MCP authentication service

Your gated content, inside ChatGPT and Claude.

Let customers search and use the content they already pay for. We help connect your existing login and access rules to an MCP server, with a smooth journey back to the conversation.

Example: a member research library

Compare the battery reports in my library.

  1. Your familiar sign-inThe customer’s existing account
  2. A clear permission requestSearch and read my library
  3. Your service checks accessAccount · membership · document
Allowed sources, back in the chat

Relevant passages with links to the original reports.

Other members’ private content stays outside the result.

Illustrative flow. Your tools and scope follow your audit.
The overview

A familiar login. Your content rules.

Our MCP authentication service is a scoped implementation for businesses that want assistants to access private or paid content on a customer’s behalf. We design the connection around your identity provider, API, and permission model: the customer signs in and approves access; your service checks what they may search and read. OAuth connects the account. Your application remains responsible for subscriptions, roles, and content access.

The customer journey

Imagine a research membership. A subscriber asks: ‘Find the reports in my library about battery recycling and compare their conclusions.’ This is an illustrative journey we can scope against your API and chosen clients.

  • Connect your service. The customer enables your connection in their assistant. Workspace administrators may need to make it available first.
  • Use their familiar login. They sign in through your identity provider, with its existing account and verification policies. They do not paste a password into the conversation.
  • Approve a clear request. Explain that the assistant may search and read their library. Ask for the access that this workflow needs, and keep account changes outside that initial scope.
  • Return to the conversation. Search returns permitted reports; reading a selected report checks access again. Results include useful source references so the customer can open the original.
  • Keep access current. Design token renewal where supported, a clear reconnect path when needed, and permission checks that follow subscription or membership changes.

What you can make available

The starting point is an API that can return content and determine who may access it. We assess that foundation before quoting. You decide which content may be sent to an assistant and under what conditions.

  • Paid research and publishing. Search a subscriber’s entitled collection and retrieve relevant passages, with links to the source publication.
  • Member libraries and training. Find lessons, reference material, and guides available under the member’s plan.
  • Private customer documentation. Answer questions from a customer’s own workspace, product entitlement, or contracted support material.

Your access rules stay in charge

An active connection does not grant access to every document. For a member library, we recommend checking the authenticated account, granted capability, current entitlement, and requested item before returning content. Apply the same boundary to search snippets, counts, downloads, and shared caches.

Example access policy for a subscription library
Customer requestExpected behavior
Read an included reportReturn the allowed content with its source link.
Read a report outside their planReturn a permission outcome without exposing the protected text.
Supply another customer’s document IDCheck ownership or entitlement server-side; an ID is not permission.
Continue after access endsApply the current subscription policy; reconnecting does not restore a cancelled entitlement.
Use an expired or invalid tokenRequire valid authorization before executing the protected request.

What we scope and deliver

OAuth and OIDC are separately scoped items in our published pricing rules. Existing-server changes, identity-provider gaps, and custom entitlement work need review before a quote. Ongoing operation can be scoped with managed MCP hosting.

  • A connection design. Map your login provider, account model, content API, intended assistants, and initial tools. Identify gaps in entitlement checks before implementation.
  • MCP authorization integration. Configure discovery, OAuth client setup, consent, callback handling, and token validation for the agreed clients and identity provider.
  • Permission-aware tools. Connect search and reading to your application’s access checks. Define result fields, limits, and how downstream API credentials are handled.
  • End-to-end validation and handoff. Test allowed access, denied access, cross-account requests, expiry, and reconnect behavior with synthetic accounts. Document configuration and operational ownership.

Built for the actual client flow

For ChatGPT, OpenAI documents OAuth authorization with PKCE, discovery metadata, and per-request token validation for authenticated MCP connections. We validate the callback and client configuration against your chosen setup. See OpenAI’s authentication guidance.

For Claude, remote custom connectors support account connection and permission approval. Organization settings and the selected authentication method affect onboarding; shared credentials do not provide individual member identity. See Claude’s connector guidance.

Client availability, administrator policies, and any public directory review are separate from implementing your MCP server. We agree the target distribution path and test it; a working server does not guarantee a public listing.

The technical baseline is the MCP authorization specification and its security guidance. Tokens must be intended for the MCP server; downstream API access needs its own defined boundary. For the architecture detail, read our MCP OAuth guide.

Start with your content and identity system

Tell us what customers should be able to find, how they sign in today, where subscriptions and permissions live, and whether you already run an MCP server. Share public API documentation and an example workflow, without credentials or customer data.

Already have an MCP endpoint or a specific authentication problem? Describe your integration so we can review the scope. For a new API-to-MCP project, start with the free documentation-based audit below; implementation testing follows separately.

A few more details

Frequently asked questions

Can customers keep their existing account?

That is the intended design. We assess whether your identity provider and account model support the required flow, then scope the integration. A new customer account system is not assumed.

Does OAuth enforce paid subscriptions?

OAuth authorizes the connection and its permitted capabilities. Your application must still determine whether the customer currently has access to each requested item. Subscription status, organization membership, and content permissions belong in that decision.

Will customers need to sign in for every question?

The aim is to reuse a valid authorized connection. Renewal depends on the client, identity provider, and your policies. Expired sessions, revoked grants, or additional permissions may require the customer to reconnect or approve access again.

Can you work with an existing MCP server?

Bring the endpoint details, identity-provider documentation, and the flow you want to support. We review compatibility and ownership before quoting changes. The scope may cover authentication, permission checks, or the full content workflow.

Is a shared API key enough for gated member content?

A shared key does not identify each subscriber or establish their individual rights. A member-specific workflow needs a verified account and server-side permission checks. We scope that identity boundary rather than treating access to the endpoint as access to every member’s content.

Does private content stay entirely inside our systems?

Content returned to ChatGPT or Claude leaves your system for processing by that assistant provider. Decide which fields and passages may be returned and review the provider’s applicable data terms. Authentication controls access; it does not make returned content invisible to the assistant.