Vercel debug bundle

Vercel Debug Bundle

Overview

Collect a comprehensive debug bundle containing deployment state, function logs, environment configuration, and build output for Vercel support escalation or team troubleshooting.

Current State

!vercel --version 2>/dev/null || echo 'Vercel CLI not installed' !node --version 2>/dev/null || echo 'Node.js N/A'

Prerequisites

• Vercel CLI installed and authenticated
• Access to the affected deployment
• jq for JSON processing (recommended)

Instructions

Step 1: Collect Deployment Information

#!/usr/bin/env bash
set -euo pipefail

DEPLOY_URL="${1:-$(vercel ls --json 2>/dev/null | jq -r '.[0].url')}"
BUNDLE_DIR="vercel-debug-$(date +%Y%m%d-%H%M%S)"
mkdir -p "$BUNDLE_DIR"

echo "=== Collecting debug bundle for: $DEPLOY_URL ==="

# Deployment inspection
vercel inspect "$DEPLOY_URL" > "$BUNDLE_DIR/inspect.txt" 2>&1 || true

# Deployment details via API
curl -s -H "Authorization: Bearer $VERCEL_TOKEN" \
  "https://api.vercel.com/v13/deployments/$DEPLOY_URL" \
  | jq '{uid, name, state, target, readyState, errorMessage, meta, regions}' \
  > "$BUNDLE_DIR/deployment.json" 2>/dev/null || true

Step 2: Collect Function Logs

# Recent function logs (last 100 entries)
vercel logs "$DEPLOY_URL" --output=short --limit=100 \
  > "$BUNDLE_DIR/function-logs.txt" 2>&1 || true

# Function logs via API with filtering
curl -s -H "Authorization: Bearer $VERCEL_TOKEN" \
  "https://api.vercel.com/v2/deployments/$DEPLOY_URL/events?limit=100&direction=backward" \
  | jq '.[] | {timestamp: .created, type, text}' \
  > "$BUNDLE_DIR/events.json" 2>/dev/null || true

Step 3: Collect Build Output

# Build logs
curl -s -H "Authorization: Bearer $VERCEL_TOKEN" \
  "https://api.vercel.com/v13/deployments/$DEPLOY_URL" \
  | jq '.build' > "$BUNDLE_DIR/build-info.json" 2>/dev/null || true

# List all functions in the deployment
curl -s -H "Authorization: Bearer $VERCEL_TOKEN" \
  "https://api.vercel.com/v13/deployments/$DEPLOY_URL" \
  | jq '.routes, .functions' > "$BUNDLE_DIR/routes-functions.json" 2>/dev/null || true

Step 4: Collect Environment State (Redacted)

# Environment variable names only (no values)
vercel env ls > "$BUNDLE_DIR/env-vars-list.txt" 2>&1 || true

# Project configuration (redacted)
if [ -f "vercel.json" ]; then
  cp vercel.json "$BUNDLE_DIR/vercel.json"
fi

# Package versions
if [ -f "package.json" ]; then
  jq '{name, version, dependencies, devDependencies, engines}' package.json \
    > "$BUNDLE_DIR/package-summary.json" 2>/dev/null || true
fi

# Node.js and CLI versions
{
  echo "node: $(node --version 2>/dev/null || echo 'N/A')"
  echo "npm: $(npm --version 2>/dev/null || echo 'N/A')"
  echo "vercel: $(vercel --version 2>/dev/null || echo 'N/A')"
  echo "os: $(uname -a)"
  echo "date: $(date -u +%Y-%m-%dT%H:%M:%SZ)"
} > "$BUNDLE_DIR/environment.txt"

Step 5: Check Vercel Status Page

# Vercel platform status
curl -s "https://www.vercel-status.com/api/v2/summary.json" \
  | jq '{status: .status.description, components: [.components[] | {name, status}]}' \
  > "$BUNDLE_DIR/platform-status.json" 2>/dev/null || true

Step 6: Package the Bundle

# Create archive — excludes secrets
tar czf "${BUNDLE_DIR}.tar.gz" "$BUNDLE_DIR"
echo "Debug bundle created: ${BUNDLE_DIR}.tar.gz"
echo "Contents:"
ls -la "$BUNDLE_DIR"/

Bundle Contents Reference

File	Contents
inspect.txt	Deployment inspection output
deployment.json	Deployment state, target, errors
function-logs.txt	Recent function invocation logs
events.json	Deployment event timeline
build-info.json	Build configuration and output
routes-functions.json	Route and function mapping
env-vars-list.txt	Environment variable names (no values)
vercel.json	Project configuration
package-summary.json	Dependencies and versions
environment.txt	System info (Node, CLI, OS)
platform-status.json	Vercel platform status at time of capture

Support Ticket Template

Subject: [Project: my-app] FUNCTION_INVOCATION_TIMEOUT on /api/endpoint

Environment:
- Plan: Pro
- Framework: Next.js 14
- Region: iad1
- Node.js: 18.x

Issue:
[Describe the error, when it started, and the user impact]

Steps to Reproduce:
1. Deploy commit abc123
2. Send POST to /api/endpoint with body > 1MB
3. Function times out after 60s

Expected: 200 response within 5s
Actual: 504 after 60s

Deployment URL: https://my-app-xxx.vercel.app
Debug bundle: [attached]

Output

• vercel-debug-YYYYMMDD-HHMMSS.tar.gz archive
• All secrets redacted (env var values never captured)
• Platform status snapshot included
• Ready to attach to Vercel support ticket

Error Handling

Error	Cause	Solution
vercel inspect fails	Deployment deleted or token expired	Use API directly with curl
jq: command not found	jq not installed	apt install jq or brew install jq
Empty function logs	Function not invoked or log retention expired	Check Observability tab in dashboard
VERCEL_TOKEN not set	Not authenticated for API calls	Export token or run vercel login

Resources

• Vercel Support Portal
• Vercel Logs CLI
• Vercel Inspect CLI
• Vercel Status Page

Next Steps

For rate limit issues, see vercel-rate-limits.