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Head to head · Auth oauth · October 2026 research run

Microsoft Entra Agent ID vs Vercel Connect

Microsoft Entra Agent ID scores 74.4 (BB) on agent readiness against Vercel Connect's 68.8 (B), and leads in 2 of 7 scored categories. Vercel Connect leads on payments & pricing. Both do auth oauth.

Microsoft Entra Agent IDMicrosoft · HTTP API BB74.4/100#71 of 841 Vercel ConnectVercel Inc. · HTTP API B68.8/100#195 of 841

Which one, for what

Microsoft Entra Agent ID BB

Good for Organisations already on Microsoft Entra that want each agent to be a governed directory identity with tokens for Microsoft Graph, Azure and their own APIs.

Ahead on

  • Reliability, 91 against 63

Also in its favour

  • Agent-ready, a grade of BB or better
  • No incidents deducted, where Vercel Connect loses 3 points for them

Watch for

Conditional Access, ID Protection and governance for agents need Microsoft Agent 365, listed at $15 a user a month on yearly billing

Vercel Connect B

Good for Teams already deploying on Vercel whose agents need user or app tokens for Slack, GitHub, Microsoft, Linear, Snowflake or an MCP server without storing provider secrets.

Ahead on

  • Payments & pricing, 40 against 20

Watch for

Vercel's SLA says it does not apply to the APIs or CLI, so token requests carry no uptime commitment

Score by category

CategoryWeight this runMicrosoft Entra Agent IDVercel ConnectEdge
Reliability16%209163Microsoft Entra Agent ID +28
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.28784Microsoft Entra Agent ID +3
Agent ergonomics13%16.27175Vercel Connect +4
Security & auth14%17.58383even
Payments & pricing10%12.52040Vercel Connect +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.88081Vercel Connect +1
Transparency & trust7%8.87477Vercel Connect +3
Negative events≤150-3
Total74.4 · BB68.8 · B

Facts side by side

FactMicrosoft Entra Agent IDVercel Connect
KindHTTP APIHTTP API
VendorMicrosoftVercel Inc.
Hosted endpointhttps://graph.microsoft.com/v1.0/servicePrincipals/microsoft.graph.agentIdentityhttps://api.vercel.com
TransportsHTTPHTTP
AuthOAuthOAuth or key
PricingFreemiumFreemium
x402nono
LicenceProprietary service under Microsoft's terms. Microsoft.Identity.Web and the Auth SDK sidecar source are MITProprietary service under Vercel's Terms of Service and the Vercel Connect product terms. The @vercel/connect SDK and the Vercel CLI are Apache-2.0
Read-only variant documentednono
llms.txtnoyes
Last release2026-09-302026-10-06
Terms last updated2025-10-012026-06-01
Privacy policy last updated2026-09-012026-06-01
Customer content may train modelsyesyes, with an opt-out
Terms restrict automated accessyesnot found in the text
Terms restrict benchmarkingyesnot found in the text
Terms or service can change without noticeyesnot found in the text
Arbitration or class-action waivernot found in the textyes
Popularity787 stars16k stars, 738k npm/wk

Verdicts

Microsoft Entra Agent ID

Agent identities hold no credentials of their own, and Entra refuses high-privilege roles and Graph permissions for them. The token flow is a two-step exchange that Microsoft's own docs call complex and error-prone to implement by hand, and Conditional Access, risk detection and governance for agents need a paid Agent 365 licence.

Vercel Connect

Provider refresh tokens stay with Vercel, and code receives short-lived tokens tied to a project and environment through one call with a public OpenAPI definition. Vercel's SLA excludes its APIs, the status page records 94 minutes of elevated Connect errors on 10 September 2026, and the only SDK is TypeScript.

Before you call either

Microsoft Entra Agent ID

  1. Request tokens in two steps. The blueprint gets an exchange token with fmi_path set to the agent identity's client ID, then the agent identity trades it for a resource token
  2. Retry with exponential backoff when a create returns 400 Object with id not found straight after creating its parent object
  3. Send displayName, agentIdentityBlueprintId and a sponsor reference when creating an agent identity. All three are required
  4. Don't use the interactive /authorize flow. Agent identities are confidential clients and can't sign in to a page
  5. Keep the sidecar off any public network. Its /AuthorizationHeader endpoint hands out tokens to whoever can reach it

Vercel Connect

  1. Call getToken at request time and don't store the result. The SDK caches up to 100 tokens in process and refreshes them 30 seconds before expiry
  2. Pass scopes on every request. Since SDK 1.0.0 an omitted scopes defaults to ['*'], the connector's default scopes
  3. Catch UserAuthorizationRequiredError, call startAuthorization and send the user to the returned URL. Consent needs a person in a browser
  4. Outside Vercel, pass a Vercel access token as vercelToken. It can request only the app subject or its own user, not another user
  5. On a 429 wait one minute for the window to reset. Limits are 200 token requests a minute per team

Questions

Which is better for AI agents, Microsoft Entra Agent ID or Vercel Connect?

Microsoft Entra Agent ID scores 74.4 (BB) on agent readiness against Vercel Connect's 68.8 (B), and leads in 2 of 7 scored categories. Vercel Connect leads on payments & pricing.

Do Microsoft Entra Agent ID and Vercel Connect need an API key?

Microsoft Entra Agent ID uses an OAuth sign-in. Vercel Connect takes an API key or an OAuth sign-in.

Can an agent call Microsoft Entra Agent ID and Vercel Connect without installing anything?

Yes. Microsoft Entra Agent ID has a hosted endpoint at https://graph.microsoft.com/v1.0/servicePrincipals/microsoft.graph.agentIdentity and Vercel Connect at https://api.vercel.com.

Other comparisons with Microsoft Entra Agent ID or Vercel Connect

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