fetchOptions.dispatcher not working for undici v8.3.0 in openai-node SDK

What this error means

APIConnectionError: Connection error — fetchOptions.dispatcher (ProxyAgent from undici) silently ignored by openai-node SDK causing connection errors behind corporate proxies is a OpenAI API failure pattern reported for developers trying to fix openai-node sdk proxy support — dispatcher option not passed through to undici http client when using proxyagent. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

GitHub Issue #1886 (openai/openai-node), created 2026-05-18, 0 comments. Brand new issue. Enterprise developers behind proxies cannot use the OpenAI Node SDK despite passing fetchOptions.dispatcher. This affects all paid users on corporate networks. Category: OpenAI API.

Common causes

• GitHub Issue #1886 (openai/openai-node), created 2026-05-18, 0 comments. Brand new issue. Enterprise developers behind proxies cannot use the OpenAI Node SDK despite passing fetchOptions.dispatcher. This affects all paid users on corporate networks. Category: OpenAI API.

Quick fixes

1. Confirm the exact error signature matches APIConnectionError: Connection error — fetchOptions.dispatcher (ProxyAgent from undici) silently ignored by openai-node SDK causing connection errors behind corporate proxies.
2. Check the OpenAI API account, local tool state, and provider configuration involved in the failing workflow.
3. Reduce request pressure, check quota or plan limits, and retry with backoff instead of immediate repeated requests.

Platform/tool-specific checks

• Verify the command, editor, extension, or API client that produced the error.
• Compare local settings with CI, deployment, or editor-level settings when the error appears in only one environment.
• Avoid deleting credentials, local model data, or project settings until the failing scope is clear.

Step-by-step troubleshooting

1. Capture the exact error message and the command, editor action, or request that triggered it.
2. Check whether the failure is account/auth, quota/rate, model/provider, local runtime, or deployment configuration.
3. Review the source evidence below and compare it with your environment.
4. Apply one change at a time and rerun the smallest failing action.
5. Keep the working fix documented for the team or deployment environment.

How to prevent it

• Keep provider/tool configuration documented.
• Record non-secret diagnostics such as tool version, provider name, model name, and command path.
• Add a lightweight check before CI or production workflows depend on the tool.

Sources checked

• https://github.com/openai/openai-node/issues/1886

Evidence note: GitHub Issue #1886 (openai/openai-node), created 2026-05-18, 0 comments. Brand new issue. Enterprise developers behind proxies cannot use the OpenAI Node SDK despite passing fetchOptions.dispatcher. This affects all paid users on corporate networks. Category: OpenAI API.

Related errors

• OpenAI API

FAQ

What should I check first?

Start with the exact APIConnectionError: Connection error — fetchOptions.dispatcher (ProxyAgent from undici) silently ignored by openai-node SDK causing connection errors behind corporate proxies text and the smallest action that reproduces it.

Can I ignore this error?

No. Treat it as a failed OpenAI API workflow until the root cause is understood.

Is this guaranteed to have one fix?

No. The imported evidence supports the troubleshooting path above, but tool behavior can vary by account, plan, version, provider, and local configuration.

How do I know the fix worked?

Rerun the same command, editor action, or request. The fix is working when that action completes without APIConnectionError: Connection error — fetchOptions.dispatcher (ProxyAgent from undici) silently ignored by openai-node SDK causing connection errors behind corporate proxies.