~/compare/scalekit

AuthSec vs Scalekit

Scalekit's MCP/Agent OAuth 2.1 stack and connector broker are genuinely strong, current products. AuthSec adds a shipped cross-org agent-delegation grant (XAA), SPIFFE/SPIRE workload identity, and an open-source, self-hostable deployment model that Scalekit doesn't offer.

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Decision snapshot

Best for AI agentsAuthSec

Best for MCP/agent OAuth speed-to-integrateScalekit

Agent-native fitAuthSec-first

Open-source auth + authzAuthSec only

Verified 2026-07-07 · full sources below

Quick take

Where each platform is genuinely strong, before the feature-by-feature detail.

AuthSec

SPIFFE/SPIRE certificate-based workload identity — Scalekit has none

XAA/ID-JAG ships as a real, production grant type; Scalekit's cross-app agent auth is still a blog post, not a product

M2M supports private_key_jwt in addition to client_credentials; Scalekit documents client_credentials only

RBAC includes access-approval and delegation workflows; Scalekit's RBAC is app-enforced token claims with no policy engine

Scalekit

MCP/Agent OAuth 2.1 is Scalekit's flagship, most current investment — DCR, AS metadata, PRM, resource indicators, plus the newer CIMD spec

Connector Broker for third-party tool calls is a real, actively marketed product (Slack, GitHub, Gmail, Salesforce, and more)

SAML/OIDC/SCIM B2B SSO stack is mature: per-customer IdP configuration without custom code, real-time SCIM webhook sync

Passkeys/WebAuthn shipped as a genuine product feature since earlier assessments

Feature matrix

Every claim below is sourced — see the footnote under each competitor answer.

23 areas where AuthSec leads

01Agents & MCP

Feature	AuthSec	Scalekit
Dynamic Client Registration (RFC 7591/7592) RFC 7591 Dynamic Client Registration, plus the newer Client ID Metadata Document (CIMD) spec for registration-free clients. — source	✓	✓
PKCE-only + resource indicators (RFC 8707) PKCE is mandatory; RFC 8707 resource indicators bind tokens to the MCP server URI. — source	✓	✓
AS metadata & OIDC discovery (RFC 8414) RFC 8414 authorization-server metadata plus RFC 9728 protected-resource metadata. — source	✓	✓
Lazy resource-server binding with admin approval	✓	Not documented

02Workload identity

03Enterprise authentication

04Access & governance

05Standards & RFCs

Best choice by use case

Pick the platform based on workload shape, not just protocol coverage.

Use case
Best choice

MCP OAuth for hosted SaaS apps

Scalekit

Outbound OAuth / tool-call broker for AI agents

Scalekit

Cross-org agent identity delegation (XAA)

AuthSec

SPIFFE/SPIRE workload identity

AuthSec

Self-hosted, open-source deployment

AuthSec

Verify it yourself.

Every capability above is open source and documented. Read the code, run it yourself, or talk to us about your specific migration.

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