* fix(mcp): follow tools/list pagination from upstream servers
Adopts BerriAI/litellm#32244 by Jupiter363 onto litellm_internal_staging
with merge conflicts resolved
* fix(mcp): degrade buggy pagination to partial results and bound the preview walk
A repeated nextCursor now returns the tools collected so far instead of
discarding every page with a RuntimeError, an empty-string cursor is treated
as terminal, load_mcp_tools shares the same pagination walk instead of
returning only the first page, and the tools/list preview is bounded by the
listing timeout instead of only the per-request timeout times the page cap
* fix(mcp): annotate deliberate rebind for the preview timeout scope
* fix(mcp): bound the shared pagination walk with an overall listing deadline
The per-request session read timeout restarts on every page, so direct SDK
callers of list_tools and load_mcp_tools could run up to the page cap with
no overall bound. The walk now returns the tools collected so far when
max(MCP_CLIENT_TIMEOUT, MCP_TOOL_LISTING_TIMEOUT) expires
* fix(mcp): let a per-server timeout extend the pagination deadline
MCPClient carries a per-server timeout that can exceed the global default;
list_tools now passes max(self.timeout, MCP_TOOL_LISTING_TIMEOUT) into the
shared walk so a deliberately slow server is not silently truncated at the
global deadline
* fix(mcp): honor per-server timeouts in the preview deadline and test the walk sessionless
The preview deadline now extends with the created client's own timeout, and
the pagination walk's cap, repeated-cursor, and empty-cursor cases are tested
directly against the helper instead of through patched SDK internals
* fix(mcp): forward the preview request's per-server timeout to the temporary server model
The tools preview built its temporary MCPServer without the request's
timeout field, so the client factory always fell back to the global
default and a per-server timeout could never extend the preview's
listing deadline (or its per-request timeout).
* test: drop the cwd-relative sys.path.insert calls from the test suite
TQ003 stands at 1,077 across 1,058 files, and 1,015 of them are the same shape:
sys.path.insert(0, os.path.abspath("../..")) and its deeper siblings. The
argument resolves against the working directory rather than the file, so from
the repo root, where every job runs pytest, it inserts the directory two levels
above the checkout. It has never pointed at litellm. The package is installed
into the environment anyway, which is what actually makes the import work, and
what the rule's message has said all along.
Removing them leaves 1,634 imports of sys and os with no remaining reference,
and those go too, except where another test module imports the name back out of
the file. The rest of TQ003 is 62 call sites that resolve against __file__ or a
variable, which are a different question and are left alone.
Collection is identical either way: 45,871 tests and the same 51 pre-existing
collection errors before and after, and ruff reports no new undefined name.
* test: drop the duplicate imports the sys.path sweep exposed to F811
* test(pre-call-utils): restore the os import the new bedrock tests need
- process_mcp_request() now falls back to OAuth2 passthrough when Authorization header contains a non-LiteLLM token (catches HTTPException and ProxyException 401/403)
- MCPClient._get_auth_headers() adds missing MCPAuth.oauth2 case
