# Sentry Semantic Conventions > Semantic conventions for Sentry span attributes, operations, and measurements. Sentry Semantic Conventions define standardized attribute keys, span operation names, and measurements for observability data across all Sentry SDKs. ## Documentation - [All Attributes](/sentry-conventions/llms-full.txt): Complete list of all span and breadcrumb attributes in plain text - [Attributes Reference](/sentry-conventions/attributes/): Browse attributes grouped by category - [Span Names](/sentry-conventions/names/): How to construct span names using templates ## Optional - [GitHub Repository](https://github.com/getsentry/sentry-conventions): Source model files and schemas - [API: Attributes JSON](/sentry-conventions/api/attributes.json): Machine-readable JSON of all attributes