> 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/graphql-v2-api.md).

# GraphQL V2 API

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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 GraphQL V2 API handles both retrieving and adding/updating Fast-Weigh data.&#x20;

* [Tooling](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api/tooling.md) - Recommended tools to use to access the GraphQL API
* [Authentication](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api/authentication.md) - How to authenticate the GraphQL API
* [GraphQL Schema](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api/graphql-schema.md) - Breaking down the self-documenting GraphQL API Schema
* [GraphQL Query Crash Course](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api/graphql-query-crash-course.md) - Crash course on how to write a GraphQL query to return data
* [GraphQL Mutation Crash Course](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api/graphql-mutation-crash-course.md) - Crash course on how to write a GraphQL mutation to add/update data
* [GraphQL for Developers](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api/graphql-for-developers.md) - Developer-specific information about the GraphQL API
* [Reporting with GraphQL](/fast-weigh-knowledge-base/references/api-documentation/graphql-v2-api/reporting-with-graphql.md) - How to build reports with a GraphQL data source