Anthropic API / Anthropic API

Anthropic OverloadedError Not Mapped for Bedrock and Vertex Clients

Fix missing error type mapping so Bedrock/Vertex users get specific typed exceptions (413→RequestTooLargeError, 529→OverloadedError) matching canonical Anthropic client behavior Includes evidence for Anthropic API troubleshooting demand.

Source-backed Last updated May 23, 2026 1 source Needs local verification

Category: Anthropic API
Error signature: Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError
Quick fix: Reduce request pressure, check quota or plan limits, and retry with backoff instead of immediate repeated requests.
Updated: May 23, 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, 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

Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError is a Anthropic API failure pattern reported for developers trying to fix missing error type mapping so bedrock/vertex users get specific typed exceptions (413→requesttoolargeerror, 529→overloadederror) matching canonical anthropic client behavior. Based on the imported evidence, treat this as a tool-specific troubleshooting page rather than a generic API error.

Why this happens

Pull request anthropics/anthropic-sdk-python#1544 (May 14, 2026, still open). Canonical Anthropic SDK already handles 529 overloaded and 413 request-too-large errors, but Bedrock/Vertex path bypasses this. Enterprise users on AWS Bedrock and GCP Vertex AI receive generic errors without actionable retry logic. Maps to 'Anthropic API' category — affects paid Bedrock/Vertex usage pricing and requires proper error handling.

Common causes

Pull request anthropics/anthropic-sdk-python#1544 (May 14, 2026, still open). Canonical Anthropic SDK already handles 529 overloaded and 413 request-too-large errors, but Bedrock/Vertex path bypasses this. Enterprise users on AWS Bedrock and GCP Vertex AI receive generic errors without actionable retry logic. Maps to 'Anthropic API' category — affects paid Bedrock/Vertex usage pricing and requires proper error handling.

Quick fixes

Confirm the exact error signature matches Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError.
Check the Anthropic API account, local tool state, and provider configuration involved in the failing workflow.
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

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 Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError exactly before applying the quick fix.
Compare the failing environment with Anthropic API 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 Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError mean in Anthropic API?

Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError indicates the workflow described by "Anthropic OverloadedError Not Mapped for Bedrock and Vertex Clients" failed in a Anthropic API context. Start by confirming the exact signature and the component that emitted it.

What should I check first for Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError?

Check whether this cause matches your environment: Pull request anthropics/anthropic-sdk-python#1544 (May 14, 2026, still open). Canonical Anthropic SDK already handles 529 overloaded and 413 request-too-large errors, but Bedrock/Vertex path bypasses this. Enterprise users on AWS Bedrock and GCP Vertex AI receive generic errors without actionable retry logic. Maps to 'Anthropic API' category — affects paid Bedrock/Vertex usage pricing and requires proper error handling.

Is the Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError guidance source-backed?

The "Anthropic OverloadedError Not Mapped for Bedrock and Vertex Clients" 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 Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError?

For "Anthropic OverloadedError Not Mapped for Bedrock and Vertex Clients", avoid applying "Reduce request pressure, check quota or plan limits, and retry with backoff instead of immediate repeated requests." 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 Bedrock and Vertex client _make_status_error missing 413/529 status codes — returns generic APIStatusError instead of RequestTooLargeError / OverloadedError?

For "Anthropic OverloadedError Not Mapped for Bedrock and Vertex Clients", collect the failing Anthropic API command or request, non-secret configuration, versions, timestamps, request IDs when available, and the smallest reproduction that still triggers the signature.