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doc://integracoes/stripe
If you've integrated a payment gateway before, you expect the usual ritual: copy two keys and paste them into the system. With Stripe on MMNWEB, that's not how it works — you authorize the platform to charge on your account, and we store only its identifier. None of your keys ever leaves its place.
| Credential | Prefix | Can it be exposed? | Whose is it, on MMNWEB |
|---|---|---|---|
| Publishable key | pk_ | Yes — the only one safe outside the backend | Platform (Fragasoft) |
| Secret key | sk_ | No. Equivalent to the account's username + password | Platform (Fragasoft) |
| Restricted key | rk_ | No — same care as the secret key | Platform (Fragasoft) |
| Webhook secret | — | No. Not an API key — it validates that the event came from Stripe | Platform (Fragasoft) |
| Connect Client ID | ca_ | Identifies the platform in OAuth | Platform (Fragasoft) |
| Connected account ID | acct_ | Identifier of your account | Yours — the only thing we store |
There is also the separation between sandbox (test) and production (live): each mode has its own set of keys, and an object created in one mode doesn't exist in the other — the classic "the code is broken" that is actually mixed modes.
sk_ or rk_ leaves the server. Never by email, WhatsApp, ticket, screenshot, or repository. If it has already happened, rotate the key immediately in the Stripe dashboard.MMNWEB uses Stripe Connect, Standard type: the Stripe account is yours, complete and independent — your own dashboard, your own reports, a direct relationship with Stripe. You are the merchant of record: disputes (chargebacks), fraud, and negative balances are your responsibility, not Fragasoft's — a deliberate choice: we don't want to carry third-party risk, and you don't want an intermediary making decisions about your sale.
To charge on your account, the platform uses its own secret key (not yours) combined with your account's acct_…. That's why there is no technical reason for you to hand us any key — the acct_… identifies; it doesn't authorize withdrawals.
acct_…) is saved automatically.At no step do you type or paste a key. Before connecting, complete the Stripe onboarding (company details, bank details, identity verification) — that's where almost everyone gets stuck, and the reason is in the next section.
Having an acct_… does not mean the account can receive money. Stripe controls two separate capabilities: active charging (charges_enabled) and active transfers. An account with incomplete onboarding has a valid acct_… and still gets no payouts — the sale would fail silently or the money would get stuck.
acct_…. Until then, the button doesn't appear. If you're blocked: go back to the Stripe dashboard and complete whatever it asks for; as soon as it clears, MMNWEB updates on its own.Fragasoft defines a fee percentage for your project (contractual — you don't edit it). At charge time, the percentage becomes an absolute amount in cents sent as the application fee (application_fee_amount) — no percentage is sent to Stripe. Stripe splits it automatically: the net amount goes to your account, the fee goes to the platform. Nothing passes through Fragasoft's account — which is what keeps the operation outside third-party fund custody requirements.
You can revoke the authorization at any time. With a Standard account, you keep full access to your account, dashboard, and data — what you lose is the platform's ability to charge on your behalf. Revoking stops sales through MMNWEB; it doesn't block your Stripe account.
Do I need to send my secret key to support? No. Never. If anyone asks for it, be suspicious — we don't need it and we don't store it.
I tested in sandbox and it worked; in production it failed. They are separate universes. Confirm that the connected account is the production one and that its onboarding is complete.
Can I use PIX through Stripe? For PIX with split, MMNWEB's production path is Mercado Pago.
Key types · Secret key best practices · Connect OAuth reference
Related: Integrations overview · Mercado Pago (PIX) · Cielo
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