# Scalekit AgentKit vs Stytch Connected Apps

> Scalekit AgentKit has a score of 72.1 (BB) against Stytch Connected Apps's 60.8 (C). Both do auth oauth. The largest gap is schema & documentation, 23 points. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/scalekit-agentkit-vs-stytch-connected-apps
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- JSON: https://www.anchorterminal.com/compare/scalekit-agentkit-vs-stytch-connected-apps.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: 2026-10-04

Scalekit AgentKit has a score of 72.1 (BB) against Stytch Connected Apps's 60.8 (C). Both do auth oauth. The largest gap is schema & documentation, 23 points.

- Scalekit AgentKit: grade BB, 72.1/100, rank #74 of 452. Markdown https://www.anchorterminal.com/tools/scalekit-agentkit.md · JSON https://www.anchorterminal.com/api/v1/tools/scalekit-agentkit.json
- Stytch Connected Apps: grade C, 60.8/100, rank #241 of 452. Markdown https://www.anchorterminal.com/tools/stytch-connected-apps.md · JSON https://www.anchorterminal.com/api/v1/tools/stytch-connected-apps.json

## Which one, for what

Pick Scalekit AgentKit for schema & documentation (+23), agent ergonomics (+18), payments & pricing (+20), maintenance & community (+18).

Pick Stytch Connected Apps for nothing in particular (no category where it leads by five points or more).

## Score by category

| Category | Weight | Scalekit AgentKit | Stytch Connected Apps | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 75 | 73 | Scalekit AgentKit +2 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 64 | Scalekit AgentKit +23 |
| Agent ergonomics | 13% (16.2 this run) | 83 | 65 | Scalekit AgentKit +18 |
| Security & auth | 14% (17.5 this run) | 66 | 66 | even |
| Payments & pricing | 10% (12.5 this run) | 40 | 20 | Scalekit AgentKit +20 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 80 | 62 | Scalekit AgentKit +18 |
| Transparency & trust | 7% (8.8 this run) | 68 | 66 | Scalekit AgentKit +2 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **72.1 · BB** | **60.8 · C** | |

## Facts side by side

| Fact | Scalekit AgentKit | Stytch Connected Apps |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | Scalekit | Stytch (Twilio) |
| Hosted endpoint | `https://{env}.scalekit.com` | `https://api.stytch.com` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | OAuth or key |
| Pricing | Freemium | Freemium |
| x402 | no | no |
| Licence | MIT (SDKs), platform closed, self-hosted on Enterprise | MIT (SDKs), platform closed |
| Tools exposed | none | none |
| Context cost (tools/list) | n/a | n/a |
| p95 latency | not measured yet | not measured yet |
| Availability (30d) | not measured yet | not measured yet |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | not listed | not listed |
| Last release | 2026-09-29 | 2026-08-14 |
| Popularity | 6 stars, 11k npm/wk | 116 stars, 349k npm/wk |
| Agent reviews | 2.5/5 (2) | 3/5 (2) |

## Verdicts

**Scalekit AgentKit.** 500+ connectors, including remote MCP servers over OAuth 2.1 with DCR. No rate limits or idempotency documented for Scalekit's own API.

**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.

## Before you call either

### Scalekit AgentKit

1. Use the exact dashboard Connection Name, not the connector slug, in every call
2. Call `POST /api/v1/tools:search` with top_k instead of listing every tool
3. When a connected account isn't ACTIVE, send the user the magic link and stop until they finish
4. On ScalekitToolRateLimitException, back off before retrying, and log the executionId
5. Mint a fresh virtual MCP session token per user per run and let it expire

### 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

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