ipcheck

简体中文

Know whether Codex or Claude Code is slow, blocked, or using the wrong proxy before it breaks your coding flow.

ipcheck is a zero-dependency Bash CLI that tests the real service routes used by AI coding clients. It reports reachability, median/P95 time to first byte, jitter, capped proxy-path transfer samples, and a plain-language readiness score. No Codex or Claude login is required. It never reads API keys, sends prompts, or makes billable model requests.

Quick start

brew install jacklv-coder/tap/ipcheck
ipcheck

Already installed?

brew upgrade ipcheck

Install without Homebrew

mkdir -p "$HOME/.local/bin"
curl -fsSL https://raw.githubusercontent.com/jacklv-coder/ipcheck/v0.10.0/bin/ipcheck \
-o "$HOME/.local/bin/ipcheck"
chmod +x "$HOME/.local/bin/ipcheck"

Make sure $HOME/.local/bin is on PATH.

Why not just use Speedtest?

Tool	What it tells you
Speedtest	Peak bandwidth to a nearby test server
ping / curl	Basic reachability to one address
ipcheck	Codex/Claude routes, proxy path, TTFB, P95, jitter, failures, capped reference transfers, and coding readiness

For coding agents, a 500 Mbps connection can still feel slow when the first byte takes five seconds or the proxy route is unstable. ipcheck measures those interactive bottlenecks directly.

What makes it useful

• Tests each detected client separately, so one healthy route cannot hide a broken one.
• Understands OpenAI, Anthropic, LiteLLM-style gateways, and Alibaba Cloud Model Studio/DashScope Anthropic-compatible routes.
• Explains whether the main problem is reachability, TTFB, P95, jitter, or a low Cloudflare reference-transfer sample.
• Produces human, Markdown, and stable versioned JSON reports.
• Shows animated progress, adapts to narrow terminals, and exits cleanly with status 130 when cancelled with Ctrl+C.

Supported clients and routes

Client	Configuration detected	Route tested
Codex	$CODEX_HOME/config.toml, login mode, model, openai_base_url, custom provider	ChatGPT Codex or OpenAI /responses, matching the detected login when possible
Claude Code	settings.json, ANTHROPIC_BASE_URL, ANTHROPIC_MODEL	Configured ${ANTHROPIC_BASE_URL}/v1/messages
Custom	--endpoint, IPCHECK_ENDPOINTS	User-provided HTTP/HTTPS endpoint

Direct OpenAI/ChatGPT, Anthropic, and compatible gateway routes are auto-probed. Provider-native routes need an explicit credential-free endpoint: use CODEX_NETWORK_ENDPOINTS for Codex on Bedrock, or CLAUDE_NETWORK_ENDPOINTS for Claude Code provider-native protocols such as Bedrock, Vertex AI, Foundry, or Mantle. ipcheck warns instead of silently testing the wrong provider.

Common commands

Command	Purpose
ipcheck	Auto-detect installed clients and run the standard check
ipcheck --quick	One sample, shorter timeout, no reference transfer
ipcheck codex / ipcheck claude	Test only one client
ipcheck all	Test Codex and Claude Code together
ipcheck --explain-score	Show every score component
ipcheck --json	Emit structured output for automation
ipcheck --markdown	Create a shareable support report
ipcheck --system	Add macOS networkQuality measurements
ipcheck --no-bandwidth	Skip capped Cloudflare reference transfers

Run ipcheck --help for every option and environment variable.

Reading the result

Result	Meaning
GOOD	Reachable with comfortable first-byte latency and stability
FAIR	Usable, but delayed, intermittent, rate-limited, or temporarily unhealthy
POOR	Very slow, unstable, mostly unavailable, or using an invalid API route
BLOCKED	No service response, or the proxy rejected the request first
UNAVAILABLE	A provider-specific route was not measured without an explicit safe endpoint

HTTP 401 and 403 count as reachable because DNS, proxying, TLS, and HTTP reached the API route. HTTP 407 means the proxy blocked the request.

TTFB is measured from a credential-free protocol request. It reflects DNS, proxy, TLS, network, and gateway ingress—not authenticated model generation or time to the model's first token.

The Cloudflare samples describe small transfers from the current proxy/network path to Cloudflare. They are not peak-bandwidth tests and do not represent OpenAI, Anthropic, GitHub, or npm throughput.

The 0–100 score is a transparent rule, not a user percentile. AI interaction contributes 80 points and engineering transfer contributes 20. Repeated constrained transfer samples can also cap an otherwise high score. See Scoring and result rules for the exact calculation.

Claude Code gateway example

This configuration is auto-detected:

{
"env": {
"ANTHROPIC_AUTH_TOKEN": "YOUR_API_KEY",
"ANTHROPIC_BASE_URL": "https://dashscope.aliyuncs.com/apps/anthropic",
"ANTHROPIC_MODEL": "deepseek-v4-flash"
}
}

ipcheck claude safely probes the corresponding /v1/messages route without reading or sending ANTHROPIC_AUTH_TOKEN.

Privacy by design

• Authentication values never enter shell variables or temporary files.
• API keys, bearer tokens, cookies, and prompts are never sent to curl.
• Proxy credentials are redacted; unsafe endpoint URLs are rejected.
• Every curl invocation ignores user .curlrc files.
• Temporary metrics are removed on normal exit and cancellation.

See SECURITY.md for private vulnerability reporting.

Documentation

• Scoring and result rules
• Routes, proxies, and reference transfers
• Reports, automation, and exit codes
• Release history

Requirements

• macOS or Linux
• Bash 3.2+
• curl, awk, sed, sort
• Optional on macOS: networkQuality

Contributing

Issues and pull requests are welcome. Start with CONTRIBUTING.md and the Code of Conduct.

License

MIT