# Publishing a Substreams Package In this guide, you'll learn how to publish a Substreams package to the [Substreams Registry](https://substreams.dev). ### Prerequisites * You must have the Substreams CLI installed. * You must have a Substreams package (`.spkg`) that you want to publish. ### Step 1: Run the `substreams publish` Command 1. In a command-line terminal, run `substreams publish .spkg`. 2. If you do not have a token set in your computer, navigate to `https://substreams.dev/me`.
### Step 2: Get a Token in the Substreams Registry 1. In the Substreams Registry, log in with your GitHub account. 2. Create a new token and copy it in a safe location.
### Step 3: Authenticate in the Substreams CLI 1. Back in the Substreams CLI, paste the previously generated token.
2. Lastly, confirm that you want to publish the package.
That's it! You have successfully published a package in the Substreams registry. --- # 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.substreams.dev/how-to-guides/publish-package.md?ask= ``` 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.