Slash Command

/diagnose

Run a comprehensive diagnostic sweep for certificate and proxy issues

Install

Run in your terminal

npx claudepluginhub nathanvale/side-quest-marketplace --plugin node-cert

Details

Argumenthost

Command Content

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Last CommitMar 23, 2026

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Instructions

Run the diagnostic script at scripts/diagnose.sh which checks:

Environment variables - proxy settings, NODE_EXTRA_CA_CERTS

VPN/proxy client detection - GlobalProtect, Cisco, Zscaler, etc.

DNS resolution - Can we resolve the target host?

Direct TLS connection - What certificate does the proxy present?

TLS with CA file - Does our CA file fix the trust issue?

Proxy connectivity - Can we reach the proxy server?

HTTPS via proxy - Does curl work through the proxy?

Direct HTTPS - Does curl work without proxy?

Node.js TLS test - Can Node.js make HTTPS requests?

Summary - Quick overview of findings

After running, analyze the output and recommend fixes based on:

If SSL inspection is detected, ensure CA is extracted

If CA file missing, run /node-cert:extract-cert

If CA file exists but Node.js fails, check file validity

If proxy unreachable, check VPN connection

Example Output Analysis

== 4. Direct TLS to api.anthropic.com (no proxy) == [INFO] Certificate issuer: CN = YourCompany Forward Trust CA [INFO] SSL inspection DETECTED - corporate proxy is intercepting traffic [FAIL] TLS handshake failed: Verify return code: 21 (unable to verify)

This means:

SSL inspection is active (corporate CA in chain)

System doesn't trust the corporate CA

Need to extract and configure the corporate root CA

node-cert diagnose

Run a comprehensive diagnostic sweep for certificate and proxy issues.

Usage

/node-cert:diagnose [host]

Arguments

host - Target host to test against (default: api.anthropic.com)

Instructions

Run the diagnostic script at scripts/diagnose.sh which checks:

Environment variables - proxy settings, NODE_EXTRA_CA_CERTS
VPN/proxy client detection - GlobalProtect, Cisco, Zscaler, etc.
DNS resolution - Can we resolve the target host?
Direct TLS connection - What certificate does the proxy present?
TLS with CA file - Does our CA file fix the trust issue?
Proxy connectivity - Can we reach the proxy server?
HTTPS via proxy - Does curl work through the proxy?
Direct HTTPS - Does curl work without proxy?
Node.js TLS test - Can Node.js make HTTPS requests?
Summary - Quick overview of findings

After running, analyze the output and recommend fixes based on:

If SSL inspection is detected, ensure CA is extracted
If CA file missing, run /node-cert:extract-cert
If CA file exists but Node.js fails, check file validity
If proxy unreachable, check VPN connection

Example Output Analysis

== 4. Direct TLS to api.anthropic.com (no proxy) ==
  [INFO] Certificate issuer: CN = YourCompany Forward Trust CA
  [INFO] SSL inspection DETECTED - corporate proxy is intercepting traffic
  [FAIL] TLS handshake failed: Verify return code: 21 (unable to verify)

This means:

SSL inspection is active (corporate CA in chain)
System doesn't trust the corporate CA
Need to extract and configure the corporate root CA