\n\nfints4k uses slf4j as logging facade.\n\nSo you can use any logger that supports slf4j, like Logback and log4j, to configure and get fints4k's log output.\n\n\n## Sample applications\n\n### WebApp\n\nDirectly requesting bank servers is forbidden in browsers due to CORS.\n\nIn order to use fints4k directly in browser you need a CORS proxy like the one from CorsProxy \n[Application.kt](SampleApplications/CorsProxy/src/main/kotlin/net/codinux/web/cors/Application.kt) or https://github.com/Rob--W/cors-anywhere.\n\nSet CORS proxy's URL in WebApp [main.kt](SampleApplications/WebApp/src/main/kotlin/main.kt).\n\nStart sample WebApp then with\n```shell\n ./gradlew WebApp:run --continuous\n```\n\n## License\n\nNot free for commercial applications. More details to follow or [contact](mailto:sales@codinux.net) us.","funding_links":[],"categories":[],"sub_categories":[],"project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcodinux-gmbh%2Ffints4k","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fcodinux-gmbh%2Ffints4k","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fcodinux-gmbh%2Ffints4k/lists"}