fix(proxy): return early instead of raising ValueError when standard_logging_payload is missing (#20851)

* fix: Preserved nullable object fields by carrying schema properties

* Fix: _convert_schema_types

* Fix all mypy issues

* Add alert about email notifications

* fixing tests

* extending timeout for long running tests

* Text changes

* [Feat] MCP Oauth2 Fixes - Add support for MCP M2M Oauth2 support (#20788)

* add has_client_credentials

* MCPOAuth2TokenCache

* init MCP Oauth2 constants

* MCPOAuth2TokenCache

* resolve_mcp_auth

* test fixes

* docs fix

* address greptile review: min TTL, env-configurable constants, tests, docs

- Fix zero-TTL edge case: floor at MCP_OAUTH2_TOKEN_CACHE_MIN_TTL (10s)
- Make all MCP OAuth2 constants env-configurable via os.getenv()
- Move test file to follow 1:1 mapping convention (test_oauth2_token_cache.py)
- Add MCP OAuth doc page (mcp_oauth.md) with M2M and PKCE sections
- Update FAQ in mcp.md to reflect M2M support
- Add E2E test script and config

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix mypy lint

* fix oauth2

* remove old files

* docs fix

* address greptile comments

* fix: atomic lock creation + validate JSON response shape

- Use dict.setdefault() for atomic per-server lock creation
- Add isinstance(body, dict) check before accessing token response fields

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: replace asserts with proper guards, wrap HTTP errors with context

- Replace `assert` statements with `if/raise ValueError` (asserts can be
  disabled with python -O in production)
- Wrap `httpx.HTTPStatusError` to provide a clear error message with
  server_id and status code
- Add tests for HTTP error and non-dict JSON response error paths
- Remove unused imports

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

* [UI] M2M OAuth2 UI Flow  (#20794)

* add has_client_credentials

* MCPOAuth2TokenCache

* init MCP Oauth2 constants

* MCPOAuth2TokenCache

* resolve_mcp_auth

* test fixes

* docs fix

* address greptile review: min TTL, env-configurable constants, tests, docs

- Fix zero-TTL edge case: floor at MCP_OAUTH2_TOKEN_CACHE_MIN_TTL (10s)
- Make all MCP OAuth2 constants env-configurable via os.getenv()
- Move test file to follow 1:1 mapping convention (test_oauth2_token_cache.py)
- Add MCP OAuth doc page (mcp_oauth.md) with M2M and PKCE sections
- Update FAQ in mcp.md to reflect M2M support
- Add E2E test script and config

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix mypy lint

* fix oauth2

* ui feat fixes

* test M2M

* test fix

* ui feats

* ui fixes

* ui fix client ID

* fix: backend endpoints

* docs fix

* fixes greptile

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

* [Fix] prevent shared backend model key from being polluted by per-deployment custom pricing (#20679)

* bug: custom price override for models

* added associated test

* fix(mcp): resolve OAuth2 root endpoints returning "MCP server not found" (#20784)

When MCP SDK hits root-level /register, /authorize, /token without
server name prefix, auto-resolve to the single configured OAuth2
server. Also fix WWW-Authenticate header to use correct public URL
behind reverse proxy.

* Add support for langchain_aws via litellm passthrough

* fix(proxy): return early instead of raising ValueError when standard_logging_payload is missing

The `_PROXY_VirtualKeyModelMaxBudgetLimiter.async_log_success_event` hook
raises `ValueError` when `standard_logging_payload` is `None`.  This breaks
non-standard call types (e.g. vLLM `/classify`) that do not populate the
payload, and the resulting exception disrupts downstream success callbacks
like Langfuse.

Return early with a debug log instead, matching the existing pattern used
for missing `user_api_key_model_max_budget`.

Fixes #18986

---------

Co-authored-by: Sameer Kankute <sameer@berri.ai>
Co-authored-by: yuneng-jiang <yuneng.jiang@gmail.com>
Co-authored-by: Ishaan Jaff <ishaanjaffer0324@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Shivam Rawat <161387515+shivamrawat1@users.noreply.github.com>
Co-authored-by: michelligabriele <gabriele.michelli@icloud.com>

litellm/proxy/hooks/model_max_budget_limiter.py

@@ -153,7 +153,10 @@ class _PROXY_VirtualKeyModelMaxBudgetLimiter(RouterBudgetLimiting):
             "standard_logging_object", None
         )
         if standard_logging_payload is None:
-            raise ValueError("standard_logging_payload is required")
+            verbose_proxy_logger.debug(
+                "Skipping _PROXY_VirtualKeyModelMaxBudgetLimiter.async_log_success_event: standard_logging_payload is None"
+            )
+            return
 
         _litellm_params: dict = kwargs.get("litellm_params", {}) or {}
         _metadata: dict = _litellm_params.get("metadata", {}) or {}