Some fixes and changesets

Author: ericallam

.changeset/mcp-get-span-details.md

@@ -0,0 +1,11 @@
+---
+"@trigger.dev/core": patch
+"trigger.dev": patch
+---
+
+Add `get_span_details` MCP tool for inspecting individual spans within a run trace.
+
+- New `get_span_details` tool returns full span attributes, timing, events, and AI enrichment (model, tokens, cost, speed)
+- Span IDs now shown in `get_run_details` trace output for easy discovery
+- New API endpoint `GET /api/v1/runs/:runId/spans/:spanId`
+- New `retrieveSpan()` method on the API client

.server-changes/mcp-get-span-details.md

@@ -0,0 +1,6 @@
+---
+area: webapp
+type: feature
+---
+
+Add API endpoint `GET /api/v1/runs/:runId/spans/:spanId` that returns detailed span information including properties, events, AI enrichment (model, tokens, cost), and triggered child runs.

apps/webapp/app/routes/api.v1.runs.$runId.spans.$spanId.ts

@@ -54,7 +54,10 @@ export const loader = createLoaderApiRoute(
       return json({ error: "Span not found" }, { status: 404 });
     }
 
-    const durationMs = span.duration / 1_000_000;
+    // Postgres eventRepository returns duration in ms, ClickHouse returns nanoseconds
+    const isClickhouse =
+      run.taskEventStore === "clickhouse" || run.taskEventStore === "clickhouse_v2";
+    const durationMs = isClickhouse ? span.duration / 1_000_000 : span.duration;
 
     const aiData =
       span.properties && typeof span.properties === "object"
@@ -91,7 +94,6 @@ export const loader = createLoaderApiRoute(
         isCancelled: span.isCancelled,
         level: span.level,
         startTime: span.startTime,
-        duration: span.duration,
         durationMs,
         properties,
         events: span.events?.length ? span.events : undefined,

packages/core/src/v3/schemas/api.ts

@@ -1634,7 +1634,6 @@ export const RetrieveSpanDetailResponseBody = z.object({
   isCancelled: z.boolean(),
   level: z.string(),
   startTime: z.coerce.date(),
-  duration: z.number(),
   durationMs: z.number(),
   properties: z.record(z.any()).optional(),
   events: z.array(z.any()).optional(),