> ## Documentation Index > Fetch the complete documentation index at: https://docs.blink.so/docs/llms.txt > Use this file to discover all available pages before exploring further. # Traces > View and analyze OpenTelemetry traces from your agents. View agent traces in the web UI under your agent's **Traces** tab. Traces Traces are collected using the OpenTelemetry (OTLP) protocol from agent containers. ## View Modes ### List View The default view shows spans in a flat list. Each span displays: * **Name** - The span operation name * **Status** - Success, error, or unset * **Duration** - How long the span took * **Start time** - When the span started Click any span to open a sidebar with full details including attributes and events. ### Tree View Click on a trace ID to see all spans in that trace as a hierarchical tree. This shows the parent-child relationships between spans and visualizes timing with a waterfall chart. ## Filtering * **Date range** - Select a time range (default: last 24 hours) * **Filters** - Add filters to match spans by any field. Click the filter button, enter a field name and value, and spans matching all filters will be shown. For example, to find all spans with errors, add a filter with field `span.status_code` and value `ERROR`. ## Span Details Click any span to view: * **Attributes** - Key-value metadata attached to the span * **Events** - Timestamped events within the span * **Logs** - Associated log entries (if `trace_id` matches) ## Storage Traces are stored in PostgreSQL. There is currently no automatic retention policy - traces are stored indefinitely. This is because Blink is in early access and automatic trace retention has not yet been implemented. To manually delete traces older than 7 days, run the following SQL query against your database: ```sql theme={null} DELETE FROM agent_trace WHERE start_time < NOW() - INTERVAL '7 days'; ```