Decreased max log lines, made it a tool input property

Author: ericallam

packages/cli-v3/src/mcp/formatters.ts

@@ -5,7 +5,7 @@ import {
 } from "@trigger.dev/core/v3/schemas";
 import type { CursorPageResponse } from "@trigger.dev/core/v3/zodfetch";
 
-const MAX_TRACE_LINES = 1000;
+const DEFAULT_MAX_TRACE_LINES = 500;
 
 export function formatRun(run: RetrieveRunResponse): string {
   const lines: string[] = [];
@@ -172,17 +172,20 @@ function formatRelatedRuns(relatedRuns: RetrieveRunResponse["relatedRuns"]): str
   return parts.length > 0 ? `Related: ${parts.join("; ")}` : null;
 }
 
-export function formatRunTrace(trace: RetrieveRunTraceResponseBody["trace"]): string {
+export function formatRunTrace(
+  trace: RetrieveRunTraceResponseBody["trace"],
+  maxTraceLines: number = DEFAULT_MAX_TRACE_LINES
+): string {
   const lines: string[] = [];
 
   lines.push(`Trace ID: ${trace.traceId}`);
   lines.push("");
 
   // Format the root span and its children recursively
-  const reachedMaxLines = formatSpan(trace.rootSpan, lines, 0, MAX_TRACE_LINES);
+  const reachedMaxLines = formatSpan(trace.rootSpan, lines, 0, maxTraceLines);
 
   if (reachedMaxLines) {
-    lines.push(`(truncated logs to ${MAX_TRACE_LINES} lines)`);
+    lines.push(`(truncated logs to ${maxTraceLines} lines)`);
   }
 
   return lines.join("\n");

packages/cli-v3/src/mcp/schemas.ts

@@ -123,7 +123,13 @@ export const CommonRunsInput = CommonProjectsInput.extend({
 
 export type CommonRunsInput = z.output<typeof CommonRunsInput>;
 
-export const GetRunDetailsInput = CommonRunsInput.extend({});
+export const GetRunDetailsInput = CommonRunsInput.extend({
+  maxTraceLines: z
+    .number()
+    .int()
+    .describe("The maximum number of lines to show in the trace. Defaults to 500")
+    .optional(),
+});
 
 export type GetRunDetailsInput = z.output<typeof GetRunDetailsInput>;
 

packages/cli-v3/src/mcp/tools/runs.ts

@@ -35,7 +35,7 @@ export const getRunDetailsTool = {
     ]);
 
     const formattedRun = formatRun(runResult);
-    const formattedTrace = formatRunTrace(traceResult.trace);
+    const formattedTrace = formatRunTrace(traceResult.trace, input.maxTraceLines);
 
     const runUrl = await ctx.getDashboardUrl(`/projects/v3/${projectRef}/runs/${runResult.id}`);