# FlyCode ## FlyCode Docs - [What is FlyCode?](https://docs.flycode.com/docs/introduction/what-is-flycode.md): What FlyCode is: AI failed payment recovery for Stripe, Shopify, Braintree and PayPal subscriptions, trained on Visa and Mastercard network data, priced on results. - [What causes failed payments and involuntary churn?](https://docs.flycode.com/docs/introduction/what-causes-payment-failures-and-involuntary-churn.md): The causes of failed subscription payments: insufficient funds, generic declines, outdated card credentials and issuer risk rules, and why most are recoverable. - [How teams handle failed payments before FlyCode](https://docs.flycode.com/docs/introduction/how-teams-handle-failed-payments-before-flycode.md): Why fixed retries and email-first dunning underperform: banks and card networks score each transaction differently, so one rule for every failure loses revenue. - [Involuntary churn and failed payments](https://docs.flycode.com/docs/introduction/involuntary-churn-and-failed-payments.md): Involuntary churn explained: how failed payments cancel paying customers, how much revenue it costs, and how FlyCode's recovery engine reduces it. - [Analyze your subscription churn (free report)](https://docs.flycode.com/docs/introduction/analyze-your-subscription-churn-free-report.md): Get a free failed payment audit: see which decline types cost you most, your current recovery rate, and how much smarter retry timing would recover. - [Supported payment and subscription platforms](https://docs.flycode.com/docs/integrations/supported-payment-and-subscription-platforms.md): Platforms FlyCode connects to: Stripe, Braintree, PayPal, Adyen, Checkout.com, Chargebee, Recurly, and Shopify via Recharge, Skio, Stay AI and Loop, with status. - [How FlyCode handles Shopify subscription failed payments](https://docs.flycode.com/docs/integrations/how-flycode-handles-shopify-subscription-failed-payments.md): How FlyCode recovers failed Shopify subscription payments on Recharge, Skio, Stay AI and Loop: what replaces built-in dunning, retry limits, no double dunning. - [Stripe integration guide: connect FlyCode to Stripe Billing](https://docs.flycode.com/docs/integrations/stripe-integration-guide-for-flycode.md): Connect FlyCode to Stripe Billing step by step: prerequisites, installing the verified Stripe app, retry and email settings to change, API calls, go-live checklist. - [How to manage failed payments in Stripe](https://docs.flycode.com/docs/integrations/how-to-manage-failed-payments-in-stripe.md): How to manage failed payments in Stripe: configure Smart Retries and retry days, choose what happens to the subscription, and where the defaults stop short. - [Braintree and PayPal integration guide: connect FlyCode](https://docs.flycode.com/docs/integrations/how-to-connect-flycode-to-your-braintree-paypal-account.md): Connect FlyCode to Braintree or PayPal to recover failed subscription payments: restricted role, API user, merchant account, go-live checklist, troubleshooting. - [Recharge integration guide: connect FlyCode to Recharge](https://docs.flycode.com/docs/integrations/step-by-step-integrate-flycode-with-recharge.md): Connect FlyCode to Recharge for Shopify subscriptions: install from the Recharge marketplace, change three payment settings, go live, and avoid double dunning. - [Skio integration guide: install FlyCode on Skio](https://docs.flycode.com/docs/integrations/how-to-install-flycode-on-skio.md): Install FlyCode on Skio for Shopify subscriptions: sign up, invite FlyCode as a Shopify collaborator, activate in Skio's marketplace, launch and troubleshoot. - [Stripe <> FlyCode](https://docs.flycode.com/docs/integrations/stripe.md): How to install the FlyCode app from the Stripe App Marketplace, what it does with charges in error state, and the safeguards it applies before going live. - [Guides](https://docs.flycode.com/docs/guides.md): Long-form guides on failed payment recovery: how FlyCode works, dunning, Stripe Smart Retries, decline codes, involuntary churn, recovery ROI, trial recovery and migrations. - [How FlyCode works: architecture of the recovery engine](https://docs.flycode.com/docs/guides/how-flycode-works-architecture-of-the-recovery-engine.md): How FlyCode recovers failed subscription payments: the signals it reads, the per-merchant model that decides each retry, the actions it takes and the safeguards. - [Failed trial-to-paid payments on Stripe: why they hide and how to recover them](https://docs.flycode.com/docs/guides/failed-trial-to-paid-payments-on-stripe-why-they-hide-and-how-to-recover-them.md): Why failed free trial conversions are invisible in Stripe reporting, how much revenue they hide, and how FlyCode recovers and reports them separately. - [Reactivation: winning back customers cancelled for non-payment](https://docs.flycode.com/docs/guides/reactivation-winning-back-customers-cancelled-for-non-payment.md): How FlyCode Reactivation wins back Stripe customers cancelled after a failed payment: trigger, timing, branding, promo code guidance and templates. - [Backup payment methods on Stripe for subscription recovery](https://docs.flycode.com/docs/guides/backup-payment-methods-on-stripe-for-subscription-recovery.md): How to collect and use a backup card on Stripe subscriptions: what Stripe does and does not do, consent language, and how FlyCode's adaptive backup cards work. - [Priority recovery and dynamic recovery: handling high-value failed invoices](https://docs.flycode.com/docs/guides/priority-recovery-and-dynamic-recovery-handling-high-value-failed-invoices.md): Handling high-value failed invoices: score by ARR, LTV, tenure and CAC, extend recovery for the right customers, and set lifecycle rules per product and segment. - [Recovery SMS: when to add SMS to failed payment outreach](https://docs.flycode.com/docs/guides/recovery-sms-when-to-add-sms-to-failed-payment-outreach.md): When SMS improves failed payment recovery, how to coordinate it with retries and email, consent and TCPA basics, timing, templates and expected results. - [Migrating to FlyCode from Paddle Retain, Churnkey or Churn Buster](https://docs.flycode.com/docs/guides/migrating-to-flycode-from-paddle-retain-churnkey-or-churn-buster.md): Migrate to FlyCode from Paddle Retain, Churnkey's recovery module or Churn Buster: what to turn off, the cutover order, and what to expect in week one. - [Stripe decline codes reference: meaning, soft or hard, and what to do](https://docs.flycode.com/docs/read-more/stripe-decline-codes-reference-meaning-soft-or-hard-and-what-to-do.md): Every Stripe decline code in one table: meaning, soft or hard, whether to retry, and the recovery action to take, with links to full explainers for each code. - [Card network retry rules for failed payments: Visa and Mastercard](https://docs.flycode.com/docs/read-more/card-network-retry-rules-for-failed-payments-visa-and-mastercard.md): Visa and Mastercard retry rules for declined recurring payments: attempt limits, the 30-day and 24-hour windows, never-retry codes, fees and a compliance checklist. - [Failed payment recovery glossary](https://docs.flycode.com/docs/read-more/failed-payment-recovery-glossary.md): Failed payment recovery glossary: involuntary churn, dunning, soft and hard declines, decline codes, Smart Retries, Card Account Updater, network tokens and more. - [FlyCode vs Churnkey for failed payment recovery](https://docs.flycode.com/docs/read-more/flycode-vs-churnkey-for-failed-payment-recovery.md): FlyCode vs Churnkey: Churnkey is a cancel-flow tool with a recovery module that stacks retries on Stripe; FlyCode replaces the retry engine. Features, pricing, fit. - [FlyCode vs Butter Payments for failed payment recovery](https://docs.flycode.com/docs/read-more/flycode-vs-butter-payments-for-failed-payment-recovery.md): FlyCode vs Butter Payments: both replace the retry engine with ML; they differ on integrations, backup payment routing, outreach, network data and time to deploy. - [Payment recovery platforms compared 2026](https://docs.flycode.com/docs/read-more/payment-recovery-platforms-compared-2026.md): 2026 comparison of failed payment recovery platforms: FlyCode, Stripe Smart Retries, Butter, Churnkey, Paddle Retain, Vindicia, Redux and more, with rates and pricing. - [Recovery metrics and reporting reference](https://docs.flycode.com/docs/read-more/recovery-metrics-and-reporting-reference.md): Definitions and formulas for failed payment recovery metrics: recovery rate, baseline, incremental lift, time to recovery, attempts per recovery, outreach funnel. - [Involuntary churn benchmarks by segment](https://docs.flycode.com/docs/read-more/involuntary-churn-benchmarks-by-segment.md): Involuntary churn benchmarks by order value, payment method, business model and industry, plus recovery rate benchmarks by tool and published FlyCode results. - [FlyCode pricing model explained](https://docs.flycode.com/docs/read-more/flycode-pricing-model-explained.md): How FlyCode pricing works: a percentage of revenue recovered above your measured baseline, no seats, minimums or setup fees, and a 45-day money-back guarantee. - [Changelog: product and documentation updates](https://docs.flycode.com/docs/read-more/changelog-product-and-documentation-updates.md): Dated log of FlyCode product releases and documentation changes, newest first: Reactivation, trial-to-paid recovery, Shopify guides, decline code reference and more. - [Involuntary churn: the hidden revenue killer](https://docs.flycode.com/docs/involuntary-churn-hidden-revenue-killer.md): What involuntary churn is, how much MRR failed payments cost subscription businesses, benchmark recovery rates by segment, and a five-step plan to reduce it. - [The cost of failed payments and recovery ROI](https://docs.flycode.com/docs/failed-payment-cost-recovery-roi.md): A framework to calculate the true cost of failed payments using remaining customer lifetime value, with ROI tables by MRR level and a CFO-ready business case. - [Dunning management: the 2026 guide](https://docs.flycode.com/docs/dunning-management-2026-guide.md): Dunning management in 2026: why email-first dunning underperforms, the silent-recovery-first playbook, software comparison, metrics and an implementation guide. - [Subscription payment decline codes guide for Stripe](https://docs.flycode.com/docs/subscription-payment-decline-codes-guide-for-stripe.md): Reference of Stripe subscription decline codes, soft versus hard declines, what each code means, and the retry or dunning strategy that recovers each one. - [Stripe Smart Retries: complete guide (2026)](https://docs.flycode.com/docs/stripe-smart-retries-complete-guide.md): How Stripe Smart Retries work, how to configure them, their limits, card network retry rules, real recovery rates and how specialized tools replace or extend them. --- # Agent Instructions This documentation is published with GitBook. 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