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7a641e5172
* fix(anthropic): answer a 503 as 529 overloaded_error on /v1/messages
Anthropic's error contract has no 503, so a client built against it (Claude Code) treats a 503 from /v1/messages as a plain 5xx and retries it ten times instead of taking its overload path. A Bedrock 503 now leaves /v1/messages and /v1/messages/count_tokens as 529 overloaded_error, for both a JSON answer and a stream that fails before its first byte.
An Anthropic 529 overloaded_error now maps to litellm.ServiceUnavailableError (503) instead of InternalServerError (500), so OpenAI-shaped routes answer it as 503, the status OpenAI documents for an overloaded engine, and router retry and allowed-fails policies key it as ServiceUnavailableError.
* test(proxy): expect overloaded_error on a 503 stream error after a keepalive ping
* fix(proxy): record the 529 the Anthropic routes answer and type the chat stream error frame
The messages route stamps the answered status on the exception before post_call_failure_hook runs, so the spend log row, the OTel server span, the failed-request metric, and alerting record the 529 the client saw instead of the deployment's 503, while the deployment failure metric and cooldown keep the deployment's own status. A chat completions stream error frame names the type its status stands for instead of the null .type ServiceUnavailableError carries. An Anthropic-shaped 503 envelope passes through as 529 overloaded_error through a validated TypedDict, and count_tokens answers every ProxyException as the Anthropic envelope. Five integration tests that pinned 503 on the messages route now expect 529
* test(proxy): expect the top-level Anthropic envelope from count_tokens errors
count_tokens now answers a ProxyException as a JSONResponse carrying the
Anthropic error envelope instead of raising HTTPException, which FastAPI
wrapped in {"detail": ...}. The three legacy error-format tests now read
the response body and check that no detail wrap is left.
* test(proxy): cover the 529 overloaded_error answer across routes, cooldown, and retry budgets
* fix(anthropic): keep Anthropic overloads as InternalServerError and answer 529 from the provider status
An upstream Anthropic 529 stays litellm.InternalServerError (status 500) so
InternalServerErrorRetries, InternalServerErrorAllowedFails, SDK handlers,
and the OpenAI-shaped routes behave as on main. The error now carries
provider_status_code, and the /v1/messages routes answer 529
overloaded_error from it.
* refactor(proxy): unwrap a mid-stream fallback error once instead of recursing for the provider status
* fix(anthropic): keep count_tokens' detail body, end keepalive streams with an Anthropic error event, and log any 529 as an overload
* test(integration): cover the audit round 3 cells and expect 529 on the count_tokens 503 cases
* fix(proxy): re-raise an unchanged stream HTTPException as itself and walk nested mid-stream fallbacks for the provider status
* fix(proxy): walk nested mid-stream fallbacks without recursion
* fix(anthropic): preserve 503s and answer upstream 529s on messages routes
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(anthropic): answer an upstream Anthropic 529 as 529 on count_tokens
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(anthropic): use integration coverage for keepalive errors
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(proxy): answer an upstream overload with 503 server_is_overloaded on OpenAI routes
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(proxy): pass answered overload status to failure hooks
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* fix(proxy): preserve Anthropic route exception handling
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* refactor(proxy): bind the transformed failure without rebinding the parameter
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* test(proxy): observe the overload failure hook through a real ProxyLogging
Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---------
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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| .. | ||
| _experimental | ||
| a2a | ||
| agent_endpoints | ||
| analytics_endpoints | ||
| anthropic_endpoints | ||
| auth | ||
| batches_endpoints | ||
| client | ||
| common_utils | ||
| config_resolvers | ||
| container_endpoints | ||
| credential_endpoints | ||
| db | ||
| decisions_endpoints | ||
| deps | ||
| discovery_endpoints | ||
| enterprise_billing | ||
| example_config_yaml | ||
| fine_tuning_endpoints | ||
| google_endpoints | ||
| guardrails | ||
| health_endpoints | ||
| hooks | ||
| image_endpoints | ||
| lens | ||
| list_api | ||
| logging_endpoints | ||
| management | ||
| management_endpoints | ||
| management_helpers | ||
| mcp_server | ||
| memory | ||
| middleware | ||
| ocr_endpoints | ||
| openai_files_endpoint | ||
| pass_through_endpoints | ||
| policy_engine | ||
| prompts | ||
| proxy_server | ||
| public_endpoints | ||
| rag_endpoints | ||
| realtime_endpoints | ||
| rerank_endpoints | ||
| response_api_endpoints | ||
| response_polling | ||
| roi_calculator | ||
| search_endpoints | ||
| shutdown | ||
| spend_tracking | ||
| telemetry | ||
| test_configs | ||
| types_utils | ||
| ui_crud_endpoints | ||
| utils | ||
| vector_store_endpoints | ||
| vector_store_files_endpoints | ||
| video_endpoints | ||
| __init__.py | ||
| conftest.py | ||
| router_entry_point_stubs.py | ||
| test__lazy_features.py | ||
| test__types.py | ||
| test_admin_mcp.py | ||
| test_aiohttp_cleanup_closed.py | ||
| test_aiohttp_session_recovery.py | ||
| test_api_key_masking_in_errors.py | ||
| test_aproxy_startup.py | ||
| test_audio_speech_prometheus_hooks.py | ||
| test_batch_expiry.py | ||
| test_batch_metadata_none_fix.py | ||
| test_batch_retrieve_bedrock.py | ||
| test_batch_x_litellm_model_encoding.py | ||
| test_blocked_response_usage.py | ||
| test_body_snapshot_callback_params.py | ||
| test_budget_reservation.py | ||
| test_bug_report_config.py | ||
| test_caching_routes.py | ||
| test_chat_completion_metadata.py | ||
| test_claude_code_marketplace.py | ||
| test_collector.py | ||
| test_common_request_processing.py | ||
| test_component_allowlists.py | ||
| test_conftest.py | ||
| test_cors_config.py | ||
| test_credential_slot_registry.py | ||
| test_custom_callback_input.py | ||
| test_custom_logger_s3_gcs.py | ||
| test_custom_proxy.py | ||
| test_custom_tokenizer_bug.py | ||
| test_db_schema_changes.py | ||
| test_deprecated_key_grace_period.py | ||
| test_dev_reload.py | ||
| test_dynamic_mcp_route.py | ||
| test_empty_model_list.py | ||
| test_enforce_user_param.py | ||
| test_fallback_management_endpoints.py | ||
| test_fastapi_offline_routes.py | ||
| test_filter_models_by_team_access_group.py | ||
| test_get_favicon.py | ||
| test_get_image.py | ||
| test_health_check_functions.py | ||
| test_health_check_max_tokens.py | ||
| test_init_litellm_callbacks.py | ||
| test_langfuse_passthrough_security.py | ||
| test_lazy_openapi_snapshot.py | ||
| test_litellm_pre_call_utils.py | ||
| test_max_budget_env_var.py | ||
| test_mcp_asgi_response.py | ||
| test_model_based_routing_files_batches.py | ||
| test_model_deprecations_endpoint.py | ||
| test_model_dump_with_preserved_fields.py | ||
| test_model_id_header_propagation.py | ||
| test_model_info_default_limits.py | ||
| test_model_level_guardrails.py | ||
| test_model_list_aliases.py | ||
| test_model_list_callback_filter.py | ||
| test_model_list_discoverable.py | ||
| test_model_list_healthy_only.py | ||
| test_modify_response_streaming_passthrough.py | ||
| test_moyai_endpoints.py | ||
| test_native_compaction.py | ||
| test_openai_ws_passthrough_routes.py | ||
| test_openapi_schema_validation.py | ||
| test_plugin_routes.py | ||
| test_pointfive_dashboard_config.py | ||
| test_pointfive_ui_callback.py | ||
| test_pricing_field_strip.py | ||
| test_prisma_client_backoff_retry.py | ||
| test_prisma_engine_watchdog.py | ||
| test_prisma_migration.py | ||
| test_prometheus_cleanup.py | ||
| test_prometheus_metrics_server.py | ||
| test_prompt_test_endpoint.py | ||
| test_provider_url_destination_guard.py | ||
| test_proxy_cli.py | ||
| test_proxy_config_unit_test.py | ||
| test_proxy_custom_auth.py | ||
| test_proxy_logging_hook_detection.py | ||
| test_proxy_reject_logging.py | ||
| test_proxy_server.py | ||
| test_proxy_server_custom_logger.py | ||
| test_proxy_server_endpoints_and_startup.py | ||
| test_proxy_server_exception_mapping.py | ||
| test_proxy_setting_guardrails.py | ||
| test_proxy_token_counter.py | ||
| test_proxy_types.py | ||
| test_proxy_utils.py | ||
| test_proxy_utils_model_creation_and_error_logging.py | ||
| test_pyroscope.py | ||
| test_read_model_list.py | ||
| test_redis_auth_cache_flag.py | ||
| test_reducto_ocr_route.py | ||
| test_response_model_sanitization.py | ||
| test_response_polling_pre_call_checks.py | ||
| test_route_a2a_models.py | ||
| test_route_llm_request.py | ||
| test_route_priority.py | ||
| test_sensitive_route_auth.py | ||
| test_server_root_path.py | ||
| test_shared_health_check.py | ||
| test_spend_log_cleanup.py | ||
| test_swagger_chat_completions.py | ||
| test_team_member_update.py | ||
| test_team_org_move.py | ||
| test_tools_allowlist_enforcement.py | ||
| test_tracing_endpoints.py | ||
| test_ui_path_detection.py | ||
| test_unit_test_proxy_hooks.py | ||
| test_update_llm_router_resilience.py | ||
| test_update_spend.py | ||
| test_zero_cost_model_budget_bypass.py | ||
| test_zerobus_dashboard_config.py | ||
| vertex_key.json | ||