Anthropic API, Python SDK / Anthropic API

Anthropic Python SDK Streaming Drops Mid-Stream with RemoteProtocolError on Long Code Execution Runs

Fix Anthropic API streaming connection dropping during long-running code execution or skills runs Includes evidence for Anthropic API, Python SDK troubleshooting demand.

Source-backed Last updated May 15, 2026 1 source Needs local verification

Category: Anthropic API
Error signature: RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs
Quick fix: Compare the failing environment with a known working setup, then change one configuration value at a time.
Updated: May 15, 2026
Verification status: Source-backed
Evidence: 1 public source URL

Before you change production

This page includes public source URLs in the imported troubleshooting record. Compare those references with your version and environment before applying changes.

Reproduce the smallest failing action and save non-secret logs before changing configuration.
Check versions for Anthropic API, Python SDK, related SDKs, package managers, CI runners, and hosting providers.
Change one setting or dependency at a time, then rerun the same failing command or request.
Avoid destructive commands, credential rotation, billing changes, or security relaxations without a rollback plan.

What this error means

RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs is a Anthropic API, Python SDK failure pattern reported for developers trying to fix anthropic api streaming connection dropping during long-running code execution or skills runs. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Confirmed bug in anthropic-sdk-python: streaming /v1/messages endpoint drops connection mid-stream during extended code_execution + skills runs. No graceful error handling.

Common causes

Developers using Anthropic code execution features experience silent stream drops on long operations, losing partial results with no retry mechanism
Confirmed bug in anthropic-sdk-python: streaming /v1/messages endpoint drops connection mid-stream during extended code_execution + skills runs. No graceful error handling.

Quick fixes

Confirm the exact error signature matches RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs.
Check the Anthropic API, Python SDK account, local tool state, and provider configuration involved in the failing workflow.
Compare the failing environment with a known working setup, then change one configuration value at a time.

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

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

Diagnostic flow for this page

Match RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs exactly before applying the quick fix.
Compare the failing environment with Anthropic API, Python SDK versions, account scope, provider settings, and deployment context.
Check the listed common causes in order, starting with the cause that best matches your logs.
Use the evidence status below to decide whether to confirm against public sources or official documentation.
Apply one reversible change, rerun the smallest failing action, and keep rollback notes.

FAQ

What does RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs mean in Anthropic API, Python SDK?

RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs indicates the workflow described by "Anthropic Python SDK Streaming Drops Mid-Stream with RemoteProtocolError on Long Code Execution Runs" failed in a Anthropic API context. Start by confirming the exact signature and the component that emitted it.

What should I check first for RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs?

Check whether this cause matches your environment: Developers using Anthropic code execution features experience silent stream drops on long operations, losing partial results with no retry mechanism

Is the RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs guidance source-backed?

The "Anthropic Python SDK Streaming Drops Mid-Stream with RemoteProtocolError on Long Code Execution Runs" page is labeled source-backed. It has 1 public source URL from github.com, so use that evidence status when deciding how much additional verification you need.

When should I avoid the quick fix for RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs?

For "Anthropic Python SDK Streaming Drops Mid-Stream with RemoteProtocolError on Long Code Execution Runs", avoid applying "Compare the failing environment with a known working setup, then change one configuration value at a time." when the error text differs, the affected version or provider is different, or the change would touch credentials, billing, DNS, production deploy settings, or irreversible data.

What should I collect before debugging RemoteProtocolError: Stream dropped mid-request during long code_execution + skills runs?

For "Anthropic Python SDK Streaming Drops Mid-Stream with RemoteProtocolError on Long Code Execution Runs", collect the failing Anthropic API, Python SDK command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.