Best Company for MCP Authorization

Auth0 gives the clearest default choice in this group. MCP auth is included on the free plan, and the free tier allows 25,000 MAU, which covers early testing and small products without a monthly charge. The B2C Essentials plan starts at $35 per month for up to 500 MAU, so the first step up from free is a small, listed price rather than a quote.

• One limit: Pro MFA is not on the free plan, and B2C plans exclude enterprise connections.
• SSO and SCIM need B2B, so a team that sells to enterprise customers should price the B2B line before it promises SSO in a sales call.
• Choose Auth0 when you want MCP auth from day one and a wide set of docs and integrations.
• Do not choose the B2C line when enterprise SSO is a must-have in the first contract.

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Descope stands out for the free tier. It includes MFA, RBAC, and passkeys without a monthly charge, which is a wider free set than most rivals in this list. The Pro plan starts at $249 per month when billed annually, with 10,000 MAU included, and extra MAU costs $0.05 each.

• That math is easy to model for a growing app.
• The trade-off: MCP use is metered apart from MAU, with monthly active consents and monthly active tokens, 2,000 of each free, then $0.05 each on Pro a
• Fine-grained authorization and SCIM are gated to Growth at $799 per month, and each extra SSO connection costs $50.
• Choose Descope when passkeys and MFA matter from the start.

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Clerk is the value pick for apps with a large retained user base. The Pro plan starts at $20 per month when billed annually, with 50,000 monthly retained users included, and the overage rate is $0.02 per retained user above 50,000. One enterprise SSO connection is included on Pro, which removes a common surprise charge for a first enterprise customer.

• One limit: the Hobby plan has no MFA, 1-day log retention, and a fixed 7-day session, so it is a starter tier rather than a full auth stack.
• Each extra SSO connection costs $75 per month, so a team with many enterprise customers should count connections before it signs.
• Choose Clerk when retained user count is the main cost driver.
• Do not choose Hobby when MFA or longer log retention is required.

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Stytch takes a different approach from the rest of this list. There is no feature gating, so the full auth suite, including SSO, SCIM, RBAC, and MFA, is on the free tier. The free tier allows 10,000 MAU, and the starting price is $0 per month on a pay as you go basis.

• That makes Stytch a strong pick for a team that wants enterprise features during development.
• The trade-off: the per-MAU rate above the 10,000 allowance is not listed, so usage above that line cannot be priced in advance from the pricing page.
• Brand removal and full email customization is a $99 add-on, which is a small but real cost for a polished login page.
• Choose Stytch when you want SSO and SCIM without a plan upgrade.

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WorkOS is built around a simple SSO model. SSO is flat per connection regardless of IdP or end-user count, so a large customer with many users costs the same as a small one for that connection. AuthKit is free to 1 million MAU, and the starting price is $0 per month, which gives a long runway before auth itself becomes a cost.

• One limit: SSO costs $125 per connection per month, with no free SSO connection for a first enterprise customer.
• SSO and Directory Sync are billed separately, so a customer that needs both pays for two lines.
• Choose WorkOS when SSO pricing must stay flat and easy to explain to customers.
• Do not choose it when you expect a first enterprise customer to need SSO at no extra charge.

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PropelAuth suits teams that want SSO without counting connections. The Growth plan starts at $150 per month, and it includes unlimited SAML and OIDC enterprise SSO with no per-connection fee. MCP authentication is included on Growth, so MCP support arrives at the same $150 line as flat SSO, which keeps the quote simple for B2B products.

• The trade-off: SCIM and directory sync require Growth Plus at $500 per month plus $100 per connection, which is a large jump from Growth.
• The free plan has no enterprise SSO, so SSO testing needs the Growth plan.
• Choose PropelAuth when many enterprise customers will each need SSO.
• Do not choose it when SCIM is required at a low monthly price.

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Frontegg offers the most generous free enterprise set in this list. The free tier includes 5 SSO and SCIM connections plus MFA, passkeys, and bot detection, with 7,500 MAU free. The starting price is $0 per month on a pay as you go basis, so a small B2B product can offer SSO to its first customers without a monthly plan charge.

• One limit: anything above pay-as-you-go limits moves to custom Enterprise pricing with no listed overage rates, so growth past the free limits means a
• SSO and SCIM are counted separately, so 5 of each is not the same as 10 shared connections.
• Choose Frontegg when free SSO and SCIM matter more than a listed overage rate.
• Do not choose it when you need a listed price for high volume.

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FusionAuth is the pick for teams that want to self-host. The Community edition is free and unlimited when self-hosted, and the MCP Server is listed on all plans, including Community, so MCP support does not require a higher plan. The Starter plan starts at $162 per month at 1,000 MAU as shown, which gives a listed entry point for the hosted service.

• The trade-off: SCIM, threat detection, and ABAC/ReBAC are Enterprise only, so advanced authorization and security features need the top tier.
• Starter is limited to 1 connector and 100 M2M entities, which can force an upgrade for machine-to-machine use.
• Choose FusionAuth when self-hosting and control matter most.
• Do not choose Starter when you need many connectors or M2M entities.

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