The Tool Desk
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There are two interfaces to keep separate: xAI documents custom MCP connectors at grok.com/connectors, while current Grok Bot help describes integrations as plugins installed through Marketplace. Which route is available depends on the product and account; follow the labels shown in your own interface.
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How the PromptOT–Grok connection works
PromptOT manages your prompt library and exposes actions through the Model Context Protocol (MCP). Its documented tools include listing, creating, editing, versioning, publishing, and inspecting prompts. A connected Grok assistant can discover the tools and use the ones allowed by your credentials and configuration. See PromptOT’s MCP documentation and xAI’s connector instructions.
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The connector is a bridge to PromptOT, not a prompt-library import into Grok. Prompts remain managed in PromptOT, and the assistant calls the available tools when you ask it to work with them.
Choose a connection method
PromptOT documents a hosted HTTP MCP transport for browser-based clients and a local stdio package for desktop MCP clients. For Grok’s remote custom-connector flow, the hosted endpoint is the straightforward option. xAI says, “Your MCP server must be reachable over the public internet.” A local-only address is not reachable by Grok’s servers.
| Option | Best fit | Network and credential considerations |
|---|---|---|
| Hosted HTTP with OAuth | Browser-based or remote connector clients | Uses a hosted endpoint rather than a local process. PromptOT documents OAuth 2.1 + PKCE for browser-client authorization; complete the sign-in and consent flow if offered. |
| Local stdio with an MCP key | Desktop clients that launch a local MCP process | Runs locally, but Grok’s remote connector cannot reach it directly. Making a local service available through a tunnel exposes it to the public internet and adds another service and URL lifecycle to manage. |
For a self-hosted service or tunnel, expose only what the connector needs. Do not make sensitive internal systems publicly reachable merely to test a prompt workflow.
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Prepare PromptOT access
- Choose the intended permissions. PromptOT documents separate read, write, and AI scope categories. For finding and compiling prompts, start with the least access that supports that work. Add write access only if Grok needs to create or edit prompts; publishing requires particular care.
- For the local-key configuration, create an MCP key. In the PromptOT dashboard, open the project’s API Keys page and generate an MCP key. Select only the scopes needed for the intended tasks. Keep the key private and do not paste it into an ordinary chat message.
- For hosted OAuth, authorize through the sign-in flow. If the connector presents PromptOT’s OAuth authorization, sign in and review the requested consent and access before approving it.
Use the endpoint and authentication details shown in PromptOT’s current MCP setup instructions. Do not assume an endpoint path or field name from an older tutorial.
Connect using Grok’s custom MCP connector
xAI’s documented custom-connector path is separate from the Grok Bot Marketplace instructions. The available controls can vary by product or account, so use the labels currently shown in your Grok interface.
- Open grok.com/connectors.
- Select New Connector, then choose Custom, as described in xAI’s connector documentation.
- Enter PromptOT’s hosted MCP server URL using the current endpoint displayed in PromptOT’s setup documentation. Supply authentication details if Grok requests them.
- Complete any required authorization and save the connector.
- Check that Grok discovers the tools exposed by the PromptOT server.
If the connector cannot connect, first verify that the endpoint is publicly reachable and that the URL, authentication method, and permissions match PromptOT’s current instructions. A local stdio address by itself will not work for this remote route.
Use PromptOT through Grok Bot
Grok Bot has its own integration guidance. Current xAI help describes app integrations as plugins installed from Marketplace; it does not establish that every account has the same Settings → Plugins or Connectors labels reported in PromptOT’s tutorial. Consult xAI’s instructions for using the computer and apps and Grok Bot’s getting-started guidance for the Bot experience available to you.
- Open Marketplace in Grok Bot and look for the permitted PromptOT integration or connector flow available in your account.
- Install or connect it, then authenticate if prompted.
- In a conversation, attach or invoke the integration using the controls offered by the current Bot interface.
Availability can depend on account type and organizational connector policy. The vendor tutorial, published September 11, 2026, describes a Plugins/Connectors route, but its menu wording should not be treated as universal. The current xAI pages document Grok custom MCP connectors and Grok Bot Marketplace plugins as distinct paths.
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- Start with a read-only request, such as: “What prompts do I have in my
outboundproject?” This is an example query, not a guaranteed command syntax. - Check that the returned names or details match the project in PromptOT.
- Ask Grok to compile one prompt with a harmless test variable, then verify the result against the intended prompt and input.
- Only if you need prompt creation or edits, grant the required write scope and try a non-production change first. Review any proposed content in PromptOT before publishing it.
These checks help confirm that the connector is using the expected project and that the granted permissions match your workflow. They are validation steps, not a claim that the integration improves response speed or business outcomes.
Read access versus editing and publishing
PromptOT’s separate scope categories let you limit what the connection can do. The safer default for a prompt-finding workflow is read-oriented access; write permissions add the ability to alter shared prompt content. Grant only the scopes needed for the task, and keep a human review step before publishing changes to production.
Quick Recap
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