# Fusion

Fusion is an action taken on the [Marketplace](/project-information/capsule-marketplace.md) combining one Thor [Keycard](/project-information/thorfi-keycards.md) & one Odin [Keycard](/project-information/thorfi-keycards.md), becoming a [Capsule](/project-information/thorfi-capsules.md) NFT.

{% hint style="info" %}
Keycards must be of the same variation in order to fuse - this means both must be from an [Origin Burn](/project-information/thorfi-nfts/nft-actions/origin-burn.md) or both from a [Drift Burn](/project-information/thorfi-nfts/nft-actions/drift-burn.md). An Origin burned keycard cannot be fused with a Drift burned keycard.
{% endhint %}

{% content-ref url="/pages/T0qFBemgJGIaokA6k6c6" %}
[ThorFi Capsules](/project-information/thorfi-capsules.md)
{% endcontent-ref %}

{% content-ref url="/pages/A8UpluojpNIcpT0Agy8f" %}
[Open A Capsule](/project-information/thorfi-nfts/nft-actions/open-a-capsule.md)
{% endcontent-ref %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.thorfi.io/project-information/thorfi-nfts/nft-actions/fusion.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.