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v2 is being deprecated. All new integrations should use v3. v2 remains online today for backwards compatibility with existing integrations, but will be removed in a future release. Migrate to v3 when convenient.

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When to use v2 vs v3

Use v3 if you are building anything new. v3 is the current Magic Patterns API: it covers everything v2 does (single-shot design creation) plus iteration, file reads/writes, version history, and publishing. The same API key works for both v3 and the MCP server. Use v2 only if you are already integrated against POST /api/v2/pattern and not yet ready to migrate. The same API key works for both v2 and v3 endpoints, so there’s no key churn when you move over.

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v2 quickstart

1

Log in

Sign in (or create an account) at magicpatterns.com.
2

Create an API key

Open Settings → API Keys and click Create Key. Copy the key immediately — you can only see it once.
3

Send a request

Use the key in the x-mp-api-key header.

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Rate limits

1000 generations per 10 hours per key. Contact us if you need a higher limit.

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v2 endpoint

POST /v2/pattern

Create a single design from a prompt. Returns the generated source and compiled files.

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Migrating to v3

The v3 equivalent of POST /v2/pattern is POST /v3/designs with a prompt in the body. The same API key authenticates both. See v3 Getting Started for the full walkthrough.