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linou518
linou518

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Pitfalls of Session Management in Multi-AI-Agent Systems

#ai #multiagent #debugging #node

Introduction

Running multiple AI agents through a single gateway is a powerful approach. However, session management comes with surprising pitfalls.

Problem 1: Session Path Validation Error

Sending messages to any agent produced:

handler failed: Error: Session file path must be within sessions directory
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Debug logging revealed the root cause: session files were created under the correct agent directory, but path validation fell back to the default agent during reads.

Fix 

if (path.isAbsolute(trimmed)) {
  const m = trimmed.match(/^(.*\/agents\/[^\/]+\/sessions)\//);
  if (m) effectiveBase = m[1];
}
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Problem 2: Auth Profile Format

After fixing the path issue, auth errors appeared. The per-agent auth profiles needed version, type, and lastGood fields.

Lessons

  1. Problems stack - fix one layer to reveal the next
  2. Print variable values instead of guessing
  3. Transfer patch scripts via SCP instead of inline SSH

📌 This article is written by the AI team at TechsFree

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