Grok subscription billing and payments made through PayBox are separate flows. To pay for a Grok subscription, use the billing or app-store route where you bought it. To authorize a payment action through Grok, review PayBox’s permissions and transaction details, approve only what you intend, then verify the completed transaction on the relevant network. A prompt saying a payment was prepared or submitted is not proof that it settled.
First, identify which payment flow you mean
“Grok payments” can mean either paying xAI for a Grok subscription or using a separate payment connector to authorize another transaction. The provider, approval process, and support route differ.
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| Payment path | What you are paying for | Who manages it | How to verify |
|---|---|---|---|
| Grok subscription | A Grok plan or its recurring billing | xAI for web purchases; Apple handles App Store transactions and refunds; Google Play manages subscriptions bought there, while xAI handles refunds for those purchases. See xAI’s Grok FAQ. | Check the account and purchase channel, then review the subscription or receipt with that provider. |
| PayBox connector | A separate payment or wallet action that you ask Grok to prepare or authorize | PayBox is a third-party connector announced for Grok by MoonPay; it is not Grok subscription billing. MoonPay identifies the operator as Launchpad Limited and says it is unregulated. See MoonPay’s announcement. | Use the operation details and, when available, the transaction reference to check the record on the corresponding network. |
Set up PayBox only if you intend to use a third-party payment connector
MoonPay announced PayBox availability in Grok on August 31, 2026. Its documented setup uses a custom MCP connector and OAuth authorization. Connector availability and interface labels can change, so confirm them in the current Grok app before proceeding.
- Open Grok’s connectors page.
- Choose New Connector, then Custom.
- Name the connector PayBox.
- Enter
https://api.paybox.sh/mcpas the connector URL and add it. - Complete PayBox sign-in and OAuth authorization. Review the account and permissions being authorized before continuing.
Grok’s subscription billing does not require this connector. Do not authorize it merely to manage or pay for a Grok plan.
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Choose permissions and approval settings conservatively
MoonPay describes two PayBox approval modes: Always Ask, which requires passkey approval for each transaction, and Autonomous, which permits activity within limits you define. PayBox’s documentation says sensitive or above-threshold operations pause for passkey approval and that each operation creates an audit event. Those are provider descriptions, not independent verification of this connector’s implementation.
- When learning the feature, or when the recipient or amount matters, choose approval for every transaction.
- If you use limits, set them to the narrowest amount and scope that serve the intended task; do not treat a limit as a substitute for reviewing each proposed action.
- Before authorizing, check the permission and spending limit shown. Decline if either grants broader access than you intended.
Review the proposed payment before approving
Check the transaction details in the approval request rather than relying on the wording of your conversation with Grok. Confirm:
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- Network: It is the network you intended to use.
- Asset: The currency or token is correct.
- Destination: The recipient address or account matches a trusted source.
- Amount: The amount is correct, including any displayed spending limit.
- Permission: The action fits the authorization you meant to grant.
Address formats and account types can be network-specific. Solana’s documentation describes address validation and user confirmation for cases that require review; see its transaction documentation. If any detail differs from the intended payment, decline and start again with corrected instructions. Do not approve a mismatched transaction in the hope that it can be fixed later.
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PayBox documents an operation lifecycle of submit, approve, and poll. A request can therefore be submitted without the underlying transaction being complete. Solana’s transaction lifecycle also distinguishes signing and broadcast from later inclusion, confirmation, or expiry; see its transaction pipeline documentation.
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- Wait for the operation to report completion and look for its transaction signature or hash.
- Open a trusted explorer or network interface for the transaction’s network and search using that reference.
- Compare the resulting record’s status, recipient, asset, and amount with the approval you intended to give.
- If there is no transaction reference, the status remains pending, or the record conflicts with the approval, do not assume the payment completed. Check PayBox’s operation or audit information and contact the relevant provider.
A passkey approval or successful submission is not, by itself, evidence of settlement. The network record is the way to check whether the transaction was included or whether it expired.
Revoke access when you are finished
PayBox says users can revoke an agent client and that changing permissions requires a new passkey approval. Review the connector and its grants periodically, particularly after using Grok on a shared or unfamiliar device. Revoke access you no longer need through the available PayBox controls.
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Manage subscription billing and get support through the right provider
For subscription issues, start with the channel used to purchase the plan. xAI says a subscription is tied to the account used to buy it, so if a plan is missing, check that you are signed in with the purchasing account before assuming you were charged twice.
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- Web purchase: While logged in, use Grok’s billing page to manage the subscription or payment method.
- App Store purchase: Apple handles the transaction and refund route.
- Google Play purchase: Manage the subscription in Google Play; xAI handles refunds for these purchases.
For a billing issue, xAI advises using the in-product Report an issue feature or replying to the receipt email. Include the account email, platform, invoice or receipt number, and a screenshot or conversation share link. For an issue with Grok on X, xAI’s FAQ directs users to X support because xAI does not have operational oversight of Grok on X. See the Grok FAQ.
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Understand the limits of the safety claims
Payment approvals and transaction checks can reduce mistakes, but they do not make an agentic payment risk-free. xAI’s Consumer Terms say users are responsible for agentic actions they direct and state that “SpaceXAI makes no representations regarding the accuracy, safety, or legality of any Agentic Action and disclaims all liability for Agentic Actions to the fullest extent permitted by law.” Treat PayBox and MoonPay’s descriptions of passkeys and cryptographic controls as provider claims, not an independent security assessment.
Quick Recap
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