Properties
| Name | Type | Description |
|---|---|---|
| organizationId | string | Organization that owns this session. |
| projectId | string | Project this session belongs to. |
| sessionId | string | Session identifier set by the SDK. Groups the traces of one conversation. |
| traceCount | integer | Number of traces in the session. |
| traceIds | array | Identifiers of the traces that make up the session. |
| spanCount | integer | Total number of spans across the session's traces. |
| errorCount | integer | Number of spans flagged with an error status. |
| startTime | string | ISO-8601 timestamp of the session's earliest span. |
| endTime | string | ISO-8601 timestamp of the session's latest span. |
| lastActivityTime | string | ISO-8601 timestamp of the session's most recent span start. |
| durationNs | number | Active execution time of the session in nanoseconds, not wall-clock. |
| timeToFirstTokenNs | number | Nanoseconds from the start of the first LLM span to its first emitted token. `0` if not measured. |
| tokensInput | number | Total input tokens across the session's LLM spans. |
| tokensOutput | number | Total output tokens across the session's LLM spans. |
| tokensCacheRead | number | Total tokens served from the provider's prompt cache. |
| tokensCacheCreate | number | Total tokens written to the provider's prompt cache. |
| tokensReasoning | number | Total reasoning tokens reported by the model. |
| tokensTotal | number | Sum of all token counters. |
| costInputMicrocents | number | Cost of input tokens in microcents (100,000,000 per USD). |
| costOutputMicrocents | number | Cost of output tokens in microcents (100,000,000 per USD). |
| costTotalMicrocents | number | Total cost in microcents (100,000,000 per USD). |
| userId | stringnull | End-user identifier set by the SDK. `null` when absent. |
| userEmail | stringnull | End-user email set by the SDK. `null` when absent. |
| simulationId | stringnull | CUID of the simulation that produced this session. `null` when not a simulation. |
| tags | array | Free-form tags attached at ingest time. |
| metadata | object | Free-form metadata attached at ingest time. |
| models | array | Model identifiers seen across the session's LLM spans. |
| providers | array | LLM-provider identifiers seen across the session's spans. |
| serviceNames | array | OpenTelemetry `service.name` values seen in the session. |
| agentNames | array | Agent names seen across the session's spans. |
| definedTools | array | Tool names declared available across the session's spans. |
| rootSpanId | stringnull | Identifier of the session's root span. `null` when no root span has been ingested. |
| rootSpanName | stringnull | `name` attribute of the root span. `null` when no root span has been ingested. |
| latestTraceId | stringnull | Identifier of the trace that produced the session's latest output. `null` when no trace produced output. |
| conversation | array | Conversation of the session, in OpenTelemetry GenAI format: the system instructions, then the messages of the session's latest LLM completion, followed by its generated output. |
JSON Schema
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"$id": "https://raw.githubusercontent.com/api-evangelist/latitude-so/main/json-schema/latitude-so-session-detail-schema.json",
"title": "SessionDetail",
"x-generated": "2026-10-18",
"x-method": "derived",
"x-generator": "derive-json-schema.py",
"x-source": "openapi/latitude-so-openapi.json#/components/schemas/SessionDetail",
"type": "object",
"properties": {
"organizationId": {
"type": "string",
"description": "Organization that owns this session."
},
"projectId": {
"type": "string",
"description": "Project this session belongs to."
},
"sessionId": {
"type": "string",
"description": "Session identifier set by the SDK. Groups the traces of one conversation."
},
"traceCount": {
"type": "integer",
"minimum": 0,
"description": "Number of traces in the session."
},
"traceIds": {
"type": "array",
"items": {
"type": "string"
},
"description": "Identifiers of the traces that make up the session."
},
"spanCount": {
"type": "integer",
"minimum": 0,
"description": "Total number of spans across the session's traces."
},
"errorCount": {
"type": "integer",
"minimum": 0,
"description": "Number of spans flagged with an error status."
},
"startTime": {
"type": "string",
"description": "ISO-8601 timestamp of the session's earliest span."
},
"endTime": {
"type": "string",
"description": "ISO-8601 timestamp of the session's latest span."
},
"lastActivityTime": {
"type": "string",
"description": "ISO-8601 timestamp of the session's most recent span start."
},
"durationNs": {
"type": "number",
"description": "Active execution time of the session in nanoseconds, not wall-clock."
},
"timeToFirstTokenNs": {
"type": "number",
"description": "Nanoseconds from the start of the first LLM span to its first emitted token. `0` if not measured."
},
"tokensInput": {
"type": "number",
"description": "Total input tokens across the session's LLM spans."
},
"tokensOutput": {
"type": "number",
"description": "Total output tokens across the session's LLM spans."
},
"tokensCacheRead": {
"type": "number",
"description": "Total tokens served from the provider's prompt cache."
},
"tokensCacheCreate": {
"type": "number",
"description": "Total tokens written to the provider's prompt cache."
},
"tokensReasoning": {
"type": "number",
"description": "Total reasoning tokens reported by the model."
},
"tokensTotal": {
"type": "number",
"description": "Sum of all token counters."
},
"costInputMicrocents": {
"type": "number",
"description": "Cost of input tokens in microcents (100,000,000 per USD)."
},
"costOutputMicrocents": {
"type": "number",
"description": "Cost of output tokens in microcents (100,000,000 per USD)."
},
"costTotalMicrocents": {
"type": "number",
"description": "Total cost in microcents (100,000,000 per USD)."
},
"userId": {
"type": [
"string",
"null"
],
"description": "End-user identifier set by the SDK. `null` when absent."
},
"userEmail": {
"type": [
"string",
"null"
],
"description": "End-user email set by the SDK. `null` when absent."
},
"simulationId": {
"type": [
"string",
"null"
],
"description": "CUID of the simulation that produced this session. `null` when not a simulation."
},
"tags": {
"type": "array",
"items": {
"type": "string"
},
"description": "Free-form tags attached at ingest time."
},
"metadata": {
"type": "object",
"additionalProperties": {
"type": "string"
},
"description": "Free-form metadata attached at ingest time."
},
"models": {
"type": "array",
"items": {
"type": "string"
},
"description": "Model identifiers seen across the session's LLM spans."
},
"providers": {
"type": "array",
"items": {
"type": "string"
},
"description": "LLM-provider identifiers seen across the session's spans."
},
"serviceNames": {
"type": "array",
"items": {
"type": "string"
},
"description": "OpenTelemetry `service.name` values seen in the session."
},
"agentNames": {
"type": "array",
"items": {
"type": "string"
},
"description": "Agent names seen across the session's spans."
},
"definedTools": {
"type": "array",
"items": {
"type": "string"
},
"description": "Tool names declared available across the session's spans."
},
"rootSpanId": {
"type": [
"string",
"null"
],
"description": "Identifier of the session's root span. `null` when no root span has been ingested."
},
"rootSpanName": {
"type": [
"string",
"null"
],
"description": "`name` attribute of the root span. `null` when no root span has been ingested."
},
"latestTraceId": {
"type": [
"string",
"null"
],
"description": "Identifier of the trace that produced the session's latest output. `null` when no trace produced output."
},
"conversation": {
"type": "array",
"items": {
"$ref": "#/$defs/GenAIMessage"
},
"description": "Conversation of the session, in OpenTelemetry GenAI format: the system instructions, then the messages of the session's latest LLM completion, followed by its generated output."
}
},
"required": [
"organizationId",
"projectId",
"sessionId",
"traceCount",
"traceIds",
"spanCount",
"errorCount",
"startTime",
"endTime",
"lastActivityTime",
"durationNs",
"timeToFirstTokenNs",
"tokensInput",
"tokensOutput",
"tokensCacheRead",
"tokensCacheCreate",
"tokensReasoning",
"tokensTotal",
"costInputMicrocents",
"costOutputMicrocents",
"costTotalMicrocents",
"userId",
"userEmail",
"simulationId",
"tags",
"metadata",
"models",
"providers",
"serviceNames",
"agentNames",
"definedTools",
"rootSpanId",
"rootSpanName",
"latestTraceId",
"conversation"
],
"$defs": {
"GenAIMessage": {
"type": "object",
"additionalProperties": {
"nullable": true
},
"description": "Message in OpenTelemetry GenAI format (`role` + content parts + optional tool calls)."
}
}
}Work with this as data
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