> For the complete documentation index, see [llms.txt](https://help.tacinsight.com/fast-weigh-knowledge-base/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.tacinsight.com/fast-weigh-knowledge-base/references/api-documentation.md).

# API Documentation

<figure><img src="/files/sGYg09OFTyLzvuSjCPDr" alt=""><figcaption></figcaption></figure>

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The GraphQL API is an additional feature. If you would like to add the GraphQL Api to your Fast Weigh subscription, contact us at *865-219-2980* or <support@tacinsight.com>.
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The Fast-Weigh GraphQL V2 API allows system integrators to interface with the Fast-Weigh data model to extend functionality and/or extract data for third-party use.

* [GraphQL V2 API](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api.md)
* [Webhooks](/fast-weigh-knowledge-base/references/api-documentation/webhooks.md)

***

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**Basic Authentication has been deprecated.**
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We have transitioned from using Basic Authentication with username/password credentials to token-based authentication. Existing integrations will continue to work, but please note that Basic Auth has been deprecated and will be removed in the future.

***

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The REST API and the GraphQL V1 API have been deprecated.
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We have transitioned to a unified GraphQL API for both querying and adding/updating data via the GraphQL V2 API. Existing integrations will continue to work, but please note that you should migrate to the new GraphQL API endpoint, and the old APIs will be removed in the future.\
\
You can quickly identify the version of the GraphQL API based on the endpoint.&#x20;

* **V1**: `https://<your-servername-here>.fast-weigh.dev/v1/graphql`
* **V2**: `https://graphql.fast-weigh.com/`