Updated documentation to match Go implementation (source of truth).

Changes by Endpoint

POST /api/intake/llm-obs/v1/trace/spans

📄 Doc: content/en/llm_observability/instrumentation/api.md 🔧 Handler: httphandlerv1.TraceHandler.CreateSpans

Required Status Fixes (4)

• Removed [required] from data.type (optional in Go)
• Removed [required] from data.attributes (optional in Go)
• Removed [required] from meta.kind (optional in Go)
• Removed [required] from message.content (optional in Go)

Meta Object - Added Fields (8)

• span: object (span-level metadata)
• expected_output: IO (expected output information)
• tool_definitions: array (list of available tools)
• intent: string (span intent)
• embedding_for_prompt_idx: integer (embedding prompt index)
• model_name: string (model name)
• model_provider: string (model provider)
• model_version: string (model version)

IO Object - Added Fields (2)

• embedding: array of floats (embedding vector)
• parameters: object (additional parameters)

Message Object - Added Fields (2)

• tool_calls: array (tool calls made in message)
• tool_results: array (tool results in message)

New Type Definitions (3)

• ToolCall: name, arguments, tool_id, type
• ToolResult: name, result, tool_id, type
• ToolDefinition: name, description, schema

Document Object - Added Fields (2)

• ranking: integer (document ranking)
• metadata: object (additional metadata)

Prompt Object - Updated (3)

• Updated tags field type from Dict[string, string] to Dict[string, any]
• Added _dd_context_variable_keys: array (internal Datadog field)
• Added _dd_query_variable_keys: array (internal Datadog field)

Metrics Section - Restructured (1)

• Changed from fixed structure to flexible key-value map
• Documented as Dict[key (string), float] with common examples
• Allows custom metrics beyond standard fields

Span Object - Added Fields (4)

• service: string (service name)
• ml_app: string (can override payload-level ml_app)
• ml_app_version: string (ML app version)
• _dd: object (internal Datadog object with apm_trace_id)

POST /api/intake/llm-obs/v2/eval-metric

📄 Doc: content/en/llm_observability/instrumentation/api.md 🔧 Handler: httphandlerv1.EvalMetricHandlerV2.CreateEvalMetrics

Required Status Fixes (6)

• Removed [required] from data.type (optional in Go)
• Removed [required] from data.attributes (optional in Go)
• Added [required] to join_on.span.span_id (required in Go)
• Added [required] to join_on.span.trace_id (required in Go)
• Added [required] to join_on.tag.key (required in Go)
• Added [required] to join_on.tag.value (required in Go)

EvalMetric Object - Added Fields (4)

• trace_id: string (trace ID)
• span_id: string (span ID)
• ml_app_version: string (ML app version)
• metadata: object (additional metadata)

POST /api/v2/llm-obs/v1/spans/events/search

📄 Doc: content/en/llm_observability/evaluations/export_api.md 🔧 Handler: httphandlerv2.TraceHandler.SearchSpans

Required Status Fixes (2)

• Removed [required] from data.type (optional in Go)
• Removed [required] from data.attributes (optional in Go)

SearchSpansRequest - Added Fields (1)

• id: string (JSONAPI primary identifier)

Summary

Files Modified

Link Fixes

Fixed 2 broken internal hyperlinks:

• Line 519: Span → Span
• Line 520: Tag → Tag

🤖 Generated with Claude Code

What does this PR do? What is the motivation?

Merge instructions

Merge readiness:

• Ready for merge

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Additional notes