## Viewing attachments
You can preview most images, audio files, videos, or PDFs in the Braintrust UI. You can also download any file to view it locally.
We provide built-in support to preview attachments directly in playground input cells and traces.
In the playground, you can preview attachments in an inline embedded view for easy visual verification during experimentation:
In the trace pane, attachments appear as an additional list under the data viewer:
---
file: ./content/docs/guides/automations.mdx
meta: {
"title": "Automations"
}
# Automations
Automations let you trigger actions based on specific events in Braintrust. This makes it easier for you to execute common actions and integrate Braintrust with your existing tools and workflows.
### Max concurrency
The maximum number of tasks/scorers that will be run concurrently in the playground. This is useful for avoiding rate limits (429 - Too many requests) from AI providers.
### Strict variables
When this option is enabled, evaluations will fail if the dataset row does not include all of the variables referenced in prompts.
## Collaboration
Playgrounds are designed for collaboration and automatically synchronize in real-time.
To share a playground, copy the URL and send it to your collaborators. Your collaborators
must be members of your organization to view the playground. You can invite users from the settings page.
## Reasoning
Any headers you add to the configuration will be passed through in the request to the custom endpoint.
The values of the headers can also be templated using Mustache syntax.
Currently, the supported template variables are `{{email}}` and `{{model}}`.
which will be replaced with the email of the user whom the Braintrust API key belongs to and the model name, respectively.
If the endpoint is non-streaming, set the `Endpoint supports streaming` flag to false. The proxy will
convert the response to streaming format, allowing the models to work in the playground.
Each custom model must have a flavor (`chat` or `completion`) and format (`openai`, `anthropic`, `google`, `window` or `js`). Additionally, they can
optionally have a boolean flag if the model is multimodal and an input cost and output cost, which will only be used to calculate and display estimated
prices for experiment runs.
#### Specifying an org
If you are part of multiple organizations, you can specify which organization to use by passing the `x-bt-org-name`
header in the SDK:
### Iterative experimentation
Rapidly prototype with different prompts
and models in the [playground](/docs/guides/playground)
and models in the [playground](/docs/guides/playground)
### Performance insights
Built-in tools to [evaluate](/docs/guides/evals) how models and prompts are performing in production, and dig into specific examples
### Real-time monitoring
[Log](/docs/guides/logging), monitor, and take action on real-world interactions with robust and flexible monitoring
### Data management
[Manage](/docs/guides/datasets) and [review](/docs/guides/human-review) data to store and version
your test sets centrally
your test sets centrally
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