# Stytch Connected Apps vs Vercel Connect

> Vercel Connect scores 68.8 (B) on agent readiness against Stytch Connected Apps's 60.8 (C), and leads in 6 of 7 scored categories. Stytch Connected Apps leads on reliability. Both do auth oauth. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/stytch-connected-apps-vs-vercel-connect
- Markdown: https://www.anchorterminal.com/compare/stytch-connected-apps-vs-vercel-connect.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/stytch-connected-apps-vs-vercel-connect.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/stytch-connected-apps-vs-vercel-connect.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-09

Vercel Connect scores 68.8 (B) on agent readiness against Stytch Connected Apps's 60.8 (C), and leads in 6 of 7 scored categories. Stytch Connected Apps leads on reliability. Both do auth oauth.

- Stytch Connected Apps: grade C, 60.8/100, rank #444 of 842. Markdown https://www.anchorterminal.com/tools/stytch-connected-apps.md · JSON https://www.anchorterminal.com/api/v1/tools/stytch-connected-apps.json
- Vercel Connect: grade B, 68.8/100, rank #195 of 842. Markdown https://www.anchorterminal.com/tools/vercel-connect.md · JSON https://www.anchorterminal.com/api/v1/tools/vercel-connect.json

## Which one, for what

### Stytch Connected Apps (C)

Good for: A team that needs an OAuth 2.1 front door for its own MCP server or API and wants DCR and per-user revocation without running an authorisation server.

Ahead on:
- Reliability, 73 against 63

Also in its favour:
- No incidents deducted, where Vercel Connect loses 3 points for them

Watch for: No outbound token vault, so it can't hold your users' third-party tokens

### 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:
- Schema & documentation, 84 against 64
- Agent ergonomics, 75 against 65
- Security & auth, 83 against 66
- Payments & pricing, 40 against 20
- Maintenance & community, 81 against 62
- Transparency & trust, 77 against 66

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

| Category | Weight | Stytch Connected Apps | Vercel Connect | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 73 | 63 | Stytch Connected Apps +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 64 | 84 | Vercel Connect +20 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 75 | Vercel Connect +10 |
| Security & auth | 14% (17.5 this run) | 66 | 83 | Vercel Connect +17 |
| Payments & pricing | 10% (12.5 this run) | 20 | 40 | Vercel Connect +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 62 | 81 | Vercel Connect +19 |
| Transparency & trust | 7% (8.8 this run) | 66 | 77 | Vercel Connect +11 |
| Negative events | ≤15 | 0 | -3 | |
| **Total** | | **60.8 · C** | **68.8 · B** | |

## Facts side by side

| Fact | Stytch Connected Apps | Vercel Connect |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Stytch (Twilio) | Vercel Inc. |
| Hosted endpoint | `https://api.stytch.com` | `https://api.vercel.com` |
| Transports | HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT (SDKs), platform closed | Proprietary 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 documented | no | no |
| llms.txt | yes | yes |
| Last release | 2026-08-14 | 2026-10-06 |
| Terms last updated | 2026-07-16 | 2026-06-01 |
| Privacy policy last updated | 2026-04-09 | 2026-06-01 |
| Customer content may train models | not found in the text | yes, with an opt-out |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | not found in the text | not found in the text |
| Arbitration or class-action waiver | yes | yes |
| Popularity | 116 stars, 349k npm/wk | 16k stars, 738k npm/wk |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**Stytch Connected Apps.** OAuth 2.1 authorisation server with DCR, CIMD and PKCE out of the box. No outbound token vault, so it can't hold your users' third-party tokens.

**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

### Stytch Connected Apps

1. Fetch `{project-domain}/.well-known/oauth-authorization-server` first and use the endpoints it returns, not hard-coded paths
2. Register with `token_endpoint_auth_method` none and PKCE S256 when the agent can't keep a secret
3. Expect a 401 with protected resource metadata from the MCP server, then register and authorise
4. Ask only for scopes the user's roles can grant, or the consent page will refuse them
5. Back off exponentially on a 429, since no Retry-After header is documented

### 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, Stytch Connected Apps or Vercel Connect?

Vercel Connect scores 68.8 (B) on agent readiness against Stytch Connected Apps's 60.8 (C), and leads in 6 of 7 scored categories. Stytch Connected Apps leads on reliability.

### Do Stytch Connected Apps and Vercel Connect need an API key?

Both take an API key or an OAuth sign-in.

### Can an agent call Stytch Connected Apps and Vercel Connect without installing anything?

Yes. Stytch Connected Apps has a hosted endpoint at https://api.stytch.com and Vercel Connect at https://api.vercel.com.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/stytch-connected-apps-vs-vercel-connect.json, and with the fewest tokens: https://www.anchorterminal.com/compare/stytch-connected-apps-vs-vercel-connect.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "stytch-connected-apps", "b": "vercel-connect"}`. From a terminal: `anchor compare stytch-connected-apps vercel-connect`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/stytch-connected-apps.json and https://www.anchorterminal.com/api/v1/tools/vercel-connect.json

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