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Auth for AI agents and MCP servers

Scalekit

Auth runtime for AI agents: delegated OAuth, an encrypted token vault and 500+ connectors so agents act as the user, plus drop-in OAuth 2.1 for MCP servers.

Visit scalekit.com ↗ Alternatives Free tier EU region
Scalekit homepage
§1

Overview

Scalekit is an identity layer for AI agents. When a user connects an app such as Gmail, Salesforce or Notion, Scalekit runs the OAuth consent flow under your brand, stores the tokens in an AES-256 encrypted vault and creates a per-user connected account. Your agent then calls tools through Scalekit's MCP proxy, and each call uses only that user's credentials and scopes, so tokens never enter the agent or the model.

It ships more than 500 prebuilt connectors with over 8,000 callable actions, custom connectors and an API proxy, integrations for LangChain and Google ADK, and logs that record who authorised each call and which agent made it. A second product adds OAuth 2.1 login, SSO and scopes to remote MCP servers so tools like Claude or Cursor can authenticate to them.

Pricing is by tool call. The free plan gives 5,000 calls a month with unlimited connected accounts. Growth is $99 a month for 100,000 calls, then $0.50 per 1,000, with custom connectors, branding and private Slack support; EU data residency is a $99 add-on. Enterprise adds VPC or on-prem deployment and a 99.99% SLA.

§2

Pricing and plans

Free tier

5,000 tool calls a month (hard stop), unlimited connected accounts, 500+ prebuilt connectors, bring your own credentials, 30-day audit logs, community and email support

At the limit Not stated The vendor does not say what happens at the limit, or we have not found it yet.

Plan Price What you get
Free Free 5,000 tool calls/mo, unlimited connected accounts, 500+ connectors
Growth $99/mo 100,000 tool calls then $0.50 per 1,000; custom connectors, API proxy, branding, private Slack
EU data residency $99/mo Add-on to Growth
Enterprise Custom Negotiated volume, VPC/on-prem, 99.99% SLA, SIEM integrations

Pricing on the page read covers AgentKit (agent tool calling). Scalekit also markets OAuth 2.1 login, SSO and scopes for MCP servers and passwordless app auth, but separate prices for those were not shown on the pricing page. The free plan's 5,000 calls is described both as a hard stop and as auto-upgrading to Growth; check before relying on it. Compliance certifications were not stated on the pages read.

Source: www.scalekit.com/pricing · prices as published, excluding tax.

§3

What it does

Delegated OAuth
Branded consent flows and per-user connected accounts so agents act as the user, not a shared service account.
Token vault
AES-256 encrypted token storage with automatic refresh; tokens stay out of agent context.
Connector catalog
500+ prebuilt connectors across MCP servers and APIs, plus custom connectors.
MCP server auth
Drop-in OAuth 2.1 with login, SSO and scopes for remote MCP servers.
Agent audit logs
Attributed logs of every tool call, exportable to a SIEM.
EU residency
EU data residency as a $99/mo add-on on Growth.
§4

Strengths and limitations

Strengths

  • Solves per-user credentials for agents without writing OAuth handlers
  • Unlimited connected accounts on the free plan
  • Large prebuilt connector catalog
  • EU data residency option

Limitations

  • Not a general user-login product for consumer apps; pricing is built around agent tool calls
  • Free plan capped at 5,000 tool calls a month
  • EU residency costs an extra $99/mo
  • Compliance certifications not stated on the pages read
§5

Who it suits

Good for

  • Products whose AI agents act in users' third-party apps
  • Teams shipping remote MCP servers that need OAuth
  • Internal agent rollouts needing per-employee attribution

Look elsewhere if

  • Apps that only need ordinary user sign-up and login
  • High-volume agents on a tiny budget
§6

Alternatives to Scalekit

Tool From Free option Stages
Zitadel Open-source multi-tenant identity (cloud or self-hosted)
$100/mo Free tier
Stytch Hosted auth API (B2B and consumer)
$125/mo Free tier
WorkOS AuthKit Hosted auth with enterprise SSO
$125/mo Free tier
Ory Network Headless IAM (open source and SaaS)
$770/yr Free tier
FusionAuth Self-hostable CIAM server
$162/mo Free tier
Authgear Open-source CIAM (cloud, VPC or one-time self-host licence)
$50/mo Free tier

All auth and identity →

§7

Questions

What does Scalekit do?

It handles OAuth flows, token storage and scoped tool calls so AI agents can act in third-party apps on behalf of a specific user.

Is Scalekit free?

The free plan includes 5,000 tool calls a month and unlimited connected accounts.

How much does Scalekit Growth cost?

$99 a month including 100,000 tool calls, then $0.50 per additional 1,000 calls.

Can Scalekit keep data in the EU?

Yes, EU data residency is a $99 per month add-on.

Sources read for this page