> ## Documentation Index
> Fetch the complete documentation index at: https://docs.gr4vy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Shift4 i4go

> Connect to Shift4 i4go to create PSP tokens from card details collected via Secure Fields.

export const connector = {
  id: "shift4i4go-card",
  displayName: "Shift4 i4go",
  provider: "",
  method: "card",
  mode: "card",
  category: "card",
  features: "create_token redirect_requires_popup verify_credentials",
  supportedCountries: "US",
  supportedCurrencies: "USD"
};

export const ConnectorCapabilities = ({data}) => {
  const CAPABILITIES = [{
    keys: ["three_d_secure_pass_through"],
    label: "3-D Secure",
    description: "Gr4vy runs the 3DS authentication and sends the results to the provider on the authorization.",
    cardOnly: true
  }, {
    keys: ["three_d_secure_hosted"],
    label: "3-D Secure (provider-hosted)",
    description: "The provider runs the 3DS authentication itself, redirecting the buyer to its own page.",
    cardOnly: true
  }, {
    keys: ["partial_authorization"],
    label: "Partial authorization",
    description: "Support partial approval responses."
  }, {
    keys: ["zero_auth"],
    label: "Zero auth",
    description: "Verify a payment method without charging it."
  }, {
    keys: ["void"],
    label: "Void",
    description: "Cancel an authorized transaction before capture."
  }, {
    keys: ["incremental_authorization"],
    label: "Incremental authorization",
    description: "Increase the amount of an existing authorization before capture."
  }, {
    keys: ["direct_capture"],
    label: "Direct capture",
    description: "Capture a payment immediately at authorization.",
    hideWhenUnsupported: true
  }, {
    keys: ["delayed_capture"],
    label: "Delayed capture",
    description: "Authorize a payment and capture it at a later time."
  }, {
    keys: ["partial_capture"],
    label: "Partial capture",
    description: "Capture a portion of the authorized amount."
  }, {
    keys: ["over_capture"],
    label: "Over capture",
    description: "Capture more than the originally authorized amount."
  }, {
    keys: ["multi_capture"],
    label: "Multiple captures",
    description: "Capture one authorization in several partial captures."
  }, {
    keys: ["tracking_details"],
    label: "Shipment tracking",
    description: "Forward shipment tracking details to the provider on capture."
  }, {
    keys: ["refunds"],
    label: "Refunds",
    description: "Refund a captured payment."
  }, {
    keys: ["partial_refunds"],
    label: "Partial refunds",
    description: "Refund a portion of the captured amount."
  }, {
    keys: ["settlement_reporting"],
    label: "Settlement reporting",
    description: "Automatic settlement and reconciliation reporting."
  }, {
    keys: ["create_session"],
    label: "Create session",
    description: "Create a connector session for client-side flows."
  }, {
    keys: ["network_tokens_default", "network_tokens_toggle"],
    label: "Network tokens",
    description: "Network-level tokenization for improved approval rates.",
    cardOnly: true
  }, {
    keys: ["open_loop", "open_loop_toggle"],
    label: "Open loop",
    description: "Charge stored cards with card data from the Gr4vy vault, so merchant-initiated payments aren't tied to the connection that stored the card.",
    optionalKey: "open_loop_toggle",
    optionalNote: "Off by default. The provider must allow it before you turn it on for the connection.",
    cardOnly: true
  }, {
    keys: ["issuer_based_installments"],
    label: "Issuer installments",
    description: "Ask the issuer to split a single payment into installments with installment_count.",
    cardOnly: true,
    hideWhenUnsupported: true
  }, {
    keys: ["digital_wallets"],
    label: "Digital wallets",
    description: "Apple Pay, Google Pay, and other wallet integrations."
  }, {
    keys: ["payment_method_tokenization", "payment_method_tokenization_toggle"],
    label: "Payment method tokenization",
    description: "Store payment methods outside of transactions."
  }, {
    keys: ["transaction_sync"],
    label: "Transaction sync",
    description: "Synchronize transaction state from the connector."
  }, {
    keys: ["create_token"],
    label: "Tokenization",
    description: "Create a token from card details collected via Secure Fields.",
    hideWhenUnsupported: true
  }, {
    keys: ["delete_token"],
    label: "Delete token",
    description: "Delete a stored token.",
    hideWhenUnsupported: true
  }, {
    keys: ["verify_credentials"],
    label: "Verify credentials",
    description: "Validate the configured credentials against the connector.",
    hideWhenUnsupported: true
  }];
  const raw = data && data.features;
  const enabled = typeof raw === "string" ? new Set(raw.split(/\s+/).filter(Boolean)) : Array.isArray(raw) ? new Set(raw) : new Set(Object.keys(raw || ({})).filter(key => raw[key]));
  const isOn = entry => entry.keys.some(key => enabled.has(key));
  const isNonCard = data && data.method && data.method !== "card";
  const renderGroup = (title, entries, supported) => {
    if (entries.length === 0) return null;
    const mark = supported ? "✓" : "✕";
    const markColor = supported ? "#16a34a" : "#9ca3af";
    return <div style={{
      marginTop: "1rem"
    }}>
        <div style={{
      fontSize: "0.75rem",
      fontWeight: 600,
      letterSpacing: "0.05em",
      textTransform: "uppercase",
      opacity: 0.6,
      marginBottom: "0.25rem"
    }}>
          {title}
        </div>
        {}
        <div role="list">
          {entries.map(entry => <div role="listitem" key={entry.label} style={{
      display: "flex",
      gap: "0.5rem",
      alignItems: "baseline",
      padding: "0.3rem 0",
      opacity: supported ? 1 : 0.7
    }}>
              <span aria-hidden="true" style={{
      color: markColor,
      fontWeight: 700,
      flexShrink: 0
    }}>
                {mark}
              </span>
              <span>
                <strong>{entry.label}</strong>
                {entry.description ? <span style={{
      opacity: 0.85
    }}> — {entry.description}</span> : null}
                {supported && entry.optionalKey && entry.keys.every(key => key === entry.optionalKey || !enabled.has(key)) ? <span style={{
      opacity: 0.85
    }}> {entry.optionalNote}</span> : null}
              </span>
            </div>)}
        </div>
      </div>;
  };
  const visible = isNonCard ? CAPABILITIES.filter(entry => !entry.cardOnly) : CAPABILITIES;
  const supported = visible.filter(isOn);
  const unsupported = visible.filter(entry => !isOn(entry) && !entry.hideWhenUnsupported);
  return <div>
      {renderGroup("Supported", supported, true)}
      {renderGroup("Not supported", unsupported, false)}
      <p style={{
    opacity: 0.7,
    fontSize: "0.8125rem"
  }}>
        This list is for guidance only. It doesn't guarantee availability or
        create any rights, and the provider may need to enable some features for
        your account.
      </p>
    </div>;
};

export const ConnectorHeader = ({data, name: nameProp, method: methodName, logo, category: categoryProp, catalog, providers}) => {
  const [logoStage, setLogoStage] = useState(0);
  const [chipLogoFailed, setChipLogoFailed] = useState(false);
  const [anchors, setAnchors] = useState({});
  useEffect(() => {
    const found = {};
    for (const id of ["capabilities", "supported-countries", "supported-currencies", "supported-payment-methods"]) {
      found[id] = Boolean(document.getElementById(id));
    }
    setAnchors(found);
  }, []);
  const hasData = Boolean(data && data.id);
  if (!hasData && !(nameProp && logo)) return null;
  const CATEGORY_LABELS = {
    card: "Cards",
    bank: "Banking",
    bnpl: "BNPL",
    cash: "Cash vouchers",
    crypto: "Crypto",
    wallet: "Wallets",
    tokenization: "Tokenization"
  };
  const DISPLAY_NAME_OVERRIDES = {
    authorizenet: "Authorize.net",
    cardpointe: "CardPointe",
    cybersource: "Cybersource",
    dlocal: "dLocal",
    shift4i4go: "Shift4 i4go",
    tokenex: "TokenEx",
    "worldine travelhub": "Worldline TravelHub"
  };
  const HIGHLIGHTS = [{
    keys: ["three_d_secure_pass_through", "three_d_secure_hosted"],
    label: "3-D Secure",
    cardOnly: true
  }, {
    keys: ["network_tokens_default", "network_tokens_toggle"],
    label: "Network tokens",
    cardOnly: true
  }, {
    keys: ["digital_wallets"],
    label: "Digital wallets"
  }, {
    keys: ["delayed_capture"],
    label: "Delayed capture"
  }, {
    keys: ["partial_capture"],
    label: "Partial capture"
  }, {
    keys: ["refunds"],
    label: "Refunds"
  }, {
    keys: ["partial_refunds"],
    label: "Partial refunds"
  }, {
    keys: ["zero_auth"],
    label: "Zero auth"
  }, {
    keys: ["settlement_reporting"],
    label: "Settlement reporting"
  }];
  const d = hasData ? data : {};
  const method = d.method || "";
  const provider = !hasData ? "" : method && d.id.endsWith(`-${method}`) ? d.id.slice(0, -(method.length + 1)) : d.id.split("-")[0];
  const fix = value => DISPLAY_NAME_OVERRIDES[(value || "").toLowerCase()] || value || "";
  const name = fix(d.provider) || nameProp || fix(d.displayName) || provider;
  const displayName = fix(d.displayName);
  const productName = !hasData ? "" : method === "card" ? d.provider ? displayName : "" : methodName || (d.provider && displayName !== name ? displayName : "");
  const methodLed = Boolean(productName);
  const cardProduct = methodLed && method === "card";
  const category = categoryProp || (method === "card" && !cardProduct ? "" : CATEGORY_LABELS[d.category] || "");
  const flowLabel = d.category !== "bank" ? "" : d.mode === "bank" ? "Stored in Gr4vy" : d.mode === "redirect" ? "Redirect" : "";
  const providerLogo = hasData ? `/assets/connectors/providers/${provider}.svg` : logo;
  const methodLogo = `/assets/connectors/methods/${method}.svg`;
  const title = methodLed ? productName : name;
  const chipLabel = !hasData ? "" : methodLed ? `via ${name}` : methodName;
  const chipLogo = cardProduct ? "" : methodLed ? providerLogo : methodLogo;
  const logos = methodLed && !cardProduct ? [methodLogo, providerLogo] : [providerLogo];
  const primaryLogo = logos[logoStage] || null;
  const enabled = new Set((d.features || "").split(/\s+/).filter(Boolean));
  const highlights = HIGHLIGHTS.filter(h => !(h.cardOnly && method !== "card") && h.keys.some(k => enabled.has(k)));
  const codes = value => (value || "").split(/\s+/).filter(Boolean);
  const providerSet = new Set(codes(providers));
  const members = !hasData && catalog && providerSet.size > 0 ? catalog.filter(e => providerSet.has(e.provider)) : [];
  const union = key => new Set(members.flatMap(e => codes(e[key]))).size;
  const methodsCount = members.length;
  const countries = hasData ? codes(d.supportedCountries).length : union("countries");
  const currencies = hasData ? codes(d.supportedCurrencies).length : union("currencies");
  const border = "1px solid rgba(128, 128, 128, 0.2)";
  const labelStyle = {
    fontSize: "0.6875rem",
    fontWeight: 600,
    letterSpacing: "0.05em",
    textTransform: "uppercase",
    opacity: 0.6
  };
  const chipStyle = {
    display: "inline-flex",
    alignItems: "center",
    gap: "0.3rem",
    padding: "0.1rem 0.5rem",
    borderRadius: "999px",
    border,
    fontSize: "0.8125rem",
    whiteSpace: "nowrap"
  };
  const renderStat = (label, value, anchor) => <a href={anchors[anchor] ? `#${anchor}` : undefined} style={{
    display: "flex",
    flexDirection: "column",
    gap: "0.1rem",
    textDecoration: "none",
    borderBottom: "none",
    color: "inherit",
    minWidth: "6rem"
  }}>
      <span style={labelStyle}>{label}</span>
      <span style={{
    fontSize: "1.25rem",
    fontWeight: 600
  }}>{value}</span>
    </a>;
  return <div className="not-prose" style={{
    border,
    borderRadius: "0.75rem",
    padding: "1.25rem",
    margin: "1rem 0 1.5rem",
    display: "flex",
    flexDirection: "column",
    gap: "1rem"
  }}>
      <div style={{
    display: "flex",
    alignItems: "center",
    gap: "1rem"
  }}>
        {primaryLogo ? <img src={primaryLogo} alt={`${title} logo`} width="56" height="56" onError={() => setLogoStage(logoStage + 1)} style={{
    width: "3.5rem",
    height: "3.5rem",
    borderRadius: "0.5rem",
    margin: 0,
    flexShrink: 0
  }} /> : <span aria-hidden="true" style={{
    width: "3.5rem",
    height: "3.5rem",
    borderRadius: "0.5rem",
    border,
    display: "flex",
    alignItems: "center",
    justifyContent: "center",
    fontSize: "1.5rem",
    fontWeight: 600,
    flexShrink: 0
  }}>
            {title.charAt(0).toUpperCase()}
          </span>}
        <div style={{
    display: "flex",
    flexDirection: "column",
    gap: "0.35rem",
    minWidth: 0
  }}>
          <span style={{
    fontSize: "1.25rem",
    fontWeight: 600,
    lineHeight: 1.2
  }}>{title}</span>
          <span style={{
    display: "flex",
    flexWrap: "wrap",
    gap: "0.4rem",
    alignItems: "center"
  }}>
            {chipLabel ? <span style={chipStyle}>
                {chipLogoFailed || !chipLogo ? null : <img src={chipLogo} alt="" width="16" height="16" onError={() => setChipLogoFailed(true)} style={{
    width: "1rem",
    height: "1rem",
    borderRadius: "0.2rem",
    margin: 0
  }} />}
                {chipLabel}
              </span> : null}
            {category ? <span style={{
    ...chipStyle,
    opacity: 0.75
  }}>{category}</span> : null}
            {flowLabel ? <span style={{
    ...chipStyle,
    opacity: 0.75
  }}>{flowLabel}</span> : null}
          </span>
        </div>
      </div>

      {methodsCount > 0 || countries > 0 || currencies > 0 || highlights.length > 0 ? <div style={{
    display: "flex",
    flexWrap: "wrap",
    gap: "1rem 2rem",
    paddingTop: "1rem",
    borderTop: border
  }}>
        {methodsCount > 0 ? renderStat("Payment methods", methodsCount, "supported-payment-methods") : null}
        {}
        {countries > 0 ? renderStat("Countries", countries >= 200 ? "No limit" : countries, "supported-countries") : null}
        {currencies > 0 ? renderStat("Currencies", currencies >= 150 ? "No limit" : currencies, "supported-currencies") : null}
        {highlights.length > 0 ? <div style={{
    display: "flex",
    flexDirection: "column",
    gap: "0.35rem",
    flex: "1 1 16rem"
  }}>
            <span style={labelStyle}>Highlights</span>
            <span style={{
    display: "flex",
    flexWrap: "wrap",
    gap: "0.35rem"
  }}>
              {highlights.map(h => <span key={h.label} style={chipStyle}>
                  <span aria-hidden="true" style={{
    color: "#16a34a",
    fontWeight: 700
  }}>✓</span>
                  {h.label}
                </span>)}
              {anchors.capabilities ? <a href="#capabilities" style={{
    ...chipStyle,
    borderStyle: "dashed",
    textDecoration: "none",
    color: "inherit"
  }}>
                  All capabilities →
                </a> : null}
            </span>
          </div> : null}
      </div> : null}
    </div>;
};

<ConnectorHeader data={connector} name="Shift4 i4go" />

Shift4 i4go is a utility connector that creates a Shift4 PSP token from card details collected via Gr4vy [Secure Fields](/guides/payments/secure-fields/quick-start). It provides a secure way to produce a Shift4-specific token without raw card data reaching your servers.

This connector does not process payments. It is a tool to enable PSP tokenization with Shift4 independently of a payment transaction.

## How it works

To create a Shift4 PSP token, card details are collected via Gr4vy Secure Fields and passed directly to Shift4 for tokenization. The connector returns the resulting PSP token without charging the card.

The Shift4 i4go connector:

* **Reduces PCI scope** - Card details are collected via Gr4vy Secure Fields, so raw card data never reaches your servers.
* **Simplifies Shift4 integration** - Produce a Shift4 PSP token that can be used in server-side calls to Shift4's payment APIs.
* **Enables flexible workflows** - Tokenize cards independently of the payment step, supporting deferred or external payment flows.

## Setup

A Shift4 i4go account can be requested by contacting the Shift4 sales team via their
[website](https://www.shift4.com/get-started).

## Credentials

When setting up Shift4 i4go in the dashboard, configure the following credentials, which are obtained via the Shift4 i4go dashboard.

* **Access token** - The access token used to authenticate with the Shift4 i4go API.

## Usage

1. Add the Shift4 i4go connector in the Gr4vy dashboard and enter the access token.
2. Use Gr4vy [Secure Fields](/guides/payments/secure-fields/quick-start) to collect card details from the buyer. To store the card in Gr4vy at the same time, see [Secure Fields with stored cards](/guides/payments/secure-fields/stored-cards).
3. Submit the card details to Gr4vy. The connector sends them to Shift4 and returns a PSP token. To create or delete a PSP token for an already-stored payment method, use the [provision PSP token](/reference/payment-service-tokens/provision-payment-service-token) and [delete PSP token](/reference/payment-service-tokens/delete-payment-service-token) APIs.
4. Use the PSP token in your own server-side calls to Shift4's payment APIs to process a payment.

## Capabilities

<ConnectorCapabilities data={connector} />

This connector doesn't process payments, so Gr4vy doesn't send the [Mastercard Transaction Link Identifier (TLID)](/guides/features/recurring-payments/mastercard-tlid). Cards are stored with Shift4, which keeps and replays the TLID. Confirm with Shift4 how this applies to the payment calls you make with the token.


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